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29b91666404b82032ecce2c2c73669befa3acc3f
aspn/tktable/generic/tkTableEdit.c
baloan d19378fbab tktable added 
--HG--
branch : aspn
2011-03-14 23:41:59 +01:00

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/*
* tkTableEdit.c --
*
* This module implements editing functions of a table widget.
*
* Copyright (c) 1998-2000 Jeffrey Hobbs
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkTableEdit.c,v 1.7 2002/10/16 07:30:56 hobbs Exp $
*/
#include "tkTable.h"
static void TableModifyRC _ANSI_ARGS_((register Table *tablePtr,
int doRows, int movetag,
Tcl_HashTable *tagTblPtr, Tcl_HashTable *dimTblPtr,
int offset, int from, int to, int lo, int hi,
int outOfBounds));
/* insert/delete subcommands */
static CONST84 char *modCmdNames[] = {
"active", "cols", "rows", (char *)NULL
};
enum modCmd {
MOD_ACTIVE, MOD_COLS, MOD_ROWS
};
/* insert/delete row/col switches */
static CONST84 char *rcCmdNames[] = {
"-keeptitles", "-holddimensions", "-holdselection",
"-holdtags", "-holdwindows", "--",
(char *) NULL
};
enum rcCmd {
OPT_TITLES, OPT_DIMS, OPT_SEL,
OPT_TAGS, OPT_WINS, OPT_LAST
};
#define HOLD_TITLES 1<<0
#define HOLD_DIMS 1<<1
#define HOLD_TAGS 1<<2
#define HOLD_WINS 1<<3
#define HOLD_SEL 1<<4
/*
*--------------------------------------------------------------
*
* Table_EditCmd --
* This procedure is invoked to process the insert/delete method
* that corresponds to a table widget managed by this module.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
int
Table_EditCmd(ClientData clientData, register Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
register Table *tablePtr = (Table *) clientData;
int doInsert, cmdIndex, first, last;
if (objc < 4) {
Tcl_WrongNumArgs(interp, 2, objv,
"option ?switches? arg ?arg?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[2], modCmdNames,
"option", 0, &cmdIndex) != TCL_OK) {
return TCL_ERROR;
}
doInsert = (*(Tcl_GetString(objv[1])) == 'i');
switch ((enum modCmd) cmdIndex) {
case MOD_ACTIVE:
if (doInsert) {
/* INSERT */
if (objc != 5) {
Tcl_WrongNumArgs(interp, 3, objv, "index string");
return TCL_ERROR;
}
if (TableGetIcursorObj(tablePtr, objv[3], &first) != TCL_OK) {
return TCL_ERROR;
} else if ((tablePtr->flags & HAS_ACTIVE) &&
!(tablePtr->flags & ACTIVE_DISABLED) &&
tablePtr->state == STATE_NORMAL) {
TableInsertChars(tablePtr, first, Tcl_GetString(objv[4]));
}
} else {
/* DELETE */
if (objc > 5) {
Tcl_WrongNumArgs(interp, 3, objv, "first ?last?");
return TCL_ERROR;
}
if (TableGetIcursorObj(tablePtr, objv[3], &first) != TCL_OK) {
return TCL_ERROR;
}
if (objc == 4) {
last = first+1;
} else if (TableGetIcursorObj(tablePtr, objv[4],
&last) != TCL_OK) {
return TCL_ERROR;
}
if ((last >= first) && (tablePtr->flags & HAS_ACTIVE) &&
!(tablePtr->flags & ACTIVE_DISABLED) &&
