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/*
* - Check that SaveFile puts correct initial name in.
* - Make sure that filename gets initialized properly in all cases.
*/
/*
* TransEdit.c version 3.05 - TransSkel plug-in module supporting an
* arbitrary number of generic edit windows. Each window may be
* bound to a file.
*
* *** Requires FakeAlert.c for proper linking! ***
*
* TransSkel and TransEdit are public domain. For more information,
* contact:
*
* Paul DuBois
* Wisconsin Regional Primate Research Center
* 1220 Capitol Court
* Madison, WI 53715-1299 USA
*
* Internet: dubois@primate.wisc.edu
*
*
* This version of TransEdit is written for THINK C 6.0.
* THINK C is a trademark of:
*
* Symantec Corporation
* 10201 Torre Avenue
* Cupertino, CA 95014 USA
*
* History
* 08/25/86 Genesis. Beta version.
* 09/15/86
* - Changed to allow arbitrary number of windows.
*
* 11/04/86 Release 1.0
* - Added conditional stuff to allow compilation in single- or
* multiple-window mode.
*
* 01/17/87 Release 1.01
* - The window type when a new window is created is documentProc+8
* now, so that the window will have a zoom box on a machine with
* 128K ROMS. Default file name in SaveFile() is initialized after
* SyncAllGlobals() - fixing bug found by Owen Hartnett.
*
* 01/29/89 Release 2.0
* - Converted to work with TransSkel 2.0. 2-byte and
* 4-byte integer types are typedef'ed to Integer and LongInt to
* ease porting. Added SystemEdit() check to Edit menu handler.
*
* 16 Jun 92 Release 3.01
* - Ported for TransSkel 3.00. Basically this amounted to adding
* function prototypes.
* - Use real curly quotes in FakeAlert() messages.
*
* 05 Jun 93 Release 3.02
* - Conversion for THINK C 6.0.
*
* 08 Jun 93 Release 3.03
* - Took out all the stuff to allow compiling to handle only a single
* edit window. The savings in bytes of object code is no longer worth
* the extra source code complexity. It's also unnecessary because I no longer
* maintain a window list, since I ...
* - Reimplemented linked list holding edit window data using TransSkel's
* window property functions (new in TS 3.00). The property type is
* skelWPropEditWind, and the data value is a handle to the window data
* structure.
* - Took out all the "register" declarations. The compiler's smart enough
* now that they don't make any difference, so they're just clutter.
* 05 Jul 93
* - Redid FakeAlert() calls to correspond better to new button positioning.
* (See FakeAlert.c remarks.)
* - Fixed Activate() and Update() so that when a window goes inactive,
* the scroll bar is hidden (and only the frame drawn). Previously, the
* scroll bar was just made inactive, which doesn't quite conform to the user
* interface guidelines.
* 18 Dec 93
* - Untitled windows have "untitled" rather than "Untitled" in title bar,
* and first untitled window isn't given a number, in accordance with Apple
* guidelines.
* - Replaced SFGetFile()/SFPutFile() with SFPGetFil()/SFPPutFile() so can
* use SkelDlogFilter().
* 21 Dec 93
* - Use color grafports when available.
* 04 Jan 94
* - Undid Integer/LongInt type stuff back to short/long.
*
* 18 Jan 94 Release 3.04
* - FakeAlert() code revamped. See FakeAlert.c.
* 19 Jan 94
* - Window creation routines do better checks for allocation failures.
* - Much rewriting to eliminate many global variables. No more SyncGlobals().
* 20 Jan 94
* - Fixed bug with missing SkelRmveDlogFilter() after SFPGetFile() call.
* 23 Jan 94
* - Fixed bug in EWindowEditOp(); edit window doesn't need to be marked dirty
* for Copy operation.
*
* 21 Feb 94 Release 3.05
* - Updated for TransSkel 3.11.
* - Converted interface to be Pascal-compatible.
*/
# include "TransSkel1.h"
# include "TransEdit1.h"
# define normalHilite 0
# define dimHilite 255
/*
* Maximum size of file we'll attempt to read. The value leaves
* a little cushion against the TextEdit limit of 32767.
*/
# define maxFileSize 32000
# define WindowIsActive(w) ((WindowPeek) (w))->hilited
/*
* New(TypeName) returns handle to new object, for any TypeName.
* If there is insufficient memory, the result is nil.
*/
# define New(type) (type **) NewHandle ((Size) sizeof (type))
# define enter 3
# define cr 13
typedef enum /* Edit menu item numbers */
{
undo = 1,
/* --- */
cut = 3,
copy,
paste,
clear /* (it's ok if the host doesn't have this item) */
};
/*
* Default values for edit window text display characteristics
* and event notification procedures. Used when new edit windows
* are created.
*/
static short e_font = kFontIDMonaco; /* default font */
static short e_size = 9; /* default pointsize */
static short e_style = normal; /* default style -- L. Tierney */
static short e_wrap = 0; /* default word wrap (on) */
static short e_just = teJustLeft; /* default justification */
static TEditKeyProcPtr e_key = nil; /* default key procedure */
static TEditActivateProcPtr e_activate = nil; /* default activation procedure */
static TEditCloseProcPtr e_close = nil; /* default close procedure */
static TEditCloseProcPtr e_idle = nil; /* default idle procedure -- L. Tierney */
/*
* Edit window document record. A handle to a window's document
* record is stored in the window's property list.
*/
typedef struct DocRecord DocRecord, *DocPtr, **DocHandle;
struct DocRecord
{
WindowPtr editWind; /* the edit window */
Boolean bound; /* whether window is bound to file */
SFReply editFile; /* file it's bound to, if bound true */
TEHandle editTE; /* window text */
Boolean dirty; /* whether text modified since save */
ControlHandle eScroll; /* scroll bar */
short visLines; /* # lines visible in window, max */
TEditKeyProcPtr eKey; /* key click notifier */
TEditActivateProcPtr eActivate; /* activate event notifier */
TEditCloseProcPtr eClose; /* close notifier */
TEditIdleProcPtr eIdle; /* idle action -- L. Tierney */
};
/*
* Macros for accessing parts of a document record, given a document
* handle.
