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1
11 package org.eclipse.swt.widgets;
12
13 import org.eclipse.swt.internal.win32.*;
14 import org.eclipse.swt.*;
15 import org.eclipse.swt.graphics.*;
16 import org.eclipse.swt.events.*;
17
18
42 public class ExpandBar extends Composite {
43 ExpandItem[] items;
44 int itemCount;
45 ExpandItem focusItem;
46 int spacing = 4;
47 int yCurrentScroll;
48 int hFont;
49
50
51
78 public ExpandBar (Composite parent, int style) {
79 super (parent, checkStyle (style));
80 }
81
82
101 public void addExpandListener (ExpandListener listener) {
102 checkWidget ();
103 if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
104 TypedListener typedListener = new TypedListener (listener);
105 addListener (SWT.Expand, typedListener);
106 addListener (SWT.Collapse, typedListener);
107 }
108
109 int callWindowProc (int hwnd, int msg, int wParam, int lParam) {
110 if (handle == 0) return 0;
111 return OS.DefWindowProc (hwnd, msg, wParam, lParam);
112 }
113
114 protected void checkSubclass () {
115 if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
116 }
117
118 static int checkStyle (int style) {
119 style &= ~SWT.H_SCROLL;
120 return style | SWT.NO_BACKGROUND;
121 }
122
123 public Point computeSize (int wHint, int hHint, boolean changed) {
124 checkWidget ();
125 int height = 0, width = 0;
126 if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
127 if (itemCount > 0) {
128 int hDC = OS.GetDC (handle);
129 int hTheme = 0;
130 if (isAppThemed ()) {
131 hTheme = display.hExplorerBarTheme ();
132 }
133 int hCurrentFont = 0, oldFont = 0;
134 if (hTheme == 0) {
135 if (hFont != 0) {
136 hCurrentFont = hFont;
137 } else {
138 if (!OS.IsWinCE) {
139 NONCLIENTMETRICS info = OS.IsUnicode ? (NONCLIENTMETRICS) new NONCLIENTMETRICSW () : new NONCLIENTMETRICSA ();
140 info.cbSize = NONCLIENTMETRICS.sizeof;
141 if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
142 LOGFONT logFont = OS.IsUnicode ? (LOGFONT) ((NONCLIENTMETRICSW)info).lfCaptionFont : ((NONCLIENTMETRICSA)info).lfCaptionFont;
143 hCurrentFont = OS.CreateFontIndirect (logFont);
144 }
145 }
146 }
147 if (hCurrentFont != 0) {
148 oldFont = OS.SelectObject (hDC, hCurrentFont);
149 }
150 }
151 height += spacing;
152 for (int i = 0; i < itemCount; i++) {
153 ExpandItem item = items [i];
154 height += item.getHeaderHeight ();
155 if (item.expanded) height += item.height;
156 height += spacing;
157 width = Math.max (width, item.getPreferredWidth (hTheme, hDC));
158 }
159 if (hCurrentFont != 0) {
160 OS.SelectObject (hDC, oldFont);
161 if (hCurrentFont != hFont) OS.DeleteObject (hCurrentFont);
162 }
163 OS.ReleaseDC (handle, hDC);
164 }
165 }
166 if (width == 0) width = DEFAULT_WIDTH;
167 if (height == 0) height = DEFAULT_HEIGHT;
168 if (wHint != SWT.DEFAULT) width = wHint;
169 if (hHint != SWT.DEFAULT) height = hHint;
170 Rectangle trim = computeTrim (0, 0, width, height);
171 return new Point (trim.width, trim.height);
172 }
173
174 void createHandle () {
175 super.createHandle ();
176 state &= ~CANVAS;
177 state |= TRACK_MOUSE;
178 }
179
180 void createItem (ExpandItem item, int style, int index) {
181 if (!(0 <= index && index <= itemCount)) error (SWT.ERROR_INVALID_RANGE);
182 if (itemCount == items.length) {
183 ExpandItem [] newItems = new ExpandItem [itemCount + 4];
184 System.arraycopy (items, 0, newItems, 0, items.length);
185 items = newItems;
186 }
187 System.arraycopy (items, index, items, index + 1, itemCount - index);
188 items [index] = item;
189 itemCount++;
190 if (focusItem == null) focusItem = item;
191
192 RECT rect = new RECT ();
193 OS.GetWindowRect (handle, rect);
194 item.width = Math.max (0, rect.right - rect.left - spacing * 2);
195 layoutItems (index, true);
196 }
197
198 void createWidget () {
199 super.createWidget ();
200 items = new ExpandItem [4];
201 if (!isAppThemed ()) {
202 backgroundMode = SWT.INHERIT_DEFAULT;
203 }
204 }
205
206 int defaultBackground() {
207 if (!isAppThemed ()) {
208 return OS.GetSysColor (OS.COLOR_WINDOW);
209 }
210 return super.defaultBackground();
211 }
212
213 void destroyItem (ExpandItem item) {
214 int index = 0;
215 while (index < itemCount) {
216 if (items [index] == item) break;
217 index++;
218 }
219 if (index == itemCount) return;
220 if (item == focusItem) {
221 int focusIndex = index > 0 ? index - 1 : 1;
222 if (focusIndex < itemCount) {
223 focusItem = items [focusIndex];
224 focusItem.redraw (true);
225 } else {
226 focusItem = null;
227 }
228 }
229 System.arraycopy (items, index + 1, items, index, --itemCount - index);
230 items [itemCount] = null;
231 item.redraw (true);
232 layoutItems (index, true);
233 }
234
235 void drawThemeBackground (int hDC, int hwnd, RECT rect) {
236 RECT rect2 = new RECT ();
237 OS.GetClientRect (handle, rect2);
238 OS.MapWindowPoints (handle, hwnd, rect2, 2);
239 OS.DrawThemeBackground (display.hExplorerBarTheme (), hDC, OS.EBP_NORMALGROUPBACKGROUND, 0, rect2, null);
240 }
241
242 void drawWidget (GC gc, RECT clipRect) {
243 int hTheme = 0;
244 if (isAppThemed ()) {
245 hTheme = display.hExplorerBarTheme ();
246 }
247 if (hTheme != 0) {
248 RECT rect = new RECT ();
249 OS.GetClientRect (handle, rect);
250 OS.DrawThemeBackground (hTheme, gc.handle, OS.EBP_HEADERBACKGROUND, 0, rect, clipRect);
251 } else {
252 drawBackground (gc.handle);
253 }
254 boolean drawFocus = false;
255 if (handle == OS.GetFocus ()) {
256 int uiState = OS.SendMessage (handle, OS.WM_QUERYUISTATE, 0, 0);
257 drawFocus = (uiState & OS.UISF_HIDEFOCUS) == 0;
258 }
259 int hCaptionFont = 0, oldFont = 0;
260 if (hTheme == 0) {
261 if (!OS.IsWinCE && hFont == 0) {
262 NONCLIENTMETRICS info = OS.IsUnicode ? (NONCLIENTMETRICS) new NONCLIENTMETRICSW () : new NONCLIENTMETRICSA ();
263 info.cbSize = NONCLