void
StopPV (Widget w, XEvent * event, String * params, Cardinal * nParams)
{ // [HGM] pv: on right-button release, stop displaying PV
XawTextUnsetSelection( w );
highTextStart[currentPV] = highTextEnd[currentPV] = 0;
UnLoadPV();
}
/*******************************************************************************
Name: CompletionEditCallback
Description: Called when Completion is selected form File menu
in the editor.
Arguments: w - menu item that was selected
client_data - dialog window or edit window
call_data - not used
Returns: None
*******************************************************************************/
void CompletionEditCallback(
Widget w,
XtPointer client_data,
XtPointer call_data)
{
int NumberOfMatches,i,length;
Boolean tempFlag;
struct symbolMatch *matches;
extern char* GetCommandString();
XawTextBlock text;
char *matchString = NULL;
Widget source = XawTextGetSource((Widget)client_data);
XawTextPosition CurrentPosition,EndPosition;
/* ================================================== */
/* Free the memory of completionString before assign */
/* it to the new string. */
/* ================================================== */
if(completionString != NULL)
{
free(completionString);
completionString = NULL;
}
/* =================================================== */
/* Get the beginning and ending positions of the */
/* selection. If there is no selection get the last */
/* word from the cursor. */
/* ====================================================*/
XawTextGetSelectionPos((Widget)client_data,&CurrentPosition,&EndPosition);
if(CurrentPosition == EndPosition) /* No selection was made */
{
matchString = GetBufferFromTextEdit((Widget)client_data);
length = strlen(matchString);
}
else
{
XawTextSourceRead(source,CurrentPosition,&text,EndPosition - CurrentPosition);
XawTextUnsetSelection((Widget)client_data);
XawTextSetInsertionPoint((Widget)client_data,EndPosition);
matchString = text.ptr;
length = text.length;
}
/* ======================================= */
/* Determine if the word can be matched. */
/* ======================================= */
matchString = GetCommandCompletionString(matchString,length);
if(matchString == NULL)
{
XBell(XtDisplay(toplevel),100);
return;
}
completionString = (char*)malloc(strlen(matchString) + 1);
strcpy(completionString,matchString);
matches = FindSymbolMatches(completionString,&NumberOfMatches,NULL);
if(NumberOfMatches == 0)
{
XBell(XtDisplay(toplevel),100);
return;
}
else if (NumberOfMatches == 1)
{
length = strlen(completionString);
text.firstPos = 0;
text.length = strlen(&(matches->match->contents[length]));
text.ptr = &(matches->match->contents[length]);
XawTextReplace((Widget)client_data,
XawTextGetInsertionPoint((Widget)client_data),
XawTextGetInsertionPoint((Widget)client_data),&text);
XawTextSetInsertionPoint((Widget)client_data,
XawTextGetInsertionPoint((Widget)client_data) + text.length);
}
else
{
DisplayMatchedList((Widget)client_data,matches);
}
}
