/*
* tkText.c --
*
* This module provides a big chunk of the implementation of
* multi-line editable text widgets for Tk. Among other things,
* it provides the Tcl command interfaces to text widgets and
* the display code. The B-tree representation of text is
* implemented elsewhere.
*
* Copyright (c) 1992-1994 The Regents of the University of California.
* Copyright (c) 1994-1996 Sun Microsystems, Inc.
* Copyright (c) 1999 by Scriptics Corporation.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkText.c,v 1.33 2003/02/18 21:53:59 hobbs Exp $
*/
#define NO_COREXT
static char sccsid[] = "@(#) tkText.c 1.82 95/08/21 11:46:27";
#include "default.h"
#include "tkPort.h"
#include "tkInt.h"
#include "tkUndo.h"
#if defined(MAC_TCL) || defined(MAC_OSX_TK)
#define Style TkStyle
#define DInfo TkDInfo
#endif
#include "tkText.h"
/*
* Custom options for handling "-state"
*/
static Tk_CustomOption stateOption = {
TkStateParseProc,
TkStatePrintProc,
(ClientData) NULL /* only "normal" and "disabled" */
};
static Tk_CustomOption tileOption = {
Tk_TileParseProc,
Tk_TilePrintProc,
(ClientData) NULL
};
static Tk_CustomOption offsetOption = {
Tk_OffsetParseProc,
Tk_OffsetPrintProc,
(ClientData) NULL
};
/*
* Information used to parse text configuration options:
*/
static Tk_ConfigSpec configSpecs[] = {
{TK_CONFIG_BOOLEAN, "-autoseparators", "autoSeparators",
"AutoSeparators", DEF_TEXT_AUTO_SEPARATORS,
Tk_Offset(TkText, autoSeparators), 0},
{TK_CONFIG_BORDER, "-background", "background", "Background",
DEF_TEXT_BG_COLOR, Tk_Offset(TkText, border), TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_BORDER, "-background", "background", "Background",
DEF_TEXT_BG_MONO, Tk_Offset(TkText, border), TK_CONFIG_MONO_ONLY},
{TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
(char *) NULL, 0, 0},
{TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
(char *) NULL, 0, 0},
{TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
DEF_TEXT_BORDER_WIDTH, Tk_Offset(TkText, borderWidth), 0},
{TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
DEF_TEXT_CURSOR, Tk_Offset(TkText, cursor), TK_CONFIG_NULL_OK},
{TK_CONFIG_BOOLEAN, "-exportselection", "exportSelection",
"ExportSelection", DEF_TEXT_EXPORT_SELECTION,
Tk_Offset(TkText, exportSelection), 0},
{TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
(char *) NULL, 0, 0},
{TK_CONFIG_FONT, "-font", "font", "Font",
DEF_TEXT_FONT, Tk_Offset(TkText, tkfont), 0},
{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
DEF_TEXT_FG, Tk_Offset(TkText, fgColor), 0},
{TK_CONFIG_PIXELS, "-height", "height", "Height",
DEF_TEXT_HEIGHT, Tk_Offset(TkText, height), 0},
{TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
"HighlightBackground", DEF_TEXT_HIGHLIGHT_BG,
Tk_Offset(TkText, highlightBgColorPtr), 0},
{TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
DEF_TEXT_HIGHLIGHT, Tk_Offset(TkText, highlightColorPtr), 0},
{TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
"HighlightThickness",
DEF_TEXT_HIGHLIGHT_WIDTH, Tk_Offset(TkText, highlightWidth), 0},
{TK_CONFIG_BORDER, "-insertbackground", "insertBackground", "Foreground",
DEF_TEXT_INSERT_BG, Tk_Offset(TkText, insertBorder), 0},
{TK_CONFIG_PIXELS, "-insertborderwidth", "insertBorderWidth", "BorderWidth",
DEF_TEXT_INSERT_BD_COLOR, Tk_Offset(TkText, insertBorderWidth),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_PIXELS, "-insertborderwidth", "insertBorderWidth", "BorderWidth",
DEF_TEXT_INSERT_BD_MONO, Tk_Offset(TkText, insertBorderWidth),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_INT, "-insertofftime", "insertOffTime", "OffTime",
DEF_TEXT_INSERT_OFF_TIME, Tk_Offset(TkText, insertOffTime), 0},
{TK_CONFIG_INT, "-insertontime", "insertOnTime", "OnTime",
DEF_TEXT_INSERT_ON_TIME, Tk_Offset(TkText, insertOnTime), 0},
{TK_CONFIG_PIXELS, "-insertwidth", "insertWidth", "InsertWidth",
DEF_TEXT_INSERT_WIDTH, Tk_Offset(TkText, insertWidth), 0},
{TK_CONFIG_INT, "-maxundo", "maxUndo", "MaxUndo",
DEF_TEXT_MAX_UNDO, Tk_Offset(TkText, maxUndo), 0},
#ifdef NOT_YET
{TK_CONFIG_CUSTOM, "-offset", "offset", "Offset", "0 0",
Tk_Offset(TkText, tsoffset), TK_CONFIG_DONT_SET_DEFAULT,
&offsetOption},
#endif
{TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
DEF_TEXT_PADX, Tk_Offset(TkText, padX), 0},
{TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
DEF_TEXT_PADY, Tk_Offset(TkText, padY), 0},
{TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
DEF_TEXT_RELIEF, Tk_Offset(TkText, relief), 0},
{TK_CONFIG_BORDER, "-selectbackground", "selectBackground", "Foreground",
DEF_TEXT_SELECT_COLOR, Tk_Offset(TkText, selBorder),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_BORDER, "-selectbackground", "selectBackground", "Foreground",
DEF_TEXT_SELECT_MONO, Tk_Offset(TkText, selBorder),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_STRING, "-selectborderwidth", "selectBorderWidth", "BorderWidth",
DEF_TEXT_SELECT_BD_COLOR, Tk_Offset(TkText, selBdString),
TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
{TK_CONFIG_STRING, "-selectborderwidth", "selectBorderWidth", "BorderWidth",
DEF_TEXT_SELECT_BD_MONO, Tk_Offset(TkText, selBdString),
TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
{TK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
DEF_TEXT_SELECT_FG_COLOR, Tk_Offset(TkText, selFgColorPtr),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
DEF_TEXT_SELECT_FG_MONO, Tk_Offset(TkText, selFgColorPtr),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_BOOLEAN, "-setgrid", "setGrid", "SetGrid",
DEF_TEXT_SET_GRID, Tk_Offset(TkText, setGrid), 0},
{TK_CONFIG_PIXELS, "-spacing1", "spacing1", "Spacing",
DEF_TEXT_SPACING1, Tk_Offset(TkText, spacing1),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_PIXELS, "-spacing2", "spacing2", "Spacing",
DEF_TEXT_SPACING2, Tk_Offset(TkText, spacing2),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_PIXELS, "-spacing3", "spacing3", "Spacing",
DEF_TEXT_SPACING3, Tk_Offset(TkText, spacing3),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_CUSTOM, "-state", "state", "State",
DEF_TEXT_STATE, Tk_Offset(TkText, state), 0, &stateOption},
{TK_CONFIG_LANGARG, "-tabs", "tabs", "Tabs",
DEF_TEXT_TABS, Tk_Offset(TkText, tabOptionString), TK_CONFIG_NULL_OK},
{TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
DEF_TEXT_TAKE_FOCUS, Tk_Offset(TkText, takeFocus),
TK_CONFIG_NULL_OK},
{TK_CONFIG_BOOLEAN, "-undo", "undo", "Undo",
DEF_TEXT_UNDO, Tk_Offset(TkText, undo), 0},
{TK_CONFIG_INT, "-width", "width", "Width",
DEF_TEXT_WIDTH, Tk_Offset(TkText, width), 0},
{TK_CONFIG_CUSTOM, "-wrap", "wrap", "Wrap",
DEF_TEXT_WRAP, Tk_Offset(TkText, wrapMode), 0, &textWrapModeOption},
{TK_CONFIG_CALLBACK, "-xscrollcommand", "xScrollCommand", "ScrollCommand",
DEF_TEXT_XSCROLL_COMMAND, Tk_Offset(TkText, xScrollCmd),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CALLBACK, "-yscrollcommand", "yScrollCommand", "ScrollCommand",
DEF_TEXT_YSCROLL_COMMAND, Tk_Offset(TkText, yScrollCmd),
TK_CONFIG_NULL_OK},
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*
* Boolean variable indicating whether or not special debugging code
* should be executed.
*/
int tkTextDebug = 0;
/*
* Custom options for handling "-wrap":
*/
static int WrapModeParseProc _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, Tk_Window tkwin,
Tcl_Obj *value, char *widgRec, int offset));
static Tcl_Obj * WrapModePrintProc _ANSI_ARGS_((ClientData clientData,
Tk_Window tkwin, char *widgRec, int offset,
Tcl_FreeProc **freeProcPtr));
Tk_CustomOption textWrapModeOption = {
WrapModeParseProc,
WrapModePrintProc,
(ClientData) NULL
};
/*
*--------------------------------------------------------------
*
* WrapModeParseProc --
*
* This procedure is invoked during option processing to handle
* "-wrap" options for text widgets.
*
* Results:
* A standard Tcl return value.
*
* Side effects:
* The wrap mode for a given item gets replaced by the wrap mode
* indicated in the value argument.
*
*--------------------------------------------------------------
*/
static int
WrapModeParseProc(clientData, interp, tkwin, ovalue, widgRec, offset)
ClientData clientData; /* some flags.*/
Tcl_Interp *interp; /* Used for reporting errors. */
Tk_Window tkwin; /* Window containing canvas widget. */
Tcl_Obj *ovalue; /* Value of option (list of tag
* names). */
char *widgRec; /* Pointer to record for item. */
int offset; /* Offset into item. */
{
int c;
size_t length;
char *value = Tcl_GetString(ovalue);
register TkWrapMode *wrapPtr = (TkWrapMode *) (widgRec + offset);
if(value == NULL || *value == 0) {
*wrapPtr = TEXT_WRAPMODE_NULL;
return TCL_OK;
}
c = value[0];
length = strlen(value);
if ((c == 'c') && (strncmp(value, "char", length) == 0)) {
*wrapPtr = TEXT_WRAPMODE_CHAR;
return TCL_OK;
}
if ((c == 'n') && (strncmp(value, "none", length) == 0)) {
*wrapPtr = TEXT_WRAPMODE_NONE;
return TCL_OK;
}
if ((c == 'w') && (strncmp(value, "word", length) == 0)) {
*wrapPtr = TEXT_WRAPMODE_WORD;
return TCL_OK;
}
Tcl_AppendResult(interp, "bad wrap mode \"", value,
"\": must be char, none, or word",
(char *) NULL);
*wrapPtr = TEXT_WRAPMODE_CHAR;
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* WrapModePrintProc --
*
* This procedure is invoked by the Tk configuration code
* to produce a printable string for the "-wrap" configuration
* option for canvas items.
*
* Results:
* The return value is a string describing the state for
* the item referred to by "widgRec". In addition, *freeProcPtr
* is filled in with the address of a procedure to call to free
* the result string when it's no longer needed (or NULL to
* indicate that the string doesn't need to be freed).