tablePtr->state == STATE_NORMAL) {
TableDeleteChars(tablePtr, first, last-first);
}
}
break; /* EDIT ACTIVE */
case MOD_COLS:
case MOD_ROWS: {
/*
* ROW/COL INSERTION/DELETION
* FIX: This doesn't handle spans
*/
int i, lo, hi, argsLeft, offset, minkeyoff, doRows;
int maxrow, maxcol, maxkey, minkey, flags, count, *dimPtr;
Tcl_HashTable *tagTblPtr, *dimTblPtr;
Tcl_HashSearch search;
doRows = (cmdIndex == MOD_ROWS);
flags = 0;
for (i = 3; i < objc; i++) {
if (*(Tcl_GetString(objv[i])) != '-') {
break;
}
if (Tcl_GetIndexFromObj(interp, objv[i], rcCmdNames,
"switch", 0, &cmdIndex) != TCL_OK) {
return TCL_ERROR;
}
if (cmdIndex == OPT_LAST) {
i++;
break;
}
switch (cmdIndex) {
case OPT_TITLES:
flags |= HOLD_TITLES;
break;
case OPT_DIMS:
flags |= HOLD_DIMS;
break;
case OPT_SEL:
flags |= HOLD_SEL;
break;
case OPT_TAGS:
flags |= HOLD_TAGS;
break;
case OPT_WINS:
flags |= HOLD_WINS;
break;
}
}
argsLeft = objc - i;
if (argsLeft < 1 || argsLeft > 2) {
Tcl_WrongNumArgs(interp, 3, objv, "?switches? index ?count?");
return TCL_ERROR;
}
count = 1;
maxcol = tablePtr->cols-1+tablePtr->colOffset;
maxrow = tablePtr->rows-1+tablePtr->rowOffset;
if (strcmp(Tcl_GetString(objv[i]), "end") == 0) {
/* allow "end" to be specified as an index */
first = (doRows) ? maxrow : maxcol;
} else if (Tcl_GetIntFromObj(interp, objv[i], &first) != TCL_OK) {
return TCL_ERROR;
}
if (argsLeft == 2 &&
Tcl_GetIntFromObj(interp, objv[++i], &count) != TCL_OK) {
return TCL_ERROR;
}
if (count == 0 || (tablePtr->state == STATE_DISABLED)) {
return TCL_OK;
}
if (doRows) {
maxkey = maxrow;
minkey = tablePtr->rowOffset;
minkeyoff = tablePtr->rowOffset+tablePtr->titleRows;
offset = tablePtr->rowOffset;
tagTblPtr = tablePtr->rowStyles;
dimTblPtr = tablePtr->rowHeights;
dimPtr = &(tablePtr->rows);
lo = tablePtr->colOffset
+ ((flags & HOLD_TITLES) ? tablePtr->titleCols : 0);
hi = maxcol;
} else {
maxkey = maxcol;
minkey = tablePtr->colOffset;
minkeyoff = tablePtr->colOffset+tablePtr->titleCols;
offset = tablePtr->colOffset;
tagTblPtr = tablePtr->colStyles;
dimTblPtr = tablePtr->colWidths;
dimPtr = &(tablePtr->cols);
lo = tablePtr->rowOffset
+ ((flags & HOLD_TITLES) ? tablePtr->titleRows : 0);
hi = maxrow;
}
/* constrain the starting index */
if (first > maxkey) {
first = maxkey;
} else if (first < minkey) {
first = minkey;
}
if (doInsert) {
/* +count means insert after index,
* -count means insert before index */
if (count < 0) {
count = -count;
} else {
first++;
}
if ((flags & HOLD_TITLES) && (first < minkeyoff)) {
count -= minkeyoff-first;
if (count <= 0) {
return TCL_OK;
}
first = minkeyoff;
}
if (!(flags & HOLD_DIMS)) {
maxkey += count;
*dimPtr += count;
}
/*
* We need to call TableAdjustParams before TableModifyRC to
* ensure that side effect code like var traces that might get
* called will access the correct new dimensions.
*/
if (*dimPtr < 1) {
*dimPtr = 1;
}
TableAdjustParams(tablePtr);
for (i = maxkey; i >= first; i--) {
/* move row/col style && width/height here */
TableModifyRC(tablePtr, doRows, flags, tagTblPtr, dimTblPtr,
offset, i, i-count, lo, hi, ((i-count) < first));
}
if (!(flags & HOLD_WINS)) {
/*
* This may be a little severe, but it does unmap the
* windows that need to be unmapped, and those that should
* stay do remap correctly. [Bug #551325]
*/
if (doRows) {
EmbWinUnmap(tablePtr,
first - tablePtr->rowOffset,
maxkey - tablePtr->rowOffset,
lo - tablePtr->colOffset,
hi - tablePtr->colOffset);
} else {
EmbWinUnmap(tablePtr,
lo - tablePtr->rowOffset,
hi - tablePtr->rowOffset,
first - tablePtr->colOffset,
maxkey - tablePtr->colOffset);
}
}
} else {
/* (index = i && count = 1) == (index = i && count = -1) */
if (count < 0) {
/* if the count is negative, make sure that the col count will
* delete no greater than the original index */
if (first+count < minkey) {
if (first-minkey < abs(count)) {
/*
* In this case, the user is asking to delete more rows
* than exist before the minkey, so we have to shrink
* the count down to the existing rows up to index.
*/
count = first-minkey;
} else {
count += first-minkey;
}
first = minkey;
} else {
first += count;
count = -count;
}
}
if ((flags & HOLD_TITLES) && (first <= minkeyoff)) {
count -= minkeyoff-first;
if (count <= 0) {
return TCL_OK;
}
first = minkeyoff;
}
if (count > maxkey-first+1) {
count = maxkey-first+1;
}
if (!(flags & HOLD_DIMS)) {
*dimPtr -= count;
}
/*
* We need to call TableAdjustParams before TableModifyRC to
* ensure that side effect code like var traces that might get
* called will access the correct new dimensions.
*/
if (*dimPtr < 1) {
*dimPtr = 1;
}
TableAdjustParams(tablePtr);
for (i = first; i <= maxkey; i++) {
TableModifyRC(tablePtr, doRows, flags, tagTblPtr, dimTblPtr,
offset, i, i+count, lo, hi, ((i+count) > maxkey));
}
}
if (!(flags & HOLD_SEL) &&
Tcl_FirstHashEntry(tablePtr->selCells, &search) != NULL) {
/* clear selection - forceful, but effective */
Tcl_DeleteHashTable(tablePtr->selCells);
Tcl_InitHashTable(tablePtr->selCells, TCL_STRING_KEYS);
}
/*
* Make sure that the modified dimension is actually legal
* after removing all that stuff.
*/
if (*dimPtr < 1) {
*dimPtr = 1;
TableAdjustParams(tablePtr);
}
/* change the geometry */
TableGeometryRequest(tablePtr);
/* FIX:
* This has to handle when the previous rows/cols resize because
* of the *stretchmode. InvalidateAll does that, but could be
* more efficient.
*/
TableInvalidateAll(tablePtr, 0);
break;
}
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* TableDeleteChars --
* Remove one or more characters from an table widget.
*
* Results:
* None.
*
* Side effects:
* Memory gets freed, the table gets modified and (eventually)
* redisplayed.