*/
# define DocWind(doc) ((**doc).editWind)
# define DocBound(doc) ((**doc).bound)
# define DocFile(doc) ((**doc).editFile)
# define DocTE(doc) ((**doc).editTE)
# define DocDirty(doc) ((**doc).dirty)
# define DocScroll(doc) ((**doc).eScroll)
# define DocVisLines(doc) ((**doc).visLines)
# define DocKeyProc(doc) ((**doc).eKey)
# define DocActivateProc(doc) ((**doc).eActivate)
# define DocCloseProc(doc) ((**doc).eClose)
# define DocIdleProc(doc) ((**doc).eIdle) /* L. Tierney */
static Point dlogWhere = { 70, 100 }; /* GetFile/PutFile location */
static OSType creator = 'TEDT'; /* default file creator */
static RgnHandle clipRgn = (RgnHandle) nil;
/* -------------------------------------------------------------------- */
/* Miscellaneous Internal (private) Routines */
/* -------------------------------------------------------------------- */
static void
ErrMesg (StringPtr s)
{
(void) FakeAlert (s, "\p", "\p", "\p", 1, 1, 0, "\pOK", "\p", "\p");
}
/*
* Save and restore the current window's clip region
*/
static void
SaveClipRgn (void)
{
clipRgn = NewRgn ();
GetClip (clipRgn);
}
static void
RestoreClipRgn (void)
{
SetClip (clipRgn);
DisposeRgn (clipRgn);
}
/*
* Draw grow box in lower right hand corner of window.
*/
static void
DrawGrowBox (WindowPtr w)
{
Rect r;
SaveClipRgn ();
r = w->portRect;
r.left = r.right - 15; /* draw only in corner */
r.top = r.bottom - 15;
ClipRect (&r);
DrawGrowIcon (w);
RestoreClipRgn ();
}
/*
* Generate title for new untitled document. First one is
* unnumbered, others are numbered.
*/
static void
Untitled (StringPtr name)
{
static long num = 0;
Str255 numBuf;
BlockMove ("\puntitled", name, 9L);
if (++num > 1)
{
name[++name[0]] = ' ';
NumToString (num, numBuf);
BlockMove (&numBuf[1], &name[name[0]+1], (long) numBuf[0]);
name[0] += numBuf[0];
}
}
/* -------------------------------------------------------------------- */
/* Lowest-level Internal (Private) Edit Window Routines */
/* -------------------------------------------------------------------- */
/*
* Get document handle associated with edit window.
* Return nil if window isn't a known edit window.
*/
static DocHandle
WindDocHandle (WindowPtr w)
{
SkelWindPropHandle ph;
DocHandle doc = (DocHandle) nil;
if (w != (WindowPtr) nil)
{
ph = SkelGetWindProp (w, skelWPropEditWind);
if (ph != (SkelWindPropHandle) nil)
doc = (DocHandle) (**ph).skelWPropData;
}
return (doc);
}
/* -------------------------------------------------------------------- */
/* Internal (private) Display Routines */
/* -------------------------------------------------------------------- */
/*
* Calculate the dimensions of the editing rectangle for a window
* (which is assumed to be the current port). (The viewRect and
* destRect are the same size.) Assumes the port, text font and
* text size are all set properly. The viewRect is sized so that
* an integral number of lines can be displayed in it, i.e., so that
* a partial line never shows at the bottom. If that's not done,
* funny things can happen to the caret.
*/
static void
CalcEditRect (WindowPtr w, Rect *r)
{
FontInfo f;
short lineHeight;
GetFontInfo (&f);
lineHeight = f.ascent + f.descent + f.leading;
*r = w->portRect;
r->left += 4;
r->right -= 17; /* leave room for scroll bar + 2 */
r->top += 2;
r->bottom = r->top + ((r->bottom - r->top - 2) / lineHeight) * lineHeight;
}
/*
* Calculate the dimensions of the scroll bar rectangle for a
* window. Make sure that the edges overlap the window frame and
* the grow box.
*/
static void
CalcScrollRect (WindowPtr w, Rect *r)
{
*r = w->portRect;
++r->right;
--r->top;
r->left = r->right - 16;
r->bottom -= 14;
}
/*
* Return true if the mouse is in the non-scrollbar part of an
* edit window.
*/
static Boolean
PtInText (WindowPtr w, Point pt)
{
Rect r;
r = w->portRect;
r.right -= 15;
return (PtInRect (pt, &r));
}
/*
* Set the cursor appropriately. If theCursor == iBeamCursor, check
* that it's really in the text area of an edit window (and if not
* set the cursor to an arrow instead). Otherwise, set the cursor
* to the given type (usually a watch).
*
* Pass -1 for theCursor to set the cursor to the arrow.
*/
static void
FixCursor (short theCursor)
{
WindowPtr w;
GrafPtr savePort;
Point pt;
if (theCursor == iBeamCursor) /* check whether there's an edit */
{ /* window in front and if so, */
theCursor = -1; /* whether the cursor's in its */
w = FrontWindow (); /* text area */
if (IsEWindow (w))
{
GetPort (&savePort);
SetPort (w);
GetMouse (&pt);
if (PtInText (w, pt))
theCursor = iBeamCursor;
SetPort (savePort);
}
}
SetCursor (theCursor == -1 ? &arrow : *GetCursor (theCursor));
}
/*
* Calculate the number of lines currently scrolled off
* the top of an edit record.
*/
static short
LinesOffTop (TEHandle hTE)
{
return (((**hTE).viewRect.top - (**hTE).destRect.top) / (**hTE).lineHeight);
}
/*
* Return the line number that the caret (or the beginning of
* the currently selected text) is in. Value returned is in
* the range 0..(**editTE).nLines. If = (**editTE).nLines, the
* caret is past the last line. The only special case to watch out
* for is when the caret is at the very end of the text. If the
* last character is not a carriage return, then the caret is on
* the (nLines-1)th line, not the (nLines)th line.
*
* (This really should do a binary search for speed.)