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
static Tcl_Obj *
WrapModePrintProc(clientData, tkwin, widgRec, offset, freeProcPtr)
ClientData clientData; /* Ignored. */
Tk_Window tkwin; /* Window containing canvas widget. */
char *widgRec; /* Pointer to record for item. */
int offset; /* Ignored. */
Tcl_FreeProc **freeProcPtr; /* Pointer to variable to fill in with
* information about how to reclaim
* storage for return string. */
{
register TkWrapMode *wrapPtr = (TkWrapMode *) (widgRec + offset);
if (*wrapPtr==TEXT_WRAPMODE_CHAR) {
return LangStringArg("char");
} else if (*wrapPtr==TEXT_WRAPMODE_NONE) {
return LangStringArg("none");
} else if (*wrapPtr==TEXT_WRAPMODE_WORD) {
return LangStringArg("word");
} else {
return LangStringArg("");
}
}
/*
* Forward declarations for procedures defined later in this file:
*/
static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp,
TkText *textPtr, int argc, char **argv,
int flags));
static int DeleteChars _ANSI_ARGS_((TkText *textPtr,
CONST char *index1String, CONST char *index2String,
TkTextIndex *indexPtr1, TkTextIndex *indexPtr2));
static void DestroyText _ANSI_ARGS_((char *memPtr));
static void InsertChars _ANSI_ARGS_((TkText *textPtr,
TkTextIndex *indexPtr, CONST char *string));
static void TextBlinkProc _ANSI_ARGS_((ClientData clientData));
static void TextCmdDeletedProc _ANSI_ARGS_((
ClientData clientData));
static void TextEventProc _ANSI_ARGS_((ClientData clientData,
XEvent *eventPtr));
static int TextFetchSelection _ANSI_ARGS_((ClientData clientData,
int offset, char *buffer, int maxBytes));
static int TextIndexSortProc _ANSI_ARGS_((CONST VOID *first,
CONST VOID *second));
static int TextSearchCmd _ANSI_ARGS_((TkText *textPtr,
Tcl_Interp *interp, int argc, char **argv));
static int TextEditCmd _ANSI_ARGS_((TkText *textPtr,
Tcl_Interp *interp, int argc, char **argv));
static int TextWidgetCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static void TextWorldChanged _ANSI_ARGS_((
ClientData instanceData));
static int TextDumpCmd _ANSI_ARGS_((TkText *textPtr,
Tcl_Interp *interp, int argc, char **argv));
static void DumpLine _ANSI_ARGS_((Tcl_Interp *interp,
TkText *textPtr, int what, TkTextLine *linePtr,
int start, int end, int lineno,
LangCallback *command));
static int DumpSegment _ANSI_ARGS_((Tcl_Interp *interp, char *key,
char *value, Tcl_Obj *arg, LangCallback *command,
TkTextIndex *index, int what));
static int TextEditUndo _ANSI_ARGS_((TkText *textPtr));
static int TextEditRedo _ANSI_ARGS_((TkText *textPtr));
static void TextGetText _ANSI_ARGS_((TkTextIndex * index1,
TkTextIndex * index2, Tcl_DString *dsPtr));
static void updateDirtyFlag _ANSI_ARGS_((TkText *textPtr));
/*
* The structure below defines text class behavior by means of procedures
* that can be invoked from generic window code.
*/
static Tk_ClassProcs textClass = {
sizeof(Tk_ClassProcs), /* size */
TextWorldChanged, /* worldChangedProc */
};
/*
*--------------------------------------------------------------
*
* Tk_TextCmd --
*
* This procedure is invoked to process the "text" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
int
Tk_TextCmd(clientData, interp, argc, argv)
ClientData clientData; /* Main window associated with
* interpreter. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument strings. */
{
Tk_Window tkwin = (Tk_Window) clientData;
Tk_Window new;
register TkText *textPtr;
TkTextIndex startIndex;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " pathName ?options?\"", (char *) NULL);
return TCL_ERROR;
}
/*
* Create the window.
*/
new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
if (new == NULL) {
return TCL_ERROR;
}
/*
* Create the text widget and initialize everything to zero,
* then set the necessary initial (non-NULL) values.
*/
textPtr = (TkText *) ckalloc(sizeof(TkText));
memset((VOID *) textPtr, 0, sizeof(TkText));
textPtr->tkwin = new;
textPtr->display = Tk_Display(new);
textPtr->interp = interp;
textPtr->widgetCmd = Tcl_CreateCommand(interp,
Tk_PathName(textPtr->tkwin), TextWidgetCmd,
(ClientData) textPtr, TextCmdDeletedProc);
textPtr->tree = TkBTreeCreate(textPtr);
Tcl_InitHashTable(&textPtr->tagTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&textPtr->markTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&textPtr->windowTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&textPtr->imageTable, TCL_STRING_KEYS);
textPtr->state = TK_STATE_NORMAL;
textPtr->relief = TK_RELIEF_FLAT;
textPtr->cursor = None;
textPtr->charWidth = 1;
textPtr->wrapMode = TEXT_WRAPMODE_CHAR;
textPtr->prevWidth = Tk_Width(new);
textPtr->prevHeight = Tk_Height(new);
TkTextCreateDInfo(textPtr);
TkTextMakeByteIndex(textPtr->tree, 0, 0, &startIndex);
TkTextSetYView(textPtr, &startIndex, 0);
textPtr->exportSelection = 1;
textPtr->pickEvent.type = LeaveNotify;
textPtr->undoStack = TkUndoInitStack(interp,0);
textPtr->undo = 1;
textPtr->isDirtyIncrement = 1;
textPtr->autoSeparators = 1;
textPtr->lastEditMode = TK_TEXT_EDIT_OTHER;
/*
* Create the "sel" tag and the "current" and "insert" marks.
*/
textPtr->selTagPtr = TkTextCreateTag(textPtr, "sel");
textPtr->selTagPtr->reliefString =
(char *) ckalloc(sizeof(DEF_TEXT_SELECT_RELIEF));
strcpy(textPtr->selTagPtr->reliefString, DEF_TEXT_SELECT_RELIEF);
textPtr->selTagPtr->relief = TK_RELIEF_RAISED;
textPtr->currentMarkPtr = TkTextSetMark(textPtr, "current", &startIndex);
textPtr->insertMarkPtr = TkTextSetMark(textPtr, "insert", &startIndex);
Tk_SetClass(textPtr->tkwin, "Text");
Tk_SetClassProcs(textPtr->tkwin, &textClass, (ClientData) textPtr);
Tk_CreateEventHandler(textPtr->tkwin,
ExposureMask|StructureNotifyMask|FocusChangeMask,
TextEventProc, (ClientData) textPtr);
Tk_CreateEventHandler(textPtr->tkwin, KeyPressMask|KeyReleaseMask
|ButtonPressMask|ButtonReleaseMask|EnterWindowMask
|LeaveWindowMask|PointerMotionMask|VirtualEventMask,
TkTextBindProc, (ClientData) textPtr);
Tk_CreateSelHandler(textPtr->tkwin, XA_PRIMARY, XA_STRING,
TextFetchSelection, (ClientData) textPtr, XA_STRING);
if (ConfigureText(interp, textPtr, argc-2, argv+2, 0) != TCL_OK) {
Tk_DestroyWindow(textPtr->tkwin);
return TCL_ERROR;
}
Tcl_SetResult(interp, Tk_PathName(textPtr->tkwin), TCL_STATIC);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* TextWidgetCmd --
*
* This procedure is invoked to process the Tcl command
* that corresponds to a text widget. See the user
* documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
static int
TextWidgetCmd(clientData, interp, argc, argv)
ClientData clientData; /* Information about text widget. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
register TkText *textPtr = (TkText *) clientData;
int c, result = TCL_OK;
size_t length;
TkTextIndex index1, index2;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " option ?arg arg ...?\"", (char *) NULL);
return TCL_ERROR;
}
Tcl_Preserve((ClientData) textPtr);
c = argv[1][0];
length = strlen(argv[1]);
if ((c == 'b') && (strncmp(argv[1], "bbox", length) == 0)) {
int x, y, width, height;
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " bbox index\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (TkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (TkTextCharBbox(textPtr, &index1, &x, &y, &width, &height) == 0) {
Tcl_IntResults(interp,4,0, x, y, width, height);
}
} else if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
&& (length >= 2)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " cget option\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
result = Tk_ConfigureValue(interp, textPtr->tkwin, configSpecs,
(char *) textPtr, argv[2], 0);
} else if ((c == 'c') && (strncmp(argv[1], "compare", length) == 0)
&& (length >= 3)) {
int relation, value;
CONST char *p;
if (argc != 5) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " compare index1 op index2\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if ((TkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK)
|| (TkTextGetIndex(interp, textPtr, argv[4], &index2)
!= TCL_OK)) {
result = TCL_ERROR;
goto done;
}
relation = TkTextIndexCmp(&index1, &index2);
p = argv[3];
if (p[0] == '<') {
value = (relation < 0);
if ((p[1] == '=') && (p[2] == 0)) {
value = (relation <= 0);
} else if (p[1] != 0) {
compareError:
Tcl_AppendResult(interp, "bad comparison operator \"",
argv[3], "\": must be <, <=, ==, >=, >, or !=",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
} else if (p[0] == '>') {
value = (relation > 0);
if ((p[1] == '=') && (p[2] == 0)) {
value = (relation >= 0);
} else if (p[1] != 0) {
goto compareError;
}
} else if ((p[0] == '=') && (p[1] == '=') && (p[2] == 0)) {
value = (relation == 0);
} else if ((p[0] == '!') && (p[1] == '=') && (p[2] == 0)) {
value = (relation != 0);
} else {
goto compareError;
}
Tcl_SetResult(interp, ((value) ? "1" : "0"), TCL_STATIC);
} else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
&& (length >= 3)) {
if (argc == 2) {
result = Tk_ConfigureInfo(interp, textPtr->tkwin, configSpecs,
(char *) textPtr, (char *) NULL, 0);
} else if (argc == 3) {
result = Tk_ConfigureInfo(interp, textPtr->tkwin, configSpecs,
(char *) textPtr, argv[2], 0);
} else {
result = ConfigureText(interp, textPtr, argc-2, argv+2,
TK_CONFIG_ARGV_ONLY);
}
} else if ((c == 'd') && (strncmp(argv[1], "debug", length) == 0)
&& (length >= 3)) {
if (argc > 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " debug boolean\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (argc == 2) {
Tcl_SetResult(interp, ((tkBTreeDebug) ? "1" : "0"), TCL_STATIC);
} else {
if (Tcl_GetBooleanFromObj(interp, argv[2], &tkBTreeDebug) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
tkTextDebug = tkBTreeDebug;
}
} else if ((c == 'd') && (strncmp(argv[1], "delete", length) == 0)
&& (length >= 3)) {
int i;
if (argc < 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " delete index1 ?index2 ...?\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (textPtr->state == TK_STATE_NORMAL) {
if (argc < 5) {
/*
* Simple case requires no predetermination of indices.
*/
result = DeleteChars(textPtr, argv[2],
(argc == 4) ? argv[3] : NULL, NULL, NULL);
} else {
/*
* Multi-index pair case requires that we prevalidate the
* indices and sort from last to first so that deletes
* occur in the exact (unshifted) text. It also needs to
* handle partial and fully overlapping ranges. We have to
* do this with multiple passes.
*/
TkTextIndex *indices, *ixStart, *ixEnd, *lastStart;
char *useIdx;
argc -= 2;
argv += 2;
indices = (TkTextIndex *)
ckalloc((argc + 1) * sizeof(TkTextIndex));
/*
* First pass verifies that all indices are valid.
*/
for (i = 0; i < argc; i++) {
if (TkTextGetIndex(interp, textPtr, argv[i],
&indices[i]) != TCL_OK) {
result = TCL_ERROR;
ckfree((char *) indices);
goto done;
}
}
/*
* Pad out the pairs evenly to make later code easier.
*/
if (argc & 1) {
indices[i] = indices[i-1];
TkTextIndexForwChars(&indices[i], 1, &indices[i]);
argc++;
}
useIdx = (char *) ckalloc((unsigned) argc);
memset(useIdx, 0, (unsigned) argc);
/*
* Do a decreasing order sort so that we delete the end
* ranges first to maintain index consistency.
*/
qsort((VOID *) indices, (unsigned) (argc / 2),
2 * sizeof(TkTextIndex), TextIndexSortProc);
lastStart = NULL;
/*
* Second pass will handle bogus ranges (end < start) and
* overlapping ranges.
*/
for (i = 0; i < argc; i += 2) {
ixStart = &indices[i];
ixEnd = &indices[i+1];
if (TkTextIndexCmp(ixEnd, ixStart) <= 0) {
continue;
}
if (lastStart) {
if (TkTextIndexCmp(ixStart, lastStart) == 0) {
/*
* Start indices were equal, and the sort placed
* the longest range first, so skip this one.
*/
continue;
} else if (TkTextIndexCmp(lastStart, ixEnd) < 0) {
/*
* The next pair has a start range before the end
* point of the last range. Constrain the delete
* range, but use the pointer values.
*/
*ixEnd = *lastStart;
if (TkTextIndexCmp(ixEnd, ixStart) <= 0) {
continue;
}
}
}
lastStart = ixStart;
useIdx[i] = 1;
}
/*
* Final pass take the input from the previous and deletes
* the ranges which are flagged to be deleted.
*/
for (i = 0; i < argc; i += 2) {
if (useIdx[i]) {
/*
* We don't need to check the return value because all
* indices are preparsed above.
*/
DeleteChars(textPtr, NULL, NULL,
&indices[i], &indices[i+1]);
}
}
ckfree((char *) indices);
}
}
} else if ((c == 'd') && (strncmp(argv[1], "dlineinfo", length) == 0)
&& (length >= 2)) {
int x, y, width, height, base;
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " dlineinfo index\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (TkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (TkTextDLineInfo(textPtr, &index1, &x, &y, &width, &height, &base)
== 0) {
char buf[TCL_INTEGER_SPACE * 5];
Tcl_Obj *el;
el = Tcl_GetObjResult(interp);
Tcl_ListObjAppendElement(interp,el,Tcl_NewIntObj(x));
Tcl_ListObjAppendElement(interp,el,Tcl_NewIntObj(y));
Tcl_ListObjAppendElement(interp,el,Tcl_NewIntObj(width));
Tcl_ListObjAppendElement(interp,el,Tcl_NewIntObj(height));
Tcl_ListObjAppendElement(interp,el,Tcl_NewIntObj(base));
/*
sprintf(buf, "%d %d %d %d %d", x, y, width, height, base);
Tcl_SetResult(interp, buf, TCL_VOLATILE);
*/
}
} else if ((c == 'e') && (strncmp(argv[1], "edit", length) == 0)) {
result = TextEditCmd(textPtr, interp, argc, argv);
} else if ((c == 'g') && (strncmp(argv[1], "get", length) == 0)) {
Tcl_Obj *objPtr = NULL;
Tcl_DString ds;
int i, found = 0;
if (argc < 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " get index1 ?index2 ...?\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
for (i = 2; i < argc; i += 2) {
if (TkTextGetIndex(interp, textPtr, argv[i], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (i+1 == argc) {
index2 = index1;
TkTextIndexForwChars(&index2, 1, &index2);
} else if (TkTextGetIndex(interp, textPtr, argv[i+1], &index2)
!= TCL_OK) {
if (objPtr) {
Tcl_DecrRefCount(objPtr);
}
result = TCL_ERROR;
goto done;
}
/* Using <= gives perl/Tk null strings for equal case and undef
for reversed range - which seems "correct"
*/
if (TkTextIndexCmp(&index1, &index2) <= 0) {
/*
* Place the text in a DString and move it to the result.
* Since this could in principle be a megabyte or more, we
* want to do it efficiently!
*/
TextGetText(&index1, &index2, &ds);
found++;
if (found == 1) {
Tcl_DStringResult(interp, &ds);
} else {
if (found == 2) {
/*
* Move the first item we put into the result into
* the first element of the list object.
*/
objPtr = Tcl_NewObj();
#ifdef _LANG
Tcl_IncrRefCount(Tcl_GetObjResult(interp));
#endif
Tcl_ListObjAppendElement(NULL, objPtr,
Tcl_GetObjResult(interp));
}
Tcl_ListObjAppendElement(NULL, objPtr,
Tcl_NewStringObj(Tcl_DStringValue(&ds),
Tcl_DStringLength(&ds)));
}
Tcl_DStringFree(&ds);
}
}
if (found > 1) {
Tcl_SetObjResult(interp, objPtr);
}
} else if ((c == 'i') && (strncmp(argv[1], "index", length) == 0)
&& (length >= 3)) {
char buf[200];
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " index index\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
if (TkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
TkTextPrintIndex(&index1, buf);
Tcl_SetResult(interp, buf, TCL_VOLATILE);
} else if ((c == 'i') && (strncmp(argv[1], "insert", length) == 0)
&& (length >= 3)) {
int i, j, numTags;
Tcl_Obj * *tagNames;
TkTextTag **oldTagArrayPtr;
if (argc < 4) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0],
" insert index chars ?tagList chars tagList ...?\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
if (TkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (textPtr->state == TK_STATE_NORMAL) {
for (j = 3; j < argc; j += 2) {
InsertChars(textPtr, &index1, argv[j]);
if (argc > (j+1)) {
TkTextIndexForwBytes(&index1, (int) strlen(argv[j]),
&index2);
oldTagArrayPtr = TkBTreeGetTags(&index1, &numTags);
if (oldTagArrayPtr != NULL) {
for (i = 0; i < numTags; i++) {
TkBTreeTag(&index1, &index2, oldTagArrayPtr[i], 0);
}
ckfree((char *) oldTagArrayPtr);
}
if (Tcl_ListObjGetElements(interp, objv[j+1], &numTags, &tagNames)
!= TCL_OK) {
result = TCL_ERROR;
goto done;
}
for (i = 0; i < numTags; i++) {
TkBTreeTag(&index1, &index2,
TkTextCreateTag(textPtr, Tcl_GetString(tagNames[i])), 1);
}
index1 = index2;
}
}
}
} else if ((c == 'd') && (strncmp(argv[1], "dump", length) == 0)) {
result = TextDumpCmd(textPtr, interp, argc, argv);
} else if ((c == 'i') && (strncmp(argv[1], "image", length) == 0)) {
result = TkTextImageCmd(textPtr, interp, argc, objv);
} else if ((c == 'm') && (strncmp(argv[1], "mark", length) == 0)) {
result = TkTextMarkCmd(textPtr, interp, argc, argv);
} else if ((c == 's') && (strcmp(argv[1], "scan") == 0) && (length >= 2)) {
result = TkTextScanCmd(textPtr, interp, argc, argv);
} else if ((c == 's') && (strcmp(argv[1], "search") == 0)
&& (length >= 3)) {
result = TextSearchCmd(textPtr, interp, argc, argv);
} else if ((c == 's') && (strcmp(argv[1], "see") == 0) && (length >= 3)) {
result = TkTextSeeCmd(textPtr, interp, argc, argv);
} else if ((c == 't') && (strcmp(argv[1], "tag") == 0)) {
result = TkTextTagCmd(textPtr, interp, argc, argv);
} else if ((c == 'w') && (strncmp(argv[1], "window", length) == 0)) {
result = TkTextWindowCmd(textPtr, interp, argc, argv);
} else if ((c == 'x') && (strncmp(argv[1], "xview", length) == 0)) {
result = TkTextXviewCmd(textPtr, interp, argc, argv);
} else if ((c == 'y') && (strncmp(argv[1], "yview", length) == 0)
&& (length >= 2)) {
result = TkTextYviewCmd(textPtr, interp, argc, argv);
} else {
Tcl_AppendResult(interp, "bad option \"", argv[1],
"\": must be bbox, cget, compare, configure, debug, delete, ",
"dlineinfo, dump, edit, get, image, index, insert, mark, ",
"scan, search, see, tag, window, xview, or yview",
(char *) NULL);
result = TCL_ERROR;
}
done:
Tcl_Release((ClientData) textPtr);
return result;
}
/*
*----------------------------------------------------------------------
*
* TextIndexSortProc --
*
* This procedure is called by qsort when sorting an array of
* indices in *decreasing* order (last to first).
*
* Results:
* The return value is -1 if the first argument should be before
* the second element, 0 if it's equivalent, and 1 if it should be
* after the second element.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
TextIndexSortProc(first, second)
CONST VOID *first, *second; /* Elements to be compared. */
{
TkTextIndex *pair1 = (TkTextIndex *) first;
TkTextIndex *pair2 = (TkTextIndex *) second;
int cmp = TkTextIndexCmp(&pair1[1], &pair2[1]);
if (cmp == 0) {
/*
* If the first indices were equal, we want the second index of the
* pair also to be the greater. Use pointer magic to access the
* second index pair.
*/
cmp = TkTextIndexCmp(&pair1[0], &pair2[0]);
}
if (cmp > 0) {
return -1;
} else if (cmp < 0) {
return 1;
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* DestroyText --
*
* This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
* to clean up the internal structure of a text at a safe time
* (when no-one is using it anymore).
*
* Results:
* None.
*
* Side effects:
* Everything associated with the text is freed up.
*
*----------------------------------------------------------------------
*/
static void
DestroyText(memPtr)
char *memPtr; /* Info about text widget. */
{
register TkText *textPtr = (TkText *) memPtr;
Tcl_HashSearch search;
Tcl_HashEntry *hPtr;
TkTextTag *tagPtr;
/*
* Free up all the stuff that requires special handling, then
* let Tk_FreeOptions handle all the standard option-related
* stuff. Special note: free up display-related information
* before deleting the B-tree, since display-related stuff
* may refer to stuff in the B-tree.
*/
TkTextFreeDInfo(textPtr);
TkBTreeDestroy(textPtr->tree);
for (hPtr = Tcl_FirstHashEntry(&textPtr->tagTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
tagPtr = (TkTextTag *) Tcl_GetHashValue(hPtr);
TkTextFreeTag(textPtr, tagPtr);
}
Tcl_DeleteHashTable(&textPtr->tagTable);
for (hPtr = Tcl_FirstHashEntry(&textPtr->markTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
ckfree((char *) Tcl_GetHashValue(hPtr));
}
Tcl_DeleteHashTable(&textPtr->markTable);
if (textPtr->tabArrayPtr != NULL) {
ckfree((char *) textPtr->tabArrayPtr);
}
if (textPtr->insertBlinkHandler != NULL) {
Tcl_DeleteTimerHandler(textPtr->insertBlinkHandler);
}
if (textPtr->bindingTable != NULL) {
Tk_DeleteBindingTable(textPtr->bindingTable);
}
TkUndoFreeStack(textPtr->undoStack);
/*
* NOTE: do NOT free up selBorder, selBdString, or selFgColorPtr:
* they are duplicates of information in the "sel" tag, which was
* freed up as part of deleting the tags above.
*/
textPtr->selBorder = NULL;
textPtr->selBdString = NULL;
textPtr->selFgColorPtr = NULL;
Tk_FreeOptions(configSpecs, (char *) textPtr, textPtr->display, 0);
ckfree((char *) textPtr);
}
/*
*----------------------------------------------------------------------
*
* ConfigureText --
*
* This procedure is called to process an argv/argc list, plus
* the Tk option database, in order to configure (or
* reconfigure) a text widget.
*
* Results:
* The return value is a standard Tcl result. If TCL_ERROR is
* returned, then the interp's result contains an error message.
*
* Side effects:
* Configuration information, such as text string, colors, font,
* etc. get set for textPtr; old resources get freed, if there
* were any.
*
*----------------------------------------------------------------------
*/
static int
ConfigureText(interp, textPtr, argc, argv, flags)
Tcl_Interp *interp; /* Used for error reporting. */
register TkText *textPtr; /* Information about widget; may or may
* not already have values for some fields. */
int argc; /* Number of valid entries in argv. */
char **argv; /* Arguments. */
int flags; /* Flags to pass to Tk_ConfigureWidget. */
{
int oldExport = textPtr->exportSelection;
if (Tk_ConfigureWidget(interp, textPtr->tkwin, configSpecs,
argc, argv, (char *) textPtr, flags) != TCL_OK) {
return TCL_ERROR;
}
TkUndoSetDepth(textPtr->undoStack, textPtr->maxUndo);
/*
* A few other options also need special processing, such as parsing
* the geometry and setting the background from a 3-D border.
*/
Tk_SetBackgroundFromBorder(textPtr->tkwin, textPtr->border);
/*
* Don't allow negative spacings.