*
*----------------------------------------------------------------------
*/
void
TableDeleteChars(tablePtr, index, count)
register Table *tablePtr; /* Table widget to modify. */
int index; /* Index of first character to delete. */
int count; /* How many characters to delete. */
{
#ifdef TCL_UTF_MAX
int byteIndex, byteCount, newByteCount, numBytes, numChars;
char *new, *string;
string = tablePtr->activeBuf;
numBytes = strlen(string);
numChars = Tcl_NumUtfChars(string, numBytes);
if ((index + count) > numChars) {
count = numChars - index;
}
if (count <= 0) {
return;
}
byteIndex = Tcl_UtfAtIndex(string, index) - string;
byteCount = Tcl_UtfAtIndex(string + byteIndex, count)
- (string + byteIndex);
newByteCount = numBytes + 1 - byteCount;
new = (char *) ckalloc((unsigned) newByteCount);
memcpy(new, string, (size_t) byteIndex);
strcpy(new + byteIndex, string + byteIndex + byteCount);
#else
int oldlen;
char *new;
/* this gets the length of the string, as well as ensuring that
* the cursor isn't beyond the end char */
TableGetIcursor(tablePtr, "end", &oldlen);
if ((index+count) > oldlen)
count = oldlen-index;
if (count <= 0)
return;
new = (char *) ckalloc((unsigned)(oldlen-count+1));
strncpy(new, tablePtr->activeBuf, (size_t) index);
strcpy(new+index, tablePtr->activeBuf+index+count);
/* make sure this string is null terminated */
new[oldlen-count] = '\0';
#endif
/* This prevents deletes on BREAK or validation error. */
if (tablePtr->validate &&
TableValidateChange(tablePtr, tablePtr->activeRow+tablePtr->rowOffset,
tablePtr->activeCol+tablePtr->colOffset,
tablePtr->activeBuf, new, index) != TCL_OK) {
ckfree(new);
return;
}
ckfree(tablePtr->activeBuf);
tablePtr->activeBuf = new;
/* mark the text as changed */
tablePtr->flags |= TEXT_CHANGED;
if (tablePtr->icursor >= index) {
if (tablePtr->icursor >= (index+count)) {
tablePtr->icursor -= count;
} else {
tablePtr->icursor = index;
}
}
TableSetActiveIndex(tablePtr);
TableRefresh(tablePtr, tablePtr->activeRow, tablePtr->activeCol, CELL);
}
/*
*----------------------------------------------------------------------
*
* TableInsertChars --
* Add new characters to the active cell of a table widget.
*
* Results:
* None.
*
* Side effects:
* New information gets added to tablePtr; it will be redisplayed
* soon, but not necessarily immediately.
*
*----------------------------------------------------------------------
*/
void
TableInsertChars(tablePtr, index, value)
register Table *tablePtr; /* Table that is to get the new elements. */
int index; /* Add the new elements before this element. */
char *value; /* New characters to add (NULL-terminated
* string). */
{
#ifdef TCL_UTF_MAX
int oldlen, byteIndex, byteCount;
char *new, *string;
byteCount = strlen(value);
if (byteCount == 0) {
return;
}
/* Is this an autoclear and this is the first update */
/* Note that this clears without validating */
if (tablePtr->autoClear && !(tablePtr->flags & TEXT_CHANGED)) {
/* set the buffer to be empty */
tablePtr->activeBuf = (char *)ckrealloc(tablePtr->activeBuf, 1);
tablePtr->activeBuf[0] = '\0';
/* the insert position now has to be 0 */
index = 0;
tablePtr->icursor = 0;
}
string = tablePtr->activeBuf;
byteIndex = Tcl_UtfAtIndex(string, index) - string;
oldlen = strlen(string);
new = (char *) ckalloc((unsigned)(oldlen + byteCount + 1));
memcpy(new, string, (size_t) byteIndex);
strcpy(new + byteIndex, value);
strcpy(new + byteIndex + byteCount, string + byteIndex);
/* validate potential new active buffer */
/* This prevents inserts on either BREAK or validation error. */
if (tablePtr->validate &&
TableValidateChange(tablePtr, tablePtr->activeRow+tablePtr->rowOffset,
tablePtr->activeCol+tablePtr->colOffset,
tablePtr->activeBuf, new, byteIndex) != TCL_OK) {
ckfree(new);
return;
}
/*
* The following construction is used because inserting improperly
* formed UTF-8 sequences between other improperly formed UTF-8
* sequences could result in actually forming valid UTF-8 sequences;
* the number of characters added may not be Tcl_NumUtfChars(string, -1),
* because of context. The actual number of characters added is how
* many characters were are in the string now minus the number that
* used to be there.