*/
static short
LineWithCaret (TEHandle hTE)
{
short i;
short nLines;
short teLength;
short selStart;
short lineStart;
selStart = (**hTE).selStart;
nLines = (**hTE).nLines;
teLength = (**hTE).teLength;
if (selStart == teLength)
{
if (teLength != 0 && (*((**hTE).hText))[teLength-1] != cr)
return (nLines - 1);
return (nLines);
}
for (i = 0; /* empty */; ++i)
{
if ((lineStart = (**hTE).lineStarts[i]) >= selStart)
{
if (lineStart != selStart)
--i;
return (i);
}
}
}
/*
* Return the number of the last displayable line. That's one
* more than nLines if the text is empty or the last character
* is a carriage return.
*/
static short
LastLine (TEHandle hTE)
{
short nLines;
short teLength;
nLines = (**hTE).nLines;
teLength = (**hTE).teLength;
if (teLength == 0 || (*((**hTE).hText))[teLength-1] == cr)
nLines++;
return (nLines);
}
/*
* Highlight the scroll bar properly. This means that it's not
* made active if the window itself isn't active, even if
* there's enough text to fill the window.
*/
static void
HiliteScroll (DocHandle doc)
{
WindowPtr w;
ControlHandle scroll;
short hilite;
w = DocWind (doc);
scroll = DocScroll (doc);
hilite = (WindowIsActive (w) && GetControlMaximum (scroll) > 0
? normalHilite : dimHilite);
HiliteControl (scroll, hilite);
}
/*
* Set scroll bar current value (but only if it's different than
* the current value, to avoid needless flashing).
*/
static void
SetScrollValue (ControlHandle scroll, short value)
{
if (GetControlValue (scroll) != value)
SetControlValue (scroll, value);
}
/*
* Set the maximum value of the scroll bar. It's set so that if
* there's more text than fits in the window, the bottom line can
* be scrolled up at least a little below the bottom of the window.
*
* The shenanigans with topLines and scrollableLines have to do with
* the case where there may be less text than fills the window, but
* most of it's scrolled off the top. This can happen when you
* scroll a bunch of stuff up, then delete everything visible in
* the window.
*/
static void
SetScrollMax (DocHandle doc)
{
ControlHandle scroll;
TEHandle hTE;
short topLines;
short scrollableLines;
short max;
scroll = DocScroll (doc);
hTE = DocTE (doc);
topLines = LinesOffTop (hTE);
scrollableLines = LastLine (hTE) - DocVisLines (doc);;
max = (topLines > scrollableLines ? topLines : scrollableLines);
if (max < 0)
max = 0;
if (max != GetControlMaximum (scroll))
{
SetControlMaximum (scroll, max);
HiliteScroll (doc);
}
}
/*
* Scroll to the correct position. lDelta is the
* amount to CHANGE the current scroll setting by.
* Positive scrolls the text up, negative down.
*/
static void
ScrollText (DocHandle doc, short lDelta)
{
ControlHandle scroll;
TEHandle hTE;
short topVisLine;
short newTopVisLine;
scroll = DocScroll (doc);
hTE = DocTE (doc);
topVisLine = LinesOffTop (hTE);
newTopVisLine = topVisLine + lDelta;
if (newTopVisLine < 0) /* clip to range */
newTopVisLine = 0;
if (newTopVisLine > GetControlMaximum (scroll))
newTopVisLine = GetControlMaximum (scroll);
SetScrollValue (scroll, newTopVisLine);
TEScroll (0, (topVisLine - newTopVisLine ) * (**hTE).lineHeight, hTE);
}
/*
* Scroll to home position without redrawing.
*/
static void
ScrollToHome (TEHandle hTE)
{
Rect r;
r = (**hTE).destRect;
OffsetRect (&r, 0, 2 - r.top);
(**hTE).destRect = r;
}
/*
* ClikLoop proc for autoscrolling text when the mouse is dragged out
* of the text view rectangle.
*
* The clipping region has to be set to include the scroll bar,
* because whenever this proc is called, TextEdit has the region set
* to the view rectangle - if it's not reset, changes to the scroll
* bar won't show up!
*
* AutoScroll() uses scrollDoc, which must be set in Mouse() before
* calling TEClick(), which calls AutoScroll().
*/
static DocHandle scrollDoc;
static short scrollPart;
static pascal Boolean
AutoScroll (void)
{
WindowPtr w;
TEHandle hTE;
Point p;
Rect r;
w = DocWind (scrollDoc);
hTE = DocTE (scrollDoc);
SaveClipRgn ();
ClipRect (&w->portRect);
GetMouse (&p);
r = (**hTE).viewRect;
if (p.v < r.top)
ScrollText (scrollDoc, -1); /* back one line */
else if (p.v > r.bottom)
ScrollText (scrollDoc, 1); /* forward one line */
RestoreClipRgn ();
return (true); /* true = 'keep tracking mouse' */
}
/*
* Filter proc for tracking mousedown in scroll bar.
*
* I suspect odd scrolling may occur for hits in paging regions if
* the window is allowed to size such that less than two lines show.
*
* TrackScroll() uses scrollDoc and scrollPart, which must be set in
* Mouse() before calling TrackControl(), which calls TrackScroll().
* scrollPart is the original part code in which the mousedown occurred.
*/
static pascal void
TrackScroll (ControlHandle theScroll, short partCode)
{
short lDelta;
short visLines = DocVisLines (scrollDoc);
if (partCode == scrollPart) /* still in same part? */
{
switch (partCode)
{
case kControlUpButtonPart: lDelta = -1; break;
case kControlDownButtonPart: lDelta = 1; break;
case kControlPageUpPart: lDelta = -(visLines - 1); break;
case kControlPageDownPart: lDelta = visLines - 1; break;
}
ScrollText (scrollDoc, lDelta);
}
}
/*
* Set the scroll bar properly and adjust the text in the
* window so that the line containing the caret is visible.
* If the line with the caret is more than a line outside of
* the viewRect, try to place it in the middle of the window.
*
* Yes, it is necessary to call SetScrollMax() at the end.
*/
static void
AdjustDisplay (DocHandle doc)
{
ControlHandle scroll;
TEHandle hTE;
short visLines;
short caretLine;
short topVisLine;
short d;
scroll = DocScroll (doc);
hTE = DocTE (doc);
visLines = DocVisLines (doc);
SetScrollMax (doc);
caretLine = LineWithCaret (hTE);
topVisLine = LinesOffTop (hTE);
if ((d = caretLine - topVisLine) < 0)
ScrollText (doc, d == -1 ? -1 : d - visLines / 2);
else if (( d = caretLine - (topVisLine + visLines - 1)) > 0)
ScrollText (doc, d == 1 ? 1 : d + visLines / 2);
else
SetScrollValue (scroll, topVisLine);
SetScrollMax (doc); /* might have changed from scrolling */
}
/*
* Overhaul the entire display. This is called after catastrophic
* events, such as resizing the window, or changes to the word
* wrap style. It makes sure the view and destination rectangles
* are sized properly, and that the bottom line of text never
* scrolls up past the bottom line of the window (if there's
* enough to fill the window), and that the scroll bar max and
* current values are set properly.
*
* Resizing the dest rect just means resetting the right edge
* (the top is NOT reset), since text might be scrolled off the
* top (i.e., destRect.top != 0).
*
* Doesn't redraw the control, though!
*/
static void
OverhaulDisplay (DocHandle doc, Boolean showCaret, Boolean recalc)
{
TEHandle hTE;
Rect r;
hTE = DocTE (doc);
r = (**hTE).viewRect; /* erase current viewRect */
EraseRect (&r);
CalcEditRect (DocWind (doc), &r); /* calculate new viewRect */
(**hTE).destRect.right = r.right;
(**hTE).viewRect = r;
if (recalc)
TECalText (hTE); /* recalculate line starts */
DocVisLines (doc) = (r.bottom - r.top) / (**hTE).lineHeight;
/*
* If there is text, but none of it is visible in the window
* (it's all scrolled off the top), pull some down.
*/
if (showCaret)
AdjustDisplay (doc);
else
SetScrollMax (doc);
TEUpdate (&r, hTE);
}
/* ---------------------------------------------------------------- */
/* Window Handler Routines */
/* ---------------------------------------------------------------- */
/*
* Handle mouse clicks in window. The viewRect is never tested
* directly, because if it were, clicks along the top, left and
* bottom edges of the window wouldn't register.
*/
static ControlActionUPP TrackScrollUPP = NULL;
static pascal void
Mouse (Point thePt, long t, short mods)
{
WindowPtr w;
DocHandle doc;
ControlHandle scroll;
short thePart;
short oldCtlValue;
GetPort (&w);
doc = WindDocHandle (w);
scroll = DocScroll (doc);
if ((thePart = TestControl (scroll, thePt)) == kControlIndicatorPart)
{
oldCtlValue = GetControlValue (scroll);
if (TrackControl (scroll, thePt, nil) == kControlIndicatorPart)
ScrollText (doc, GetControlValue (scroll) - oldCtlValue);
}
else if (thePart != 0)
{
scrollDoc = doc; /* set globals for TrackScroll */
scrollPart = thePart;
if (! TrackScrollUPP)
TrackScrollUPP = NewControlActionProc((ProcPtr) TrackScroll);
(void) TrackControl (scroll, thePt, TrackScrollUPP);
}
else if (PtInText (w, thePt))
{
scrollDoc = doc; /* set global for AutoScroll */
TEClick (thePt, (mods & shiftKey) != 0, DocTE (doc));
}
SetScrollMax (doc);
}
/*
* Handle key clicks in window
*/
static pascal void
Key (short c, short code, short mods)
{
WindowPtr w;
DocHandle doc;
w = FrontWindow(); /* changed from GetPort (&w) -- L. Tierney */
doc = WindDocHandle (w);
if (c != enter)
TEKey (c, DocTE (doc));
AdjustDisplay (doc);
DocDirty (doc) = true;
if (DocKeyProc (doc) != nil) /* report event to the host */
(*DocKeyProc (doc)) ();
}
/*
* Update window. The update event might be in response to a
* window resizing. If so, move and resize the scroll bar,
* and recalculate the text display.
*
* The ValidRect call is done because the HideControl adds the
* control bounds box to the update region - which would generate
* another update event! Since everything is redrawn below anyway,
* the ValidRect is used to cancel the update.
*/
static pascal void
Update (Boolean resized)
{
WindowPtr w;
DocHandle doc;
ControlHandle scroll;
TEHandle hTE;
Rect r;
GetPort (&w);
doc = WindDocHandle (w);
scroll = DocScroll (doc);
hTE = DocTE (doc);
if (resized)
{
r = w->portRect;
EraseRect (&r);
HideControl (scroll);
r = (**scroll).contrlRect;
ValidRect (&r);
CalcScrollRect (w, &r);
SizeControl (scroll, 16, r.bottom - r.top);
MoveControl (scroll, r.left, r.top);
OverhaulDisplay (doc, false, (**hTE).crOnly >= 0);
ShowControl (scroll);
}
else
{
OverhaulDisplay (doc, false, false);
if (WindowIsActive (w))
DrawControls (w); /* redraw scroll bar */
else
{
/* draw outline of scroll, erase interior */
r = (**scroll).contrlRect;
FrameRect (&r);
InsetRect (&r, 1, 1);
EraseRect (&r);
}
}
DrawGrowBox (w);
}
/*
* When the window comes active, highlight the scroll bar appropriately.
* When the window is deactivated, hide the scroll bar (this is drawn
* immediately rather than invalidating the rectangle and waiting for
* Update(), because that just seems too slow).
*
* Redraw the grow box in any case. Set the cursor (FixCursor avoids
* changing it from an ibeam to an arrow back to an ibeam, in the case
* where one edit window is going inactive and another is coming
* active).
*
* Report the event to the host.