*/
if (textPtr->spacing1 < 0) {
textPtr->spacing1 = 0;
}
if (textPtr->spacing2 < 0) {
textPtr->spacing2 = 0;
}
if (textPtr->spacing3 < 0) {
textPtr->spacing3 = 0;
}
/*
* Parse tab stops.
*/
if (textPtr->tabArrayPtr != NULL) {
ckfree((char *) textPtr->tabArrayPtr);
textPtr->tabArrayPtr = NULL;
}
if (textPtr->tabOptionString != NULL) {
textPtr->tabArrayPtr = TkTextGetTabs(interp, textPtr->tkwin,
textPtr->tabOptionString);
if (textPtr->tabArrayPtr == NULL) {
Tcl_AddErrorInfo(interp,"\n (while processing -tabs option)");
return TCL_ERROR;
}
}
/*
* Make sure that configuration options are properly mirrored
* between the widget record and the "sel" tags. NOTE: we don't
* have to free up information during the mirroring; old
* information was freed when it was replaced in the widget
* record.
*/
textPtr->selTagPtr->border = textPtr->selBorder;
if (textPtr->selTagPtr->bdString != textPtr->selBdString) {
textPtr->selTagPtr->bdString = textPtr->selBdString;
if (textPtr->selBdString != NULL) {
if (Tk_GetPixels(interp, textPtr->tkwin, textPtr->selBdString,
&textPtr->selTagPtr->borderWidth) != TCL_OK) {
return TCL_ERROR;
}
if (textPtr->selTagPtr->borderWidth < 0) {
textPtr->selTagPtr->borderWidth = 0;
}
}
}
textPtr->selTagPtr->fgColor = textPtr->selFgColorPtr;
textPtr->selTagPtr->affectsDisplay = 0;
if ((textPtr->selTagPtr->border != NULL)
|| (textPtr->selTagPtr->bdString != NULL)
|| (textPtr->selTagPtr->reliefString != NULL)
|| (textPtr->selTagPtr->bgStipple != None)
|| (textPtr->selTagPtr->fgColor != NULL)
|| (textPtr->selTagPtr->tkfont != None)
|| (textPtr->selTagPtr->fgStipple != None)
|| (textPtr->selTagPtr->justifyString != NULL)
|| (textPtr->selTagPtr->lMargin1String != NULL)
|| (textPtr->selTagPtr->lMargin2String != NULL)
|| (textPtr->selTagPtr->offsetString != NULL)
|| (textPtr->selTagPtr->overstrikeString != NULL)
|| (textPtr->selTagPtr->rMarginString != NULL)
|| (textPtr->selTagPtr->spacing1String != NULL)
|| (textPtr->selTagPtr->spacing2String != NULL)
|| (textPtr->selTagPtr->spacing3String != NULL)
|| (textPtr->selTagPtr->tabString != NULL)
|| (textPtr->selTagPtr->underlineString != NULL)
|| (textPtr->selTagPtr->elideString != NULL)
|| (textPtr->selTagPtr->wrapMode != TEXT_WRAPMODE_NULL)) {
textPtr->selTagPtr->affectsDisplay = 1;
}
TkTextRedrawTag(textPtr, (TkTextIndex *) NULL, (TkTextIndex *) NULL,
textPtr->selTagPtr, 1);
/*
* Claim the selection if we've suddenly started exporting it and there
* are tagged characters.
*/
if (textPtr->exportSelection && (!oldExport)) {
TkTextSearch search;
TkTextIndex first, last;
TkTextMakeByteIndex(textPtr->tree, 0, 0, &first);
TkTextMakeByteIndex(textPtr->tree,
TkBTreeNumLines(textPtr->tree), 0, &last);
TkBTreeStartSearch(&first, &last, textPtr->selTagPtr, &search);
if (TkBTreeCharTagged(&first, textPtr->selTagPtr)
|| TkBTreeNextTag(&search)) {
Tk_OwnSelection(textPtr->tkwin, XA_PRIMARY, TkTextLostSelection,
(ClientData) textPtr);
textPtr->flags |= GOT_SELECTION;
}
}
/*
* Account for state changes that would reenable blinking cursor state.
*/
if (textPtr->flags & GOT_FOCUS) {
Tcl_DeleteTimerHandler(textPtr->insertBlinkHandler);
textPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
TextBlinkProc((ClientData) textPtr);
}
/*
* Register the desired geometry for the window, and arrange for
* the window to be redisplayed.
*/
if (textPtr->width <= 0) {
textPtr->width = 1;
}
if (textPtr->height <= 0) {
textPtr->height = 1;
}
TextWorldChanged((ClientData) textPtr);
return TCL_OK;
}
/*
*---------------------------------------------------------------------------
*
* TextWorldChanged --
*
* This procedure is called when the world has changed in some
* way and the widget needs to recompute all its graphics contexts
* and determine its new geometry.
*
* Results:
* None.
*
* Side effects:
* Configures all tags in the Text with a empty argc/argv, for
* the side effect of causing all the items to recompute their
* geometry and to be redisplayed.
*
*---------------------------------------------------------------------------
*/
static void
TextWorldChanged(instanceData)
ClientData instanceData; /* Information about widget. */
{
TkText *textPtr;
Tk_FontMetrics fm;
textPtr = (TkText *) instanceData;
textPtr->charWidth = Tk_TextWidth(textPtr->tkfont, "0", 1);
if (textPtr->charWidth <= 0) {
textPtr->charWidth = 1;
}
Tk_GetFontMetrics(textPtr->tkfont, &fm);
Tk_GeometryRequest(textPtr->tkwin,
textPtr->width * textPtr->charWidth + 2*textPtr->borderWidth
+ 2*textPtr->padX + 2*textPtr->highlightWidth,
textPtr->height * (fm.linespace + textPtr->spacing1
+ textPtr->spacing3) + 2*textPtr->borderWidth
+ 2*textPtr->padY + 2*textPtr->highlightWidth);
Tk_SetInternalBorder(textPtr->tkwin,
textPtr->borderWidth + textPtr->highlightWidth);
if (textPtr->setGrid) {
Tk_SetGrid(textPtr->tkwin, textPtr->width, textPtr->height,
textPtr->charWidth, fm.linespace);
} else {
Tk_UnsetGrid(textPtr->tkwin);
}
TkTextRelayoutWindow(textPtr);
}
/*
*--------------------------------------------------------------
*
* TextEventProc --
*
* This procedure is invoked by the Tk dispatcher on
* structure changes to a text. For texts with 3D
* borders, this procedure is also invoked for exposures.
*
* Results:
* None.
*
* Side effects:
* When the window gets deleted, internal structures get
* cleaned up. When it gets exposed, it is redisplayed.
*
*--------------------------------------------------------------
*/
static void
TextEventProc(clientData, eventPtr)
ClientData clientData; /* Information about window. */
register XEvent *eventPtr; /* Information about event. */
{
register TkText *textPtr = (TkText *) clientData;
TkTextIndex index, index2;
if (eventPtr->type == Expose) {
TkTextRedrawRegion(textPtr, eventPtr->xexpose.x,
eventPtr->xexpose.y, eventPtr->xexpose.width,
eventPtr->xexpose.height);
} else if (eventPtr->type == ConfigureNotify) {
if ((textPtr->prevWidth != Tk_Width(textPtr->tkwin))
|| (textPtr->prevHeight != Tk_Height(textPtr->tkwin))) {
TkTextRelayoutWindow(textPtr);
textPtr->prevWidth = Tk_Width(textPtr->tkwin);
textPtr->prevHeight = Tk_Height(textPtr->tkwin);
}
} else if (eventPtr->type == DestroyNotify) {
if (textPtr->tkwin != NULL) {
if (textPtr->setGrid) {
Tk_UnsetGrid(textPtr->tkwin);
}
textPtr->tkwin = NULL;
Tcl_DeleteCommandFromToken(textPtr->interp,
textPtr->widgetCmd);
}
Tcl_EventuallyFree((ClientData) textPtr, DestroyText);
} else if ((eventPtr->type == FocusIn) || (eventPtr->type == FocusOut)) {
if (eventPtr->xfocus.detail != NotifyInferior) {
Tcl_DeleteTimerHandler(textPtr->insertBlinkHandler);
if (eventPtr->type == FocusIn) {
textPtr->flags |= GOT_FOCUS | INSERT_ON;
if (textPtr->insertOffTime != 0) {
textPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
textPtr->insertOnTime, TextBlinkProc,
(ClientData) textPtr);
}
} else {
textPtr->flags &= ~(GOT_FOCUS | INSERT_ON);
textPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
}
#ifndef ALWAYS_SHOW_SELECTION
TkTextRedrawTag(textPtr, NULL, NULL, textPtr->selTagPtr, 1);
#endif
TkTextMarkSegToIndex(textPtr, textPtr->insertMarkPtr, &index);
TkTextIndexForwChars(&index, 1, &index2);
TkTextChanged(textPtr, &index, &index2);
if (textPtr->highlightWidth > 0) {
TkTextRedrawRegion(textPtr, 0, 0, textPtr->highlightWidth,
textPtr->highlightWidth);
}
}
}
}
/*
*----------------------------------------------------------------------
*
* TextCmdDeletedProc --
*
* This procedure is invoked when a widget command is deleted. If
* the widget isn't already in the process of being destroyed,
* this command destroys it.
*
* Results:
* None.
*
* Side effects:
* The widget is destroyed.
*
*----------------------------------------------------------------------
*/
static void
TextCmdDeletedProc(clientData)
ClientData clientData; /* Pointer to widget record for widget. */
{
TkText *textPtr = (TkText *) clientData;
Tk_Window tkwin = textPtr->tkwin;
/*
* This procedure could be invoked either because the window was
* destroyed and the command was then deleted (in which case tkwin
* is NULL) or because the command was deleted, and then this procedure
* destroys the widget.
*/
if (tkwin != NULL) {
if (textPtr->setGrid) {
Tk_UnsetGrid(textPtr->tkwin);
}
textPtr->tkwin = NULL;
Tk_DestroyWindow(tkwin);
}
}
/*
*----------------------------------------------------------------------
*
* InsertChars --
*
* This procedure implements most of the functionality of the
* "insert" widget command.
*
* Results:
* None.
*
* Side effects:
* The characters in "string" get added to the text just before
* the character indicated by "indexPtr".
*
*----------------------------------------------------------------------
*/
static void
InsertChars(textPtr, indexPtr, string)
TkText *textPtr; /* Overall information about text widget. */
TkTextIndex *indexPtr; /* Where to insert new characters. May be
* modified and/or invalidated. */
CONST char *string; /* Null-terminated string containing new
* information to add to text. */
{
int lineIndex, resetView, offset;
TkTextIndex newTop;
char indexBuffer[TK_POS_CHARS];
/*
* Don't allow insertions on the last (dummy) line of the text.
*/
lineIndex = TkBTreeLineIndex(indexPtr->linePtr);
if (lineIndex == TkBTreeNumLines(textPtr->tree)) {
lineIndex--;
TkTextMakeByteIndex(textPtr->tree, lineIndex, 1000000, indexPtr);
}
/*
* Notify the display module that lines are about to change, then do
* the insertion. If the insertion occurs on the top line of the
* widget (textPtr->topIndex), then we have to recompute topIndex
* after the insertion, since the insertion could invalidate it.