*/
if (tablePtr->icursor >= index) {
tablePtr->icursor += Tcl_NumUtfChars(new, oldlen+byteCount)
- Tcl_NumUtfChars(tablePtr->activeBuf, oldlen);
}
ckfree(string);
tablePtr->activeBuf = new;
#else
int oldlen, newlen;
char *new;
newlen = strlen(value);
if (newlen == 0) return;
/* Is this an autoclear and this is the first update */
/* Note that this clears without validating */
if (tablePtr->autoClear && !(tablePtr->flags & TEXT_CHANGED)) {
/* set the buffer to be empty */
tablePtr->activeBuf = (char *)ckrealloc(tablePtr->activeBuf, 1);
tablePtr->activeBuf[0] = '\0';
/* the insert position now has to be 0 */
index = 0;
}
oldlen = strlen(tablePtr->activeBuf);
/* get the buffer to at least the right length */
new = (char *) ckalloc((unsigned)(oldlen+newlen+1));
strncpy(new, tablePtr->activeBuf, (size_t) index);
strcpy(new+index, value);
strcpy(new+index+newlen, (tablePtr->activeBuf)+index);
/* make sure this string is null terminated */
new[oldlen+newlen] = '\0';
/* validate potential new active buffer */
/* This prevents inserts on either BREAK or validation error. */
if (tablePtr->validate &&
TableValidateChange(tablePtr, tablePtr->activeRow+tablePtr->rowOffset,
tablePtr->activeCol+tablePtr->colOffset,
tablePtr->activeBuf, new, index) != TCL_OK) {
ckfree(new);
return;
}
ckfree(tablePtr->activeBuf);
tablePtr->activeBuf = new;
if (tablePtr->icursor >= index) {
tablePtr->icursor += newlen;
}
#endif
/* mark the text as changed */
tablePtr->flags |= TEXT_CHANGED;
TableSetActiveIndex(tablePtr);
TableRefresh(tablePtr, tablePtr->activeRow, tablePtr->activeCol, CELL);
}
/*
*----------------------------------------------------------------------
*
* TableModifyRC --
* Helper function that does the core work of moving rows/cols
* and associated tags.
*
* Results:
* None.
*
* Side effects:
* Moves cell data and possibly tag data
*
*----------------------------------------------------------------------
*/
static void
TableModifyRC(tablePtr, doRows, flags, tagTblPtr, dimTblPtr,
offset, from, to, lo, hi, outOfBounds)
Table *tablePtr; /* Information about text widget. */
int doRows; /* rows (1) or cols (0) */
int flags; /* flags indicating what to move */
Tcl_HashTable *tagTblPtr, *dimTblPtr; /* Pointers to the row/col tags
* and width/height tags */
int offset; /* appropriate offset */
int from, to; /* the from and to row/col */
int lo, hi; /* the lo and hi col/row */
int outOfBounds; /* the boundary check for shifting items */
{
int j, new;
char buf[INDEX_BUFSIZE], buf1[INDEX_BUFSIZE];
Tcl_HashEntry *entryPtr, *newPtr;
TableEmbWindow *ewPtr;
/*
* move row/col style && width/height here
* If -holdtags is specified, we don't move the user-set widths/heights
* of the absolute rows/columns, otherwise we enter here to move the
* dimensions appropriately
*/
if (!(flags & HOLD_TAGS)) {
entryPtr = Tcl_FindHashEntry(tagTblPtr, (char *)from);
if (entryPtr != NULL) {
Tcl_DeleteHashEntry(entryPtr);
}
entryPtr = Tcl_FindHashEntry(dimTblPtr, (char *)from-offset);
if (entryPtr != NULL) {
Tcl_DeleteHashEntry(entryPtr);
}
if (!outOfBounds) {
entryPtr = Tcl_FindHashEntry(tagTblPtr, (char *)to);
if (entryPtr != NULL) {
newPtr = Tcl_CreateHashEntry(tagTblPtr, (char *)from, &new);
Tcl_SetHashValue(newPtr, Tcl_GetHashValue(entryPtr));
Tcl_DeleteHashEntry(entryPtr);
}
entryPtr = Tcl_FindHashEntry(dimTblPtr, (char *)to-offset);
if (entryPtr != NULL) {
newPtr = Tcl_CreateHashEntry(dimTblPtr, (char *)from-offset,
&new);
Tcl_SetHashValue(newPtr, Tcl_GetHashValue(entryPtr));
Tcl_DeleteHashEntry(entryPtr);
}
}
}
for (j = lo; j <= hi; j++) {
if (doRows /* rows */) {
TableMakeArrayIndex(from, j, buf);
TableMakeArrayIndex(to, j, buf1);
TableMoveCellValue(tablePtr, to, j, buf1, from, j, buf,
outOfBounds);
} else {
TableMakeArrayIndex(j, from, buf);
TableMakeArrayIndex(j, to, buf1);
TableMoveCellValue(tablePtr, j, to, buf1, j, from, buf,
outOfBounds);
}
/*
* If -holdselection is specified, we leave the selected cells in the
* absolute cell values, otherwise we enter here to move the
* selection appropriately
*/
if (!(flags & HOLD_SEL)) {
entryPtr = Tcl_FindHashEntry(tablePtr->selCells, buf);
if (entryPtr != NULL) {
Tcl_DeleteHashEntry(entryPtr);
}
if (!outOfBounds) {
entryPtr = Tcl_FindHashEntry(tablePtr->selCells, buf1);
if (entryPtr != NULL) {
Tcl_CreateHashEntry(tablePtr->selCells, buf, &new);
Tcl_DeleteHashEntry(entryPtr);
}
}
}
/*
* If -holdtags is specified, we leave the tags in the
* absolute cell values, otherwise we enter here to move the
* tags appropriately
*/
if (!(flags & HOLD_TAGS)) {
entryPtr = Tcl_FindHashEntry(tablePtr->cellStyles, buf);
if (entryPtr != NULL) {
Tcl_DeleteHashEntry(entryPtr);
}
if (!outOfBounds) {
entryPtr = Tcl_FindHashEntry(tablePtr->cellStyles, buf1);
if (entryPtr != NULL) {
newPtr = Tcl_CreateHashEntry(tablePtr->cellStyles, buf,
&new);
Tcl_SetHashValue(newPtr, Tcl_GetHashValue(entryPtr));
Tcl_DeleteHashEntry(entryPtr);
}
}
}
/*
* If -holdwindows is specified, we leave the windows in the
* absolute cell values, otherwise we enter here to move the
* windows appropriately
*/
if (!(flags & HOLD_WINS)) {
/*
* Delete whatever window might be in our destination
*/
Table_WinDelete(tablePtr, buf);
if (!outOfBounds) {
/*
* buf1 is where the window is
* buf is where we want it to be
*
* This is an adaptation of Table_WinMove, which we can't
* use because we are intermediately fiddling with boundaries
*/
entryPtr = Tcl_FindHashEntry(tablePtr->winTable, buf1);
if (entryPtr != NULL) {
/*
* If there was a window in our source,
* get the window pointer to move it
*/
ewPtr = (TableEmbWindow *) Tcl_GetHashValue(entryPtr);
/* and free the old hash table entry */
Tcl_DeleteHashEntry(entryPtr);
entryPtr = Tcl_CreateHashEntry(tablePtr->winTable, buf,
&new);
/*
* We needn't check if a window was in buf, since the
* Table_WinDelete above should guarantee that no window
* is there. Just set the new entry's value.
*/
Tcl_SetHashValue(entryPtr, (ClientData) ewPtr);
ewPtr->hPtr = entryPtr;
}
}
}
}
}
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