*/
static pascal void
Activate (Boolean active)
{
WindowPtr w;
DocHandle doc;
ControlHandle scroll;
TEHandle hTE;
RgnHandle oldClip;
Rect r;
GetPort (&w);
doc = WindDocHandle (w);
scroll = DocScroll (doc);
hTE = DocTE (doc);
DrawGrowBox (w);
if (active)
{
TEActivate (hTE);
HiliteScroll (doc);
ShowControl (scroll);
}
else
{
TEDeactivate (hTE);
/* hide scroll but don't show it being hidden */
oldClip = NewRgn ();
GetClip (oldClip);
SetRect (&r, 0, 0, 0, 0);
ClipRect (&r);
HideControl (scroll);
SetClip (oldClip);
DisposeRgn (oldClip);
/* now erase inside of scroll (but not outline, to avoid flicker) */
r = (**scroll).contrlRect; /* erase scroll */
InsetRect (&r, 1, 1); /* but not outline */
EraseRect (&r);
}
FixCursor (iBeamCursor);
if (DocActivateProc (doc) != nil) /* report event to the host */
(*DocActivateProc (doc)) (active);
}
/*
* Close box was clicked. If user specified notify proc, call it.
* Otherwise do default close operation (ask about saving if dirty,
* etc.).
*/
static pascal void
Close (void)
{
WindowPtr w;
DocHandle doc;
GetPort (&w);
doc = WindDocHandle (w);
if (DocCloseProc (doc) != nil)
(*DocCloseProc (doc)) ();
else
(void) EWindowClose (w);
}
/*
* Clobber an edit window. This routine is written defensively on the
* assumption that not all pieces of a complete edit window are present.
* This allows it to be called by SkelRmveWind() during window creation
* attempts if allocations fail.
*
* The window's skelWPropEditWind property structure will be disposed
* of by TransSkel, but the data associated with it (returned by
* WindDocHandle()) must be disposed of here.
*
* At this point it's too late to back out if any changes have been
* made to the text.
*/
static pascal void
Clobber (void)
{
WindowPtr w;
DocHandle doc;
TEHandle hTE;
GetPort (&w);
doc = WindDocHandle (w);
/*
* Toss document record and any pieces that exist
*/
if (doc != (DocHandle) nil)
{
if ((hTE = DocTE (doc)) != (TEHandle) nil)
TEDispose (hTE); /* toss text record */
DisposeHandle ((Handle) doc);
}
DisposeWindow (w); /* toss window (scroll bar, too) */
FixCursor (iBeamCursor);
}
/*
* Blink the caret and make sure the cursor's an i-beam when it's
* in the non-scrollbar part of the window.
*/
static pascal void
Idle (void)
{
WindowPtr w;
DocHandle doc;
GetPort (&w);
doc = WindDocHandle (w);
if (DocIdleProc (doc) != nil)
(*DocIdleProc (doc)) (); /* L. Tierney */
TEIdle (DocTE (doc)); /* blink that caret! */
FixCursor (iBeamCursor);
}
/* ---------------------------------------------------------------- */
/* Internal File Routines */
/* ---------------------------------------------------------------- */
/*
* Save the contents of the edit window. If there is no file bound
* to the window, ask for a file name. If askForFile is true, ask
* for a name even if the window is currently bound to a file. If
* bindToFile is true, bind the window to the file written to (if
* that's different than the currently bound file), and clear the
* window's dirty flag.
*
* Return true if the file was written without error. Return false
* if (a) user was asked for name and clicked Cancel (b) there was
* some error writing the file. In the latter case, the window is
* not bound to any new name given by user.
*
* Always returns false if the window isn't an edit window. This
* simplifies EWindowSave, EWindowSaveAs, EWindowSaveCopy. (They
* don't do the test.)
*/
static Boolean
SaveFile (WindowPtr w, Boolean askForFile, Boolean bindToFile)
{
DocHandle doc;
TEHandle hTE;
short f;
FInfo fndrInfo; /* finder info */
SFReply tmpFile;
Handle hText;
long count;
OSErr result;
Boolean haveNewFile = false;
if (!IsEWindow (w))
return (false);
doc = WindDocHandle (w);
hTE = DocTE (doc);
tmpFile = DocFile (doc); /* initialize default name */
if (DocBound (doc) == false || askForFile)
{
/*SFPPutFile (dlogWhere, "\pSave file as:", editFile.fName, nil, &tmpFile,
putDlgID, SkelDlogFilter (nil, false));*/
SFPPutFile (dlogWhere, "\pSave file as:", tmpFile.fName, nil, &tmpFile,
putDlgID, SkelDlogFilter (nil, false));
SkelRmveDlogFilter ();
SkelDoUpdates ();
if (!tmpFile.good)
return (false);
else
{
haveNewFile = true;
if (GetFInfo (tmpFile.fName, tmpFile.vRefNum, &fndrInfo)
== noErr) /* exists */
{
if (fndrInfo.fdType != 'TEXT')
{
ErrMesg ("\pNot a TEXT File");
return (false);
}
}
else /* doesn't exist. create it. */
{
if (Create (tmpFile.fName, tmpFile.vRefNum,
creator, 'TEXT') != noErr)
{
ErrMesg ("\pCan't Create");
return (false);
}
}
}
}
if (FSOpen (tmpFile.fName, tmpFile.vRefNum, &f) != noErr)
ErrMesg ("\pCan't Open");
else
{
FixCursor (watchCursor);
(void) SetFPos (f, fsFromStart, 0L);
hText = (**hTE).hText;
HLock (hText);
count = (**hTE).teLength;
result = FSWrite (f, &count, *hText);
(void) GetFPos (f, &count);
(void) SetEOF (f, count);
(void) FSClose (f);
(void) FlushVol (nil, tmpFile.vRefNum);
HUnlock (hText);
FixCursor (iBeamCursor);
if (result == noErr)
{
if (bindToFile)
{
DocDirty (doc) = false;
if (haveNewFile) /* name different than current */
{
SetWTitle (w, tmpFile.fName);
DocBound (doc) = true;
DocFile (doc) = tmpFile;
}
}
return (true);
}
ErrMesg ("\pWrite error!");
}
return (false);
}
/*
* Read file from disk. Return value indicates whether or not the
* file was read in successfully.
*/
static Boolean
ReadFile (DocHandle doc)
{
TEHandle hTE;
SFReply sfReply;
Boolean result = false;
short f;
long len;
Handle h;
hTE = DocTE (doc);
sfReply = DocFile (doc);
FixCursor (watchCursor);
if (FSOpen (sfReply.fName, sfReply.vRefNum, &f) != noErr)
ErrMesg ("\pCouldn't open file");
else
{
(void) GetEOF (f, &len);
if (len >= maxFileSize)
ErrMesg ("\pFile is too big");
else
{
h = (Handle) TEGetText (hTE);
SetHandleSize (h, len);
HLock (h);
(void) FSRead (f, &len, *h);
HUnlock (h);
(**hTE).teLength = len;
TESetSelect (0L, 0L, hTE); /* set caret at start */
DocDirty (doc) = false;
result = true;
}
(void) FSClose (f);
}
FixCursor (iBeamCursor);
return (result);
}
/* ------------------------------------------------------------ */
/* Interface (Public) Lowest-level Routines */
/* ------------------------------------------------------------ */
/*
* Return true/false to indicate whether the window is really an
* edit window.
*/
pascal Boolean
IsEWindow (WindowPtr w)
{
return ((Boolean) (WindDocHandle (w) != nil));
}
/*
* Return true/false to indicate whether the text associated with
* the window has been changed since the last save/revert (or since
* created, if not bound to file).
*/
pascal Boolean
IsEWindowDirty (WindowPtr w)
{
DocHandle doc;
if ((doc = WindDocHandle (w)) != nil)
return (DocDirty (doc));
return (false);
}
/*
* Return a handle to the TextEdit record associated with the edit
* window, or nil if it's not an edit window
*/
pascal TEHandle
GetEWindowTE (WindowPtr w)
{
DocHandle doc;
return ((doc = WindDocHandle (w)) == nil ? nil : DocTE (doc));
}
/*
* Return true/false depending on whether or not the editor is
* bound to a file, and a copy of the file info in the second
* argument. Pass nil for fileInfo if only want the return status.
* Returns false if it's not an edit window.
*/
pascal Boolean
GetEWindowFile (WindowPtr w, SFReply *fileInfo)
{
DocHandle doc;
if ((doc = WindDocHandle (w)) != nil)
{
if (fileInfo != nil)
*fileInfo = DocFile (doc);
return (DocBound (doc));
}
return (false);
}
/* ---------------------------------------------------------------- */
/* Interface Display Routines */
/* ---------------------------------------------------------------- */
/*
* Install event notification procedures for an edit window.
*/
pascal void
SetEWindowProcs (WindowPtr w, TEditKeyProcPtr pKey,
TEditActivateProcPtr pActivate, TEditCloseProcPtr pClose,
TEditIdleProcPtr pIdle)
{
DocHandle doc;
if (w == nil) /* reset window creation defaults */
{
e_key = pKey;
e_activate = pActivate;
e_close = pClose;
e_idle = pIdle; /* L. Tierney */
}
else if ((doc = WindDocHandle (w)) != (DocHandle) nil)
{
DocKeyProc (doc) = pKey;
DocActivateProc (doc) = pActivate;
DocCloseProc (doc) = pClose;
DocIdleProc (doc) = pIdle; /* L. Tierney */
}
}
/*
* Change the text display characteristics of an edit window
* and redisplay it.
*
* Scroll to home position before overhauling, because although
* the overhaul sets the viewRect to display an integral number
* of lines, there's no guarantee that the destRect offset will
* also be integral except at home position. Clipping is set to
* an empty rect so the scroll doesn't show.
*/
pascal void
SetEWindowStyle (WindowPtr w, short font,
short size, Style style, short wrap, short just)
/* added style parameter -- L. Tierney */
{
DocHandle doc;
GrafPtr savePort;
FontInfo f;
TEHandle hTE;
short oldWrap;
if (w == nil) /* reset window creation defaults */
{
e_font = font;
e_size = size;
e_style = style; /* L. Tierney */
e_wrap = wrap;
e_just = just;
return;
}
if ((doc = WindDocHandle (w)) != (DocHandle) nil)
{
GetPort (&savePort);
SetPort (w);
hTE = DocTE (doc);
GetPort (&savePort);
ScrollToHome (hTE);
oldWrap = (**hTE).crOnly;
(**hTE).crOnly = wrap; /* set word wrap */
TESetAlignment (just, hTE); /* set justification */
TextFont (font); /* set the font and point size */
TextSize (size); /* of text record */
TextFace (style); /* text style -- L. Tierney */
GetFontInfo (&f);
(**hTE).lineHeight = f.ascent + f.descent + f.leading;
(**hTE).fontAscent = f.ascent;
(**hTE).txFont = font;
(**hTE).txSize = size;
(**hTE).txFace = style;/* text style -- L. Tierney */
OverhaulDisplay (doc, true, (oldWrap >= 0 || wrap >= 0));
SetPort (savePort);
}
}
/*
* Redo display. Does not save current port. This is used by hosts
* that mess with the text externally to TransEdit. The arguments
* determine whether the text is scrolled to show the line with the
* caret, whether the lineStarts are recalculated, and whether or not
* the text should be marked dirty.
*/
pascal void
EWindowOverhaul (WindowPtr w, Boolean showCaret,
Boolean recalc, Boolean dirty)
{
DocHandle doc;
if ((doc = WindDocHandle (w)) != (DocHandle) nil)
{
OverhaulDisplay (doc, showCaret, recalc);
DrawControls (w);
DocDirty (doc) = dirty;
}
}
/* ---------------------------------------------------------------- */
/* Interface Menu Routine */
/* ---------------------------------------------------------------- */
/*
* Do Edit menu selection. This is only valid if an edit
* window is frontmost. Cut, Paste, and Clear cause the window
* to be marked dirty. Copy does not. Undo is unimplemented.
*/
pascal void
EWindowEditOp (short item)
{
DocHandle doc;
TEHandle hTE;
Boolean modified = false;
if (SystemEdit (item - 1))
return;
if ((doc = WindDocHandle (FrontWindow ())) == (DocHandle) nil)
return; /* not an edit window */
hTE = DocTE (doc);
switch (item)
{
/*
* cut selection, put in TE Scrap, clear clipboard and put
* TE scrap in it
*/
case cut:
TECut (hTE);
(void) ZeroScrap ();
(void) TEToScrap ();
modified = true;
break;
/*
* copy selection to TE Scrap, clear clipboard and put
* TE scrap in it
*/
case copy:
TECopy (hTE);
(void) ZeroScrap ();
(void) TEToScrap ();
break;
/*
* get clipboard into TE scrap, put TE scrap into edit record
*/
case paste:
(void) TEFromScrap ();
TEPaste (hTE);
modified = true;
break;
/*
* delete selection without putting into TE scrap or clipboard
*/
case clear:
TEDelete (hTE);
modified = true;
break;
}
AdjustDisplay (doc);
if (modified)
DocDirty (doc) = true;
}
/* ---------------------------------------------------------------- */
/* Interface File Routines */
/* ---------------------------------------------------------------- */
/*
* Set file creator for any files created by TransEdit
*/
pascal void
SetEWindowCreator (OSType creat)
{
creator = creat;
}
/*
* Save the contents of the given window
*/
pascal Boolean
EWindowSave (WindowPtr w)
{
return (SaveFile (w, /* window to save */
false, /* don't ask for file if have one */
true)); /* bind to new file if one given */
}
/*
* Save the contents of the given window under a new name
* and bind to that name.
*/
pascal Boolean
EWindowSaveAs (WindowPtr w)
{
return (SaveFile (w, /* window to save */
true, /* ask for file even if have one */
true)); /* bind to new file if one given */
}
/*
* Save the contents of the given window under a new name, but
* don't bind to the name.
*/
pascal Boolean
EWindowSaveCopy (WindowPtr w)
{
return (SaveFile (w, /* window to save */
true, /* ask for file even if have one */
false)); /* don't bind to file */
}
/*
* Close the window. If it's dirty and is either bound to a file
* or (if not bound) has some text in it, ask about saving it first,
* giving user option of saving changes, tossing them, or
* cancelling altogether.
*
* Return true if the file was saved and the window closed, false if
* user cancelled or there was an error.
*/
pascal Boolean
EWindowClose (WindowPtr w)
{
DocHandle doc;
TEHandle hTE;
SFReply sfReply;
if ((doc = WindDocHandle (w)) == (DocHandle) nil)
return (false);
hTE = DocTE (doc);
sfReply = DocFile (doc);
if ( (DocBound (doc) || (**hTE).teLength > 0) && DocDirty (doc))
{
switch (FakeAlert ("\pSave changes to \322", sfReply.fName,
"\p\323?", "\p", 3, 1, 2,
"\pSave", "\pCancel", "\pDon\325t Save")) /* ask whether to save */
{
case 1:
if (SaveFile (w, /* window to save */
false, /* don't ask for name */
false) /* don't bind to name */
== false)
return (false); /* canceled or error - cancel Close */
break;
case 2: /* cancel Close */
return (false);
case 3: /* toss changes */
break;
}
}
SkelRmveWind (w);
return (true);
}
/*
* Revert to saved version of file on disk. The window must be an edit
* window, and must be bound to a file. Returns false if one of these
* conditions is not met, or if they are met but there was an error
* reading the file.
*
* The window need not be dirty; if it is, the user is asked
* whether to really revert.
*/
pascal Boolean
EWindowRevert (WindowPtr w)
{
DocHandle doc;
SFReply sfReply;
if ((doc = WindDocHandle (w)) == (DocHandle) nil)
return (false);
if (!DocBound (doc))
return (false); /* no file to revert to */
if (DocDirty (doc))
{
sfReply = DocFile (doc);
if (FakeAlert ("\p\322", sfReply.fName,
"\p\323 has been changed. Really revert?",
"\p", 2, 1, 1, "\pCancel", "\pRevert", "\p") == 1)
return (false);
}
if (ReadFile (doc) == false)
return (false);
ScrollToHome (DocTE (doc));
OverhaulDisplay (doc, true, true);
DrawControls (w);
ValidRect (&w->portRect);
return (true);
}
/* ---------------------------------------------------------------- */
/* Interface Initialization/Termination Routines */
/* ---------------------------------------------------------------- */
/*
* Set up the SFReply record for a document. Ask for a file and use
* the file selected if bindToFile is true. Otherwise use title for
* the name if it's non-nil, or make the document untitled if title is
* nil or the empty string.
*
* Copy the name into the file info structure even if the window is
* unbound, because the Save operations expect to find it there as the
* most likely name to use.
*/
static Boolean
SetupFile (StringPtr title, Boolean bindToFile, SFReply *sfReply)
{
Str255 s;
OSType type = 'TEXT';
sfReply->vRefNum = 0;
if (bindToFile)
{
SFPGetFile (dlogWhere, "\p", nil, 1, &type, nil, sfReply,
getDlgID, SkelDlogFilter (nil, false));
SkelRmveDlogFilter ();
return (sfReply->good);
}
if (title == nil || title[0] == 0)
{
Untitled (s);
title = s;
}
BlockMove (title, sfReply->fName, (long) (title[0] + 1));
return (true);
}
/*
* Create and initialize an edit window and the associated data
* structures. If the window and data cannot be allocated, destroy
* the window and return nil. Otherwise return the window.
*
* The caller should set and restore the port before and after calling
* SetupDocWind().
*/
static TEClickLoopUPP AutoScrollUPP = NULL;
static WindowPtr
SetupDocWind (WindowPtr w, Boolean visible, Boolean bindToFile, SFReply *sfReply)
{
DocHandle doc;
SkelWindPropHandle prop;
ControlHandle scroll;
TEHandle hTE;
Rect r;
if (!SkelWindow (w, /* the window */
Mouse, /* mouse click handler */
Key, /* key click handler */
Update, /* window updating procedure */
Activate, /* window activate/deactivate procedure */
Close, /* window close procedure */
Clobber, /* window disposal procedure */
Idle, /* idle proc */
true)) /* idle only when frontmost */
{
DisposeWindow (w);
return (nil);
}
/*
* After this point SkelRmveWind() can be called to remove the window
* if any allocations fail.
*/
/*
* Get new document record, attach to window property list.
* Also make document record point to window.
*/
if (!SkelAddWindProp (w, skelWPropEditWind, (long) 0L))
{
SkelRmveWind (w);
return (nil);
}
doc = New (DocRecord);
if (doc == (DocHandle) nil)
{
SkelRmveWind (w);
return (nil);
}
prop = SkelGetWindProp (w, skelWPropEditWind);
(**prop).skelWPropData = (long) doc;
DocWind (doc) = w;
/*
* Build the scroll bar. Make sure the borders overlap the
* window frame and the frame of the grow box.
*/
CalcScrollRect (w, &r);
scroll = NewControl (w, &r, "\p", true, 0, 0, 0, scrollBarProc, 0L);
DocScroll (doc) = scroll;
/*
* Create the TE record used for text display. Use default
* characteristics.
*/
CalcEditRect (w, &r);
hTE = TENew (&r, &r);
DocTE (doc) = hTE;
if (! AutoScrollUPP)
AutoScrollUPP = NewTEClickLoopProc((ProcPtr) AutoScroll);
TESetClickLoop ((TEClickLoopUPP) AutoScrollUPP, hTE); /* set autoscroll proc */
if (scroll == (ControlHandle) nil || hTE == (TEHandle) nil)
{
SkelRmveWind (w);
return (nil);
}
/*
* Install default event notification procedures, font characteristics.
*/
SetEWindowProcs (w, e_key, e_activate, e_close, e_idle); /* idle added -- L. Tierney */
SetEWindowStyle (w, e_font, e_size, e_style, e_wrap, e_just);
DocFile (doc) = *sfReply;
DocBound (doc) = bindToFile;
if (bindToFile && !ReadFile (doc))
{
SkelRmveWind (w);
return (nil);
}
DocDirty (doc) = false;
/*
* Show window if specified as visible, and return a pointer to it.
*/
OverhaulDisplay (doc, true, true);
if (visible)
ShowWindow (w);
return (w);
}
/*
* Initialize the window and associated data structures.
* Return window pointer or nil if some sort of error.
*
* Preserves the current port. If the window is visible,
* an activate event will follow, at which point the port
* will be set to the window.
*
* If a file is to be solicited, ask for it before creating the
* window to avoid the following problem: If you create a window
* to be frontmost but invisible, putting up the getfile dialog
* after creating the window causes the window to go behind the
* first visible window when the file dialog goes away.
*/
pascal WindowPtr
NewEWindow (Rect *bounds, StringPtr title, Boolean visible,
WindowPtr behind, Boolean goAway,
long refNum, Boolean bindToFile)
{
WindowPtr w;
GrafPtr savePort;
SFReply sfReply;
if (!SetupFile (title, bindToFile, &sfReply)) /* user cancelled */
return (nil);
if (SkelQuery (skelQHasColorQD))
{
w = NewCWindow (nil, bounds, sfReply.fName, false, documentProc + 8,
behind, goAway, refNum);
}
else
{
w = NewWindow (nil, bounds, sfReply.fName, false, documentProc + 8,
behind, goAway, refNum);
}
if (w != (WindowPtr) nil)
{
GetPort (&savePort);
w = SetupDocWind (w, visible, bindToFile, &sfReply); /* nil if allocation failed */
SetPort (savePort);
}
return (w);
}
/*
* GetNewEWindow() is the resource equivalent of NewEWindow(). It reads in the
* 'WIND' template and yanks window creation values out of it rather than using
* GetWindow() since the latter would create the window visible right away.
* NewEWindow() doesn't show the window until after the file has been read in, if
* a file is to be read. procID value from resource is ignored.
*/
/* 'WIND' resource structure */
typedef struct WTmpl WTmpl, **WTHandle;
struct WTmpl
{
Rect bounds;
short procId;
short visible;
short goAway;
long refCon;
Str255 title;
};
pascal WindowPtr
GetNewEWindow (short resourceNum, WindowPtr behind, Boolean bindToFile)
{
WTHandle h;
WindowPtr w;
h = (WTHandle) GetResource ('WIND', resourceNum);
if (h == (WTHandle) nil)
return ((WindowPtr) nil);
MoveHHi ((Handle) h);
HLock ((Handle) h);
w = NewEWindow (&((**h).bounds), (**h).title, (Boolean) ((**h).visible != 0),
behind, (Boolean) ((**h).goAway != 0), (**h).refCon, bindToFile);
HUnlock ((Handle) h);
return (w);
}
/*
* Look through the list of windows, shutting down all the edit
* windows. If any window is dirty, ask user about saving it first.
* If the user cancels on any such request, ClobberEWindows returns
* false. If all edit windows are shut down, return true. It is
* then safe for the host to exit.
*
* When a window *is* shut down, have to start looking through the
* window list again, since w no longer points anywhere
* meaningful.
*/
pascal Boolean
ClobberEWindows (void)
{
WindowPtr w;
for (;;)
{
for (w = FrontWindow ();
w != nil;
w = (WindowPtr) ((WindowPeek) w)->nextWindow)
{
if (IsEWindow (w))
break;
}
if (w == nil)
return (true); /* all edit windows are shut down */
if (w != FrontWindow ())
{
SelectWindow (w);
ShowWindow (w);
EWindowOverhaul (w, false, false, IsEWindowDirty (w));
SetPort (w);
ValidRect (&w->portRect);
}
if (EWindowClose (w) == false)
return (false); /* cancel or error */
}
}
/**** Xlisp-Stat Additions -- L. Tierney */
/* change the dirty status */
pascal void
SetEWindowDirty (WindowPtr w, Boolean dirty)
{
DocHandle doc;
if ((doc = WindDocHandle (w)) != nil)
DocDirty (doc) = dirty;
}
/* show caret */
pascal void EWindowAdjustDisplay(WindowPtr w)
{
DocHandle doc;
if ((doc = WindDocHandle (w)) != nil)
AdjustDisplay(doc);
}
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