*/
resetView = offset = 0;
if (indexPtr->linePtr == textPtr->topIndex.linePtr) {
resetView = 1;
offset = textPtr->topIndex.byteIndex;
if (offset > indexPtr->byteIndex) {
offset += strlen(string);
}
}
TkTextChanged(textPtr, indexPtr, indexPtr);
TkBTreeInsertChars(indexPtr, string);
/*
* Push the insertion on the undo stack
*/
if ( textPtr->undo ) {
#ifndef _LANG
TkTextIndex toIndex;
Tcl_DString actionCommand;
Tcl_DString revertCommand;
if (textPtr->autoSeparators &&
textPtr->lastEditMode != TK_TEXT_EDIT_INSERT) {
TkUndoInsertUndoSeparator(textPtr->undoStack);
}
textPtr->lastEditMode = TK_TEXT_EDIT_INSERT;
Tcl_DStringInit(&actionCommand);
Tcl_DStringInit(&revertCommand);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," insert ",-1);
TkTextPrintIndex(indexPtr,indexBuffer);
Tcl_DStringAppend(&actionCommand,indexBuffer,-1);
Tcl_DStringAppend(&actionCommand," ",-1);
Tcl_DStringAppendElement(&actionCommand,string);
Tcl_DStringAppend(&actionCommand,";",-1);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," mark set insert ",-1);
TkTextIndexForwBytes(indexPtr, (int) strlen(string),
&toIndex);
TkTextPrintIndex(&toIndex, indexBuffer);
Tcl_DStringAppend(&actionCommand,indexBuffer,-1);
Tcl_DStringAppend(&actionCommand,"; ",-1);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," see insert",-1);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," delete ",-1);
TkTextPrintIndex(indexPtr,indexBuffer);
Tcl_DStringAppend(&revertCommand,indexBuffer,-1);
Tcl_DStringAppend(&revertCommand," ",-1);
TkTextPrintIndex(&toIndex, indexBuffer);
Tcl_DStringAppend(&revertCommand,indexBuffer,-1);
Tcl_DStringAppend(&revertCommand," ;",-1);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," mark set insert ",-1);
TkTextPrintIndex(indexPtr,indexBuffer);
Tcl_DStringAppend(&revertCommand,indexBuffer,-1);
Tcl_DStringAppend(&revertCommand,"; ",-1);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," see insert",-1);
TkUndoPushAction(textPtr->undoStack,&actionCommand, &revertCommand);
Tcl_DStringFree(&actionCommand);
Tcl_DStringFree(&revertCommand);
#endif
}
updateDirtyFlag(textPtr);
if (resetView) {
TkTextMakeByteIndex(textPtr->tree, lineIndex, 0, &newTop);
TkTextIndexForwBytes(&newTop, offset, &newTop);
TkTextSetYView(textPtr, &newTop, 0);
}
/*
* Invalidate any selection retrievals in progress.
*/
textPtr->abortSelections = 1;
}
/*
*----------------------------------------------------------------------
*
* DeleteChars --
*
* This procedure implements most of the functionality of the
* "delete" widget command.
*
* Results:
* Returns a standard Tcl result, and leaves an error message
* in textPtr->interp if there is an error.
*
* Side effects:
* Characters get deleted from the text.
*
*----------------------------------------------------------------------
*/
static int
DeleteChars(textPtr, index1String, index2String, indexPtr1, indexPtr2)
TkText *textPtr; /* Overall information about text widget. */
CONST char *index1String; /* String describing location of first
* character to delete. */
CONST char *index2String; /* String describing location of last
* character to delete. NULL means just
* delete the one character given by
* index1String. */
TkTextIndex *indexPtr1; /* index describing location of first
* character to delete. */
TkTextIndex *indexPtr2; /* index describing location of last
* character to delete. NULL means just
* delete the one character given by
* indexPtr1. */
{
int line1, line2, line, byteIndex, resetView;
TkTextIndex index1, index2;
char indexBuffer[TK_POS_CHARS];
/*
* Parse the starting and stopping indices.
*/
if (index1String != NULL) {
if (TkTextGetIndex(textPtr->interp, textPtr, index1String, &index1)
!= TCL_OK) {
return TCL_ERROR;
}
if (index2String != NULL) {
if (TkTextGetIndex(textPtr->interp, textPtr, index2String, &index2)
!= TCL_OK) {
return TCL_ERROR;
}
} else {
index2 = index1;
TkTextIndexForwChars(&index2, 1, &index2);
}
} else {
index1 = *indexPtr1;
if (indexPtr2 != NULL) {
index2 = *indexPtr2;
} else {
index2 = index1;
TkTextIndexForwChars(&index2, 1, &index2);
}
}
/*
* Make sure there's really something to delete.
*/
if (TkTextIndexCmp(&index1, &index2) >= 0) {
return TCL_OK;
}
/*
* The code below is ugly, but it's needed to make sure there
* is always a dummy empty line at the end of the text. If the
* final newline of the file (just before the dummy line) is being
* deleted, then back up index to just before the newline. If
* there is a newline just before the first character being deleted,
* then back up the first index too, so that an even number of lines
* gets deleted. Furthermore, remove any tags that are present on
* the newline that isn't going to be deleted after all (this simulates
* deleting the newline and then adding a "clean" one back again).
*/
line1 = TkBTreeLineIndex(index1.linePtr);
line2 = TkBTreeLineIndex(index2.linePtr);
if (line2 == TkBTreeNumLines(textPtr->tree)) {
TkTextTag **arrayPtr;
int arraySize, i;
TkTextIndex oldIndex2;
oldIndex2 = index2;
TkTextIndexBackChars(&oldIndex2, 1, &index2);
line2--;
if ((index1.byteIndex == 0) && (line1 != 0)) {
TkTextIndexBackChars(&index1, 1, &index1);
line1--;
}
arrayPtr = TkBTreeGetTags(&index2, &arraySize);
if (arrayPtr != NULL) {
for (i = 0; i < arraySize; i++) {
TkBTreeTag(&index2, &oldIndex2, arrayPtr[i], 0);
}
ckfree((char *) arrayPtr);
}
}
/*
* Tell the display what's about to happen so it can discard
* obsolete display information, then do the deletion. Also,
* if the deletion involves the top line on the screen, then
* we have to reset the view (the deletion will invalidate
* textPtr->topIndex). Compute what the new first character
* will be, then do the deletion, then reset the view.
*/
TkTextChanged(textPtr, &index1, &index2);
resetView = 0;
line = 0;
byteIndex = 0;
if (TkTextIndexCmp(&index2, &textPtr->topIndex) >= 0) {
if (TkTextIndexCmp(&index1, &textPtr->topIndex) <= 0) {
/*
* Deletion range straddles topIndex: use the beginning
* of the range as the new topIndex.
*/
resetView = 1;
line = line1;
byteIndex = index1.byteIndex;
} else if (index1.linePtr == textPtr->topIndex.linePtr) {
/*
* Deletion range starts on top line but after topIndex.
* Use the current topIndex as the new one.
*/
resetView = 1;
line = line1;
byteIndex = textPtr->topIndex.byteIndex;
}
} else if (index2.linePtr == textPtr->topIndex.linePtr) {
/*
* Deletion range ends on top line but before topIndex.
* Figure out what will be the new character index for
* the character currently pointed to by topIndex.
*/
resetView = 1;
line = line2;
byteIndex = textPtr->topIndex.byteIndex;
if (index1.linePtr != index2.linePtr) {
byteIndex -= index2.byteIndex;
} else {
byteIndex -= (index2.byteIndex - index1.byteIndex);
}
}
/*
* Push the deletion on the undo stack
*/
if (textPtr->undo) {
#ifndef _LANG
Tcl_DString ds;
Tcl_DString actionCommand;
Tcl_DString revertCommand;
if (textPtr->autoSeparators
&& (textPtr->lastEditMode != TK_TEXT_EDIT_DELETE)) {
TkUndoInsertUndoSeparator(textPtr->undoStack);
}
textPtr->lastEditMode = TK_TEXT_EDIT_DELETE;
Tcl_DStringInit(&actionCommand);
Tcl_DStringInit(&revertCommand);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," delete ",-1);
TkTextPrintIndex(&index1,indexBuffer);
Tcl_DStringAppend(&actionCommand,indexBuffer,-1);
Tcl_DStringAppend(&actionCommand," ",-1);
TkTextPrintIndex(&index2, indexBuffer);
Tcl_DStringAppend(&actionCommand,indexBuffer,-1);
Tcl_DStringAppend(&actionCommand,"; ",-1);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," mark set insert ",-1);
TkTextPrintIndex(&index1,indexBuffer);
Tcl_DStringAppend(&actionCommand,indexBuffer,-1);
Tcl_DStringAppend(&actionCommand,"; ",-1);
Tcl_DStringAppend(&actionCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&actionCommand," see insert",-1);
TextGetText(&index1, &index2, &ds);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," insert ",-1);
TkTextPrintIndex(&index1,indexBuffer);
Tcl_DStringAppend(&revertCommand,indexBuffer,-1);
Tcl_DStringAppend(&revertCommand," ",-1);
Tcl_DStringAppendElement(&revertCommand,Tcl_DStringValue(&ds));
Tcl_DStringAppend(&revertCommand,"; ",-1);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," mark set insert ",-1);
TkTextPrintIndex(&index2, indexBuffer);
Tcl_DStringAppend(&revertCommand,indexBuffer,-1);
Tcl_DStringAppend(&revertCommand,"; ",-1);
Tcl_DStringAppend(&revertCommand,Tcl_GetCommandName(textPtr->interp,textPtr->widgetCmd),-1);
Tcl_DStringAppend(&revertCommand," see insert",-1);
TkUndoPushAction(textPtr->undoStack,&actionCommand, &revertCommand);
Tcl_DStringFree(&actionCommand);
Tcl_DStringFree(&revertCommand);
#endif
}
updateDirtyFlag(textPtr);
TkBTreeDeleteChars(&index1, &index2);
if (resetView) {
TkTextMakeByteIndex(textPtr->tree, line, byteIndex, &index1);
TkTextSetYView(textPtr, &index1, 0);
}
/*
* Invalidate any selection retrievals in progress.
*/
textPtr->abortSelections = 1;
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* TextFetchSelection --
*
* This procedure is called back by Tk when the selection is
* requested by someone. It returns part or all of the selection
* in a buffer provided by the caller.
*
* Results:
* The return value is the number of non-NULL bytes stored
* at buffer. Buffer is filled (or partially filled) with a
* NULL-terminated string containing part or all of the selection,
* as given by offset and maxBytes.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
TextFetchSelection(clientData, offset, buffer, maxBytes)
ClientData clientData; /* Information about text widget. */
int offset; /* Offset within selection of first
* character to be returned. */
char *buffer; /* Location in which to place
* selection. */
int maxBytes; /* Maximum number of bytes to place
* at buffer, not including terminating
* NULL character. */
{
register TkText *textPtr = (TkText *) clientData;
TkTextIndex eof;
int count, chunkSize, offsetInSeg;
TkTextSearch search;
TkTextSegment *segPtr;
if (!textPtr->exportSelection) {
return -1;
}
/*
* Find the beginning of the next range of selected text. Note: if
* the selection is being retrieved in multiple pieces (offset != 0)
* and some modification has been made to the text that affects the
* selection then reject the selection request (make 'em start over
* again).
*/
if (offset == 0) {
TkTextMakeByteIndex(textPtr->tree, 0, 0, &textPtr->selIndex);
textPtr->abortSelections = 0;
} else if (textPtr->abortSelections) {
return 0;
}
TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &eof);
TkBTreeStartSearch(&textPtr->selIndex, &eof, textPtr->selTagPtr, &search);
if (!TkBTreeCharTagged(&textPtr->selIndex, textPtr->selTagPtr)) {
if (!TkBTreeNextTag(&search)) {
if (offset == 0) {
return -1;
} else {
return 0;
}
}
textPtr->selIndex = search.curIndex;
}
/*
* Each iteration through the outer loop below scans one selected range.
* Each iteration through the inner loop scans one segment in the
* selected range.
*/
count = 0;
while (1) {
/*
* Find the end of the current range of selected text.
*/
if (!TkBTreeNextTag(&search)) {
panic("TextFetchSelection couldn't find end of range");
}
/*
* Copy information from character segments into the buffer
* until either we run out of space in the buffer or we get
* to the end of this range of text.
*/
while (1) {
if (maxBytes == 0) {
goto done;
}
segPtr = TkTextIndexToSeg(&textPtr->selIndex, &offsetInSeg);
chunkSize = segPtr->size - offsetInSeg;
if (chunkSize > maxBytes) {
chunkSize = maxBytes;
}
if (textPtr->selIndex.linePtr == search.curIndex.linePtr) {
int leftInRange;
leftInRange = search.curIndex.byteIndex
- textPtr->selIndex.byteIndex;
if (leftInRange < chunkSize) {
chunkSize = leftInRange;
if (chunkSize <= 0) {
break;
}
}
}
if ((segPtr->typePtr == &tkTextCharType)
&& !TkTextIsElided(textPtr, &textPtr->selIndex)) {
memcpy((VOID *) buffer, (VOID *) (segPtr->body.chars
+ offsetInSeg), (size_t) chunkSize);
buffer += chunkSize;
maxBytes -= chunkSize;
count += chunkSize;
}
TkTextIndexForwBytes(&textPtr->selIndex, chunkSize,
&textPtr->selIndex);
}
/*
* Find the beginning of the next range of selected text.
*/
if (!TkBTreeNextTag(&search)) {
break;
}
textPtr->selIndex = search.curIndex;
}
done:
*buffer = 0;
return count;
}
/*
*----------------------------------------------------------------------
*
* TkTextLostSelection --
*
* This procedure is called back by Tk when the selection is
* grabbed away from a text widget. On Windows and Mac systems, we
* want to remember the selection for the next time the focus
* enters the window. On Unix, just remove the "sel" tag from
* everything in the widget.
*
* Results:
* None.
*
* Side effects:
* The "sel" tag is cleared from the window.
*
*----------------------------------------------------------------------
*/
void
TkTextLostSelection(clientData)
ClientData clientData; /* Information about text widget. */
{
register TkText *textPtr = (TkText *) clientData;
XEvent event;
#ifdef ALWAYS_SHOW_SELECTION
TkTextIndex start, end;
if (!textPtr->exportSelection) {
return;
}
/*
* On Windows and Mac systems, we want to remember the selection
* for the next time the focus enters the window. On Unix,
* just remove the "sel" tag from everything in the widget.
*/
TkTextMakeByteIndex(textPtr->tree, 0, 0, &start);
TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &end);
TkTextRedrawTag(textPtr, &start, &end, textPtr->selTagPtr, 1);
TkBTreeTag(&start, &end, textPtr->selTagPtr, 0);
#endif
/*
* Send an event that the selection changed. This is equivalent to
* "event generate $textWidget <<Selection>>"
*/
memset((VOID *) &event, 0, sizeof(event));
event.xany.type = VirtualEvent;
event.xany.serial = NextRequest(Tk_Display(textPtr->tkwin));
event.xany.send_event = False;
event.xany.window = Tk_WindowId(textPtr->tkwin);
event.xany.display = Tk_Display(textPtr->tkwin);
((XVirtualEvent *) &event)->name = Tk_GetUid("Selection");
Tk_HandleEvent(&event);
textPtr->flags &= ~GOT_SELECTION;
}
/*
*----------------------------------------------------------------------
*
* TextBlinkProc --
*
* This procedure is called as a timer handler to blink the
* insertion cursor off and on.
*
* Results:
* None.
*
* Side effects:
* The cursor gets turned on or off, redisplay gets invoked,
* and this procedure reschedules itself.
*
*----------------------------------------------------------------------
*/
static void
TextBlinkProc(clientData)
ClientData clientData; /* Pointer to record describing text. */
{
register TkText *textPtr = (TkText *) clientData;
TkTextIndex index;
int x, y, w, h;
if ((textPtr->state == TK_STATE_DISABLED) ||
!(textPtr->flags & GOT_FOCUS) || (textPtr->insertOffTime == 0)) {
return;
}
if (textPtr->flags & INSERT_ON) {
textPtr->flags &= ~INSERT_ON;
textPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
textPtr->insertOffTime, TextBlinkProc, (ClientData) textPtr);
} else {
textPtr->flags |= INSERT_ON;
textPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
textPtr->insertOnTime, TextBlinkProc, (ClientData) textPtr);
}
TkTextMarkSegToIndex(textPtr, textPtr->insertMarkPtr, &index);
if (TkTextCharBbox(textPtr, &index, &x, &y, &w, &h) == 0) {
TkTextRedrawRegion(textPtr, x - textPtr->insertWidth / 2, y,
textPtr->insertWidth, h);
}
}
/*
*----------------------------------------------------------------------
*
* TextSearchCmd --
*
* This procedure is invoked to process the "search" widget command
* for text widgets. See the user documentation for details on what
* it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
static int
TextSearchCmd(textPtr, interp, argc, argv)
TkText *textPtr; /* Information about text widget. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
int backwards, exact, searchElide, c, i, argsLeft, noCase, leftToScan;
size_t length;
int numLines, startingLine, startingByte, lineNum, firstByte, lastByte;
int code, matchLength, matchByte, passes, stopLine, searchWholeText;
int patLength;
CONST char *arg, *pattern, *p, *startOfLine;
Tcl_Obj *varName;
char buffer[20];
TkTextIndex index, stopIndex;
Tcl_DString line;
Tcl_DString patDString;
TkTextSegment *segPtr;
TkTextLine *linePtr;
TkTextIndex curIndex;
Tcl_Obj *patObj = NULL;
Tcl_RegExp regexp = NULL; /* Initialization needed only to
* prevent compiler warning. */
/*
* Parse switches and other arguments.
*/
exact = 1;
searchElide = 0;
curIndex.tree = textPtr->tree;
backwards = 0;
noCase = 0;
varName = NULL;
for (i = 2; i < argc; i++) {
arg = argv[i];
if (arg[0] != '-') {
break;
}
length = strlen(arg);
if (length < 2) {
badSwitch:
Tcl_AppendResult(interp, "bad switch \"", arg,
"\": must be --, -backward, -count, -elide, -exact, ",
"-forward, -nocase, or -regexp", (char *) NULL);
return TCL_ERROR;
}
c = arg[1];
if ((c == 'b') && (strncmp(argv[i], "-backwards", length) == 0)) {
backwards = 1;
} else if ((c == 'c') && (strncmp(argv[i], "-count", length) == 0)) {
if (i >= (argc-1)) {
Tcl_SetResult(interp, "no value given for \"-count\" option",
TCL_STATIC);
return TCL_ERROR;
}
i++;
varName = objv[i];
} else if ((c == 'e') && (length > 2)
&& (strncmp(argv[i], "-exact", length) == 0)) {
exact = 1;
} else if ((c == 'e') && (length > 2)
&& (strncmp(argv[i], "-elide", length) == 0)) {
searchElide = 1;
} else if ((c == 'h') && (strncmp(argv[i], "-hidden", length) == 0)) {
/*
* -hidden is kept around for backwards compatibility with
* the dash patch, but -elide is the official option
*/
searchElide = 1;
} else if ((c == 'f') && (strncmp(argv[i], "-forwards", length) == 0)) {
backwards = 0;
} else if ((c == 'n') && (strncmp(argv[i], "-nocase", length) == 0)) {
noCase = 1;
} else if ((c == 'r') && (strncmp(argv[i], "-regexp", length) == 0)) {
exact = 0;
} else if ((c == 'h') && (strncmp(argv[i], "-hidden", length) == 0)) {
searchElide = 1;
} else if ((c == 'e') && (strncmp(argv[i], "-elide", length) == 0)) {
searchElide = 1;
} else if ((c == '-') && (strncmp(argv[i], "--", length) == 0)) {
i++;
break;
} else {
goto badSwitch;
}
}
argsLeft = argc - (i+2);
if ((argsLeft != 0) && (argsLeft != 1)) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " search ?switches? pattern index ?stopIndex?\"",
(char *) NULL);
return TCL_ERROR;
}
pattern = argv[i];
#ifdef _LANG
patObj = objv[i];
Tcl_IncrRefCount(patObj);
#endif
/*
* Convert the pattern to lower-case if we're supposed to ignore case.
*/
if (noCase && exact) {
Tcl_DStringInit(&patDString);
Tcl_DStringAppend(&patDString, pattern, -1);
Tcl_UtfToLower(Tcl_DStringValue(&patDString));
pattern = Tcl_DStringValue(&patDString);
}
Tcl_DStringInit(&line);
if (TkTextGetIndex(interp, textPtr, argv[i+1], &index) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
numLines = TkBTreeNumLines(textPtr->tree);
startingLine = TkBTreeLineIndex(index.linePtr);
startingByte = index.byteIndex;
if (startingLine >= numLines) {
if (backwards) {
startingLine = TkBTreeNumLines(textPtr->tree) - 1;
startingByte = TkBTreeBytesInLine(TkBTreeFindLine(textPtr->tree,
startingLine));
} else {
startingLine = 0;
startingByte = 0;
}
}
if (argsLeft == 1) {
if (TkTextGetIndex(interp, textPtr, argv[i+2], &stopIndex) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
stopLine = TkBTreeLineIndex(stopIndex.linePtr);
if (!backwards && (stopLine == numLines)) {
stopLine = numLines-1;
}
searchWholeText = 0;
} else {
stopLine = 0;
searchWholeText = 1;
}
/*
* Scan through all of the lines of the text circularly, starting
* at the given index.
*/
matchLength = patLength = 0; /* Only needed to prevent compiler
* warnings. */
if (exact) {
patLength = strlen(pattern);
} else {
#ifndef _LANG
patObj = Tcl_NewStringObj(pattern, -1);
Tcl_IncrRefCount(patObj);
#endif
regexp = Tcl_GetRegExpFromObj(interp, patObj,
(noCase ? TCL_REG_NOCASE : 0) | TCL_REG_ADVANCED);
if (regexp == NULL) {
code = TCL_ERROR;
goto done;
}
}
lineNum = startingLine;
code = TCL_OK;
for (passes = 0; passes < 2; ) {
if (lineNum >= numLines) {
/*
* Don't search the dummy last line of the text.
*/
goto nextLine;
}
/*
* Extract the text from the line. If we're doing regular
* expression matching, drop the newline from the line, so
* that "$" can be used to match the end of the line.
*/
linePtr = TkBTreeFindLine(textPtr->tree, lineNum);
curIndex.linePtr = linePtr; curIndex.byteIndex = 0;
for (segPtr = linePtr->segPtr; segPtr != NULL;
curIndex.byteIndex += segPtr->size, segPtr = segPtr->nextPtr) {
if ((segPtr->typePtr != &tkTextCharType)
|| (!searchElide && TkTextIsElided(textPtr, &curIndex))) {
continue;
}
Tcl_DStringAppend(&line, segPtr->body.chars, segPtr->size);
}
if (!exact) {
Tcl_DStringSetLength(&line, Tcl_DStringLength(&line)-1);
}
startOfLine = Tcl_DStringValue(&line);
/*
* If we're ignoring case, convert the line to lower case.
*/
if (noCase && exact) {
Tcl_DStringSetLength(&line,
Tcl_UtfToLower(Tcl_DStringValue(&line)));
}
/*
* Check for matches within the current line. If so, and if we're
* searching backwards, repeat the search to find the last match
* in the line. (Note: The lastByte should include the NULL char
* so we can handle searching for end of line easier.)
*/
matchByte = -1;
firstByte = 0;
lastByte = Tcl_DStringLength(&line) + 1;
if (lineNum == startingLine) {
int indexInDString;
/*
* The starting line is tricky: the first time we see it
* we check one part of the line, and the second pass through
* we check the other part of the line. We have to be very
* careful here because there could be embedded windows or
* other things that are not in the extracted line. Rescan
* the original line to compute the index in it of the first
* character.
*/
indexInDString = startingByte;
for (segPtr = linePtr->segPtr, leftToScan = startingByte;
leftToScan > 0; segPtr = segPtr->nextPtr) {
if (segPtr->typePtr != &tkTextCharType) {
indexInDString -= segPtr->size;
}
leftToScan -= segPtr->size;
}
passes++;
if ((passes == 1) ^ backwards) {
/*
* Only use the last part of the line.
*/
firstByte = indexInDString;
if ((firstByte >= Tcl_DStringLength(&line))
&& !((Tcl_DStringLength(&line) == 0) && !exact)) {
goto nextLine;
}
} else {
/*
* Use only the first part of the line.
*/
lastByte = indexInDString;
}
}
do {
int thisLength;
Tcl_UniChar ch;
if (exact) {
p = strstr(startOfLine + firstByte, /* INTL: Native. */
pattern);
if (p == NULL) {
break;
}
i = p - startOfLine;
thisLength = patLength;
} else {
CONST84 char *start, *end;
int match;
match = Tcl_RegExpExec(interp, regexp,
startOfLine + firstByte, startOfLine);
if (match < 0) {
code = TCL_ERROR;
goto done;
}
if (!match) {
break;
}
Tcl_RegExpRange(regexp, 0, &start, &end);
i = start - startOfLine;
thisLength = end - start;
}
if (i >= lastByte) {
break;
}
matchByte = i;
matchLength = thisLength;
firstByte = i + Tcl_UtfToUniChar(startOfLine + matchByte, &ch);
} while (backwards);
/*
* If we found a match then we're done. Make sure that
* the match occurred before the stopping index, if one was
* specified.
*/
if (matchByte >= 0) {
int numChars;
/*
* Convert the byte length to a character count.
*/
numChars = Tcl_NumUtfChars(startOfLine + matchByte,
matchLength);
/*
* The index information returned by the regular expression
* parser only considers textual information: it doesn't
* account for embedded windows, elided text (when we are not
* searching elided text) or any other non-textual info.
* Scan through the line's segments again to adjust both
* matchChar and matchCount.
*
* We will walk through the segments of this line until we have
* either reached the end of the match or we have reached the end
* of the line.
*/
curIndex.linePtr = linePtr; curIndex.byteIndex = 0;
for (segPtr = linePtr->segPtr, leftToScan = matchByte;
leftToScan >= 0 && segPtr; segPtr = segPtr->nextPtr) {
if (segPtr->typePtr != &tkTextCharType || \
(!searchElide && TkTextIsElided(textPtr, &curIndex))) {
matchByte += segPtr->size;
} else {
leftToScan -= segPtr->size;
}
curIndex.byteIndex += segPtr->size;
}
for (leftToScan += matchLength; leftToScan > 0;
segPtr = segPtr->nextPtr) {
if (segPtr->typePtr != &tkTextCharType) {
numChars += segPtr->size;
continue;
}
leftToScan -= segPtr->size;
}
TkTextMakeByteIndex(textPtr->tree, lineNum, matchByte, &index);
if (!searchWholeText) {
if (!backwards && (TkTextIndexCmp(&index, &stopIndex) >= 0)) {
goto done;
}
if (backwards && (TkTextIndexCmp(&index, &stopIndex) < 0)) {
goto done;
}
}
if (varName != NULL) {
Tcl_Obj *temp = Tcl_NewIntObj(numChars);
if (Tcl_ObjSetVar2(interp, varName, NULL, temp, TCL_LEAVE_ERR_MSG)
== NULL) {
code = TCL_ERROR;
Tcl_DecrRefCount(temp);
goto done;
}
Tcl_DecrRefCount(temp);
}
TkTextPrintIndex(&index, buffer);
Tcl_SetResult(interp, buffer, TCL_VOLATILE);
goto done;
}
/*
* Go to the next (or previous) line;
*/
nextLine:
if (backwards) {
lineNum--;
if (!searchWholeText) {
if (lineNum < stopLine) {
break;
}
} else if (lineNum < 0) {
lineNum = numLines-1;
}
} else {
lineNum++;
if (!searchWholeText) {
if (lineNum > stopLine) {
break;
}
} else if (lineNum >= numLines) {
lineNum = 0;
}
}
Tcl_DStringSetLength(&line, 0);
}
done:
Tcl_DStringFree(&line);
if (noCase && exact) {
Tcl_DStringFree(&patDString);
}
if (patObj != NULL) {
Tcl_DecrRefCount(patObj);
}
#ifdef _LANG
if (regexp) {
Lang_FreeRegExp(regexp);
}
#endif
return code;
}
/*
*----------------------------------------------------------------------
*
* TkTextGetTabs --
*
* Parses a string description of a set of tab stops.
*
* Results:
* The return value is a pointer to a malloc'ed structure holding
* parsed information about the tab stops. If an error occurred
* then the return value is NULL and an error message is left in
* the interp's result.
*
* Side effects:
* Memory is allocated for the structure that is returned. It is
* up to the caller to free this structure when it is no longer
* needed.
*
*----------------------------------------------------------------------
*/
TkTextTabArray *
TkTextGetTabs(interp, tkwin, arg)
Tcl_Interp *interp; /* Used for error reporting. */
Tk_Window tkwin; /* Window in which the tabs will be
* used. */
Tcl_Obj * arg; /* Description of the tab stops. See
* the text manual entry for details. */
{
int argc, i, count, c;
Tcl_Obj **objv;
TkTextTabArray *tabArrayPtr;
TkTextTab *tabPtr;
Tcl_UniChar ch;
if (Tcl_ListObjGetElements(interp, arg, &argc, &argv) != TCL_OK) {
return NULL;
}
/*
* First find out how many entries we need to allocate in the
* tab array.
*/
count = 0;
for (i = 0; i < argc; i++) {
c = argv[i][0];
if ((c != 'l') && (c != 'r') && (c != 'c') && (c != 'n')) {
count++;
}
}
/*
* Parse the elements of the list one at a time to fill in the
* array.
*/
tabArrayPtr = (TkTextTabArray *) ckalloc((unsigned)
(sizeof(TkTextTabArray) + (count-1)*sizeof(TkTextTab)));
tabArrayPtr->numTabs = 0;
for (i = 0, tabPtr = &tabArrayPtr->tabs[0]; i < argc; i++, tabPtr++) {
if (Tk_GetPixels(interp, tkwin, argv[i], &tabPtr->location)
!= TCL_OK) {
goto error;
}
tabArrayPtr->numTabs++;
/*
* See if there is an explicit alignment in the next list
* element. Otherwise just use "left".
*/
tabPtr->alignment = LEFT;
if ((i+1) == argc) {
continue;
}
Tcl_UtfToUniChar(argv[i+1], &ch);
if (!Tcl_UniCharIsAlpha(ch)) {
continue;
}
i += 1;
c = argv[i][0];
if ((c == 'l') && (strncmp(argv[i], "left",
strlen(argv[i])) == 0)) {
tabPtr->alignment = LEFT;
} else if ((c == 'r') && (strncmp(argv[i], "right",
strlen(argv[i])) == 0)) {
tabPtr->alignment = RIGHT;
} else if ((c == 'c') && (strncmp(argv[i], "center",
strlen(argv[i])) == 0)) {
tabPtr->alignment = CENTER;
} else if ((c == 'n') && (strncmp(argv[i],
"numeric", strlen(argv[i])) == 0)) {
tabPtr->alignment = NUMERIC;
} else {
Tcl_AppendResult(interp, "bad tab alignment \"",
argv[i], "\": must be left, right, center, or numeric",
(char *) NULL);
goto error;
}
}
return tabArrayPtr;
error:
ckfree((char *) tabArrayPtr);
return NULL;
}
/*
*----------------------------------------------------------------------
*
* TextDumpCmd --
*
* Return information about the text, tags, marks, and embedded windows
* and images in a text widget. See the man page for the description
* of the text dump operation for all the details.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Memory is allocated for the result, if needed (standard Tcl result
* side effects).
*
*----------------------------------------------------------------------
*/
static int
TextDumpCmd(textPtr, interp, argc, argv)
register TkText *textPtr; /* Information about text widget. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. Someone else has already
* parsed this command enough to know that
* argv[1] is "dump". */
{
TkTextIndex index1, index2;
int arg;
int lineno; /* Current line number */
int what = 0; /* bitfield to select segment types */
int atEnd; /* True if dumping up to logical end */
TkTextLine *linePtr;
LangCallback *command = NULL; /* Script callback to apply to segments */
#define TK_DUMP_TEXT 0x1
#define TK_DUMP_MARK 0x2
#define TK_DUMP_TAG 0x4
#define TK_DUMP_WIN 0x8
#define TK_DUMP_IMG 0x10
#define TK_DUMP_ALL (TK_DUMP_TEXT|TK_DUMP_MARK|TK_DUMP_TAG| \
TK_DUMP_WIN|TK_DUMP_IMG)
for (arg=2 ; argv[arg] != (char *) NULL ; arg++) {
size_t len;
if (argv[arg][0] != '-') {
break;
}
len = strlen(argv[arg]);
if (strncmp("-all", argv[arg], len) == 0) {
what = TK_DUMP_ALL;
} else if (strncmp("-text", argv[arg], len) == 0) {
what |= TK_DUMP_TEXT;
} else if (strncmp("-tag", argv[arg], len) == 0) {
what |= TK_DUMP_TAG;
} else if (strncmp("-mark", argv[arg], len) == 0) {
what |= TK_DUMP_MARK;
} else if (strncmp("-image", argv[arg], len) == 0) {
what |= TK_DUMP_IMG;
} else if (strncmp("-window", argv[arg], len) == 0) {
what |= TK_DUMP_WIN;
} else if (strncmp("-command", argv[arg], len) == 0) {
arg++;
if (arg >= argc) {
Tcl_AppendResult(interp, "Usage: ", argv[0], " dump ?-all -image -text -mark -tag -window? ?-command script? index ?index2?", NULL);
return TCL_ERROR;
}
command = LangMakeCallback(objv[arg]);
} else {
Tcl_AppendResult(interp, "Usage: ", argv[0], " dump ?-all -image -text -mark -tag -window? ?-command script? index ?index2?", NULL);
return TCL_ERROR;
}
}
if (arg >= argc) {
Tcl_AppendResult(interp, "Usage: ", argv[0], " dump ?-all -image -text -mark -tag -window? ?-command script? index ?index2?", NULL);
return TCL_ERROR;
}
if (what == 0) {
what = TK_DUMP_ALL;
}
if (TkTextGetIndex(interp, textPtr, argv[arg], &index1) != TCL_OK) {
goto error;
}
lineno = TkBTreeLineIndex(index1.linePtr);
arg++;
atEnd = 0;
if (argc == arg) {
TkTextIndexForwChars(&index1, 1, &index2);
} else {
if (TkTextGetIndex(interp, textPtr, argv[arg], &index2) != TCL_OK) {
goto error;
}
if (strncmp(argv[arg], "end", strlen(argv[arg])) == 0) {
atEnd = 1;
}
}
if (TkTextIndexCmp(&index1, &index2) >= 0) {
goto ok;
}
if (index1.linePtr == index2.linePtr) {
DumpLine(interp, textPtr, what, index1.linePtr,
index1.byteIndex, index2.byteIndex, lineno, command);
} else {
DumpLine(interp, textPtr, what, index1.linePtr,
index1.byteIndex, 32000000, lineno, command);
linePtr = index1.linePtr;
while ((linePtr = TkBTreeNextLine(linePtr)) != (TkTextLine *)NULL) {
lineno++;
if (linePtr == index2.linePtr) {
break;
}
DumpLine(interp, textPtr, what, linePtr, 0, 32000000,
lineno, command);
}
DumpLine(interp, textPtr, what, index2.linePtr, 0,
index2.byteIndex, lineno, command);
}
/*
* Special case to get the leftovers hiding at the end mark.
*/
if (atEnd) {
DumpLine(interp, textPtr, what & ~TK_DUMP_TEXT, index2.linePtr,
0, 1, lineno, command);
}
ok:
if (command != (LangCallback *) NULL)
LangFreeCallback(command);
return TCL_OK;
error:
if (command != (LangCallback *) NULL)
LangFreeCallback(command);
return TCL_ERROR;
}
/*
* DumpLine
* Return information about a given text line from character
* position "start" up to, but not including, "end".
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None, but see DumpSegment.
*/
static void
DumpLine(interp, textPtr, what, linePtr, startByte, endByte, lineno, command)
Tcl_Interp *interp;
TkText *textPtr;
int what; /* bit flags to select segment types */
TkTextLine *linePtr; /* The current line */
int startByte, endByte; /* Byte range to dump */
int lineno; /* Line number for indices dump */
LangCallback *command; /* Script to apply to the segment */
{
int offset;
TkTextSegment *segPtr;
TkTextIndex index;
/*
* Must loop through line looking at its segments.
* character
* toggleOn, toggleOff
* mark
* image
* window
*/
for (offset = 0, segPtr = linePtr->segPtr ;
(offset < endByte) && (segPtr != (TkTextSegment *)NULL) ;
offset += segPtr->size, segPtr = segPtr->nextPtr) {
if ((what & TK_DUMP_TEXT) && (segPtr->typePtr == &tkTextCharType) &&
(offset + segPtr->size > startByte)) {
char savedChar; /* Last char used in the seg */
int last = segPtr->size; /* Index of savedChar */
int first = 0; /* Index of first char in seg */
if (offset + segPtr->size > endByte) {
last = endByte - offset;
}
if (startByte > offset) {
first = startByte - offset;
}
savedChar = segPtr->body.chars[last];
segPtr->body.chars[last] = '\0';
TkTextMakeByteIndex(textPtr->tree, lineno, offset + first, &index);
DumpSegment(interp, "text", segPtr->body.chars + first, NULL,
command, &index, what);
segPtr->body.chars[last] = savedChar;
} else if ((offset >= startByte)) {
if ((what & TK_DUMP_MARK) && (segPtr->typePtr->name[0] == 'm')) {
TkTextMark *markPtr = (TkTextMark *)&segPtr->body;
char *name = Tcl_GetHashKey(&textPtr->markTable, markPtr->hPtr);
TkTextMakeByteIndex(textPtr->tree, lineno, offset, &index);
DumpSegment(interp, "mark", name, NULL, command, &index, what);
} else if ((what & TK_DUMP_TAG) &&
(segPtr->typePtr == &tkTextToggleOnType)) {
TkTextMakeByteIndex(textPtr->tree, lineno, offset, &index);
DumpSegment(interp, "tagon",
segPtr->body.toggle.tagPtr->name, NULL,
command, &index, what);
} else if ((what & TK_DUMP_TAG) &&
(segPtr->typePtr == &tkTextToggleOffType)) {
TkTextMakeByteIndex(textPtr->tree, lineno, offset, &index);
DumpSegment(interp, "tagoff",
segPtr->body.toggle.tagPtr->name, NULL,
command, &index, what);
} else if ((what & TK_DUMP_IMG) &&
(segPtr->typePtr->name[0] == 'i')) {
TkTextEmbImage *eiPtr = (TkTextEmbImage *)&segPtr->body;
char *name = (eiPtr->name == NULL) ? "" : eiPtr->name;
Tcl_Obj *obj;
TkTextMakeByteIndex(textPtr->tree, lineno, offset, &index);
obj = LangObjectObj( interp, eiPtr->name);
DumpSegment(interp, "image", name, obj,
command, &index, what);
} else if ((what & TK_DUMP_WIN) &&
(segPtr->typePtr->name[0] == 'w')) {
TkTextEmbWindow *ewPtr = (TkTextEmbWindow *)&segPtr->body;
TkTextMakeByteIndex(textPtr->tree, lineno, offset, &index);
if (ewPtr->tkwin == (Tk_Window) NULL) {
DumpSegment(interp, "window", NULL, NULL,
command, &index, what);
} else {
Tcl_Obj *obj = LangWidgetObj(interp, ewPtr->tkwin);
DumpSegment(interp, "window", NULL, obj,
command, &index, what);
Tcl_DecrRefCount(obj);
}
}
}
}
}
/*
* DumpSegment
* Either append information about the current segment to the result,
* or make a script callback with that information as arguments.
*
* Results:
* None
*
* Side effects:
* Either evals the callback or appends elements to the result string.
*/
static int
DumpSegment(interp, key, value, arg, command, index, what)
Tcl_Interp *interp;
char *key; /* Segment type key */
char *value; /* Segment value */
Tcl_Obj *arg; /* Segment as an Tcl_Obj * */
LangCallback *command; /* Script callback */
TkTextIndex *index; /* index with line/byte position info */
int what; /* Look for TK_DUMP_INDEX bit */
{
char buffer[TCL_INTEGER_SPACE*2];
TkTextPrintIndex(index, buffer);
if (command == NULL) {
Tcl_AppendElement(interp, key);
if (arg || !value) {
Tcl_IncrRefCount(arg);
Tcl_ListObjAppendElement(interp, Tcl_GetObjResult(interp), arg);
} else {
Tcl_AppendElement(interp, value);
}
Tcl_AppendElement(interp, buffer);
return TCL_OK;
} else {
int result;
#if 0
/* Tcl/Tk passes list of three strings */
CONST char *argv[4];
char *list;
argv[0] = key;
argv[1] = value;
argv[2] = buffer;
argv[3] = NULL;
list = Tcl_Merge(3, argv);
result = Tcl_VarEval(interp, command, " ", list, (char *) NULL);
ckfree(list);
#else
if (arg) {
result = LangDoCallback(interp, command, 1, 3, "%s %_ %s", key, arg, buffer);
} else {
result = LangDoCallback(interp, command, 1, 3, "%s %s %s", key, value, buffer);
}
#endif
return result;
}
}
/*
* TextEditUndo --
* undo the last change.
*
* Results:
* None
*
* Side effects:
* None.
*/
static int
TextEditUndo(textPtr)
TkText * textPtr; /* Overall information about text widget. */
{
int status;
if (!textPtr->undo) {
return TCL_OK;
}
/* Turn off the undo feature */
textPtr->undo = 0;
/* The dirty counter should count downwards as we are undoing things */
textPtr->isDirtyIncrement = -1;
/* revert one compound action */
status = TkUndoRevert(textPtr->undoStack);
/* Restore the isdirty increment */
textPtr->isDirtyIncrement = 1;
/* Turn back on the undo feature */
textPtr->undo = 1;
return status;
}
/*
* TextEditRedo --
* redo the last undone change.
*
* Results:
* None
*
* Side effects:
* None.
*/
static int
TextEditRedo(textPtr)
TkText * textPtr; /* Overall information about text widget. */
{
int status;
if (!textPtr->undo) {
return TCL_OK;
}
/* Turn off the undo feature temporarily */
textPtr->undo = 0;
/* reapply one compound action */
status = TkUndoApply(textPtr->undoStack);
/* Turn back on the undo feature */
textPtr->undo = 1;
return status;
}
/*
* TextEditCmd --
*
* Handle the subcommands to "$text edit ...".
* See documentation for details.
*
* Results:
* None
*
* Side effects:
* None.
*/
static int
TextEditCmd(textPtr, interp, argc, argv)
TkText *textPtr; /* Information about text widget. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
int c, setModified;
size_t length;
if (argc < 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit option ?arg arg ...?\"", (char *) NULL);
return TCL_ERROR;
}
c = argv[2][0];
length = strlen(argv[2]);
if ((c == 'm') && (strncmp(argv[2], "modified", length) == 0)) {
if (argc == 3) {
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(textPtr->isDirty));
} else if (argc != 4) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit modified ?boolean?\"", (char *) NULL);
return TCL_ERROR;
} else {
XEvent event;
if (Tcl_GetBooleanFromObj(interp, objv[3], &setModified) != TCL_OK) {
return TCL_ERROR;
}
/*
* Set or reset the dirty info and trigger a Modified event.
*/
if (setModified) {
textPtr->isDirty = 1;
textPtr->modifiedSet = 1;
} else {
textPtr->isDirty = 0;
textPtr->modifiedSet = 0;
}
/*
* Send an event that the text was modified. This is equivalent to
* "event generate $textWidget <<Modified>>"
*/
memset((VOID *) &event, 0, sizeof(event));
event.xany.type = VirtualEvent;
event.xany.serial = NextRequest(Tk_Display(textPtr->tkwin));
event.xany.send_event = False;
event.xany.window = Tk_WindowId(textPtr->tkwin);
event.xany.display = Tk_Display(textPtr->tkwin);
((XVirtualEvent *) &event)->name = Tk_GetUid("Modified");
Tk_HandleEvent(&event);
}
} else if ((c == 'r') && (strncmp(argv[2], "redo", length) == 0)
&& (length >= 3)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit redo\"", (char *) NULL);
return TCL_ERROR;
}
if ( TextEditRedo(textPtr) ) {
Tcl_AppendResult(interp, "nothing to redo", (char *) NULL);
return TCL_ERROR;
}
} else if ((c == 'r') && (strncmp(argv[2], "reset", length) == 0)
&& (length >= 3)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit reset\"", (char *) NULL);
return TCL_ERROR;
}
TkUndoClearStacks(textPtr->undoStack);
} else if ((c == 's') && (strncmp(argv[2], "separator", length) == 0)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit separator\"", (char *) NULL);
return TCL_ERROR;
}
TkUndoInsertUndoSeparator(textPtr->undoStack);
} else if ((c == 'u') && (strncmp(argv[2], "undo", length) == 0)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " edit undo\"", (char *) NULL);
return TCL_ERROR;
}
if ( TextEditUndo(textPtr) ) {
Tcl_AppendResult(interp, "nothing to undo",
(char *) NULL);
return TCL_ERROR;
}
} else {
Tcl_AppendResult(interp, "bad edit option \"", argv[2],
"\": must be modified, redo, reset, separator or undo",
(char *) NULL);
return TCL_ERROR;
}
return TCL_OK;
}
/*
* TextGetText --
* Returns the text from indexPtr1 to indexPtr2, placing that text
* in the Tcl_DString given. That DString should be free or uninitialized.
*
* Results:
* None.
*
* Side effects:
* Memory will be allocated for the DString. Remember to free it.
*/
static void
TextGetText(indexPtr1,indexPtr2, dsPtr)
TkTextIndex *indexPtr1;
TkTextIndex *indexPtr2;
Tcl_DString *dsPtr;
{
TkTextIndex tmpIndex;
Tcl_DStringInit(dsPtr);
TkTextMakeByteIndex(indexPtr1->tree, TkBTreeLineIndex(indexPtr1->linePtr),
indexPtr1->byteIndex, &tmpIndex);
if (TkTextIndexCmp(indexPtr1, indexPtr2) < 0) {
while (1) {
int offset, last;
TkTextSegment *segPtr;
segPtr = TkTextIndexToSeg(&tmpIndex, &offset);
last = segPtr->size;
if (tmpIndex.linePtr == indexPtr2->linePtr) {
int last2;
if (indexPtr2->byteIndex == tmpIndex.byteIndex) {
break;
}
last2 = indexPtr2->byteIndex - tmpIndex.byteIndex + offset;
if (last2 < last) {
last = last2;
}
}
if (segPtr->typePtr == &tkTextCharType) {
Tcl_DStringAppend(dsPtr, segPtr->body.chars + offset,
last - offset);
}
TkTextIndexForwBytes(&tmpIndex, last-offset, &tmpIndex);
}
}
}
/*
* updateDirtyFlag --
* increases the dirtyness of the text widget
*
* Results:
* None
*
* Side effects:
* None.
*/
static void updateDirtyFlag (textPtr)
TkText *textPtr; /* Information about text widget. */
{
int oldDirtyFlag;
if (textPtr->modifiedSet) {
return;
}
oldDirtyFlag = textPtr->isDirty;
textPtr->isDirty += textPtr->isDirtyIncrement;
if (textPtr->isDirty == 0 || oldDirtyFlag == 0) {
XEvent event;
/*
* Send an event that the text was modified. This is equivalent to
* "event generate $textWidget <<Modified>>"
*/
memset((VOID *) &event, 0, sizeof(event));
event.xany.type = VirtualEvent;
event.xany.serial = NextRequest(Tk_Display(textPtr->tkwin));
event.xany.send_event = False;
event.xany.window = Tk_WindowId(textPtr->tkwin);
event.xany.display = Tk_Display(textPtr->tkwin);
((XVirtualEvent *) &event)->name = Tk_GetUid("Modified");
Tk_HandleEvent(&event);
}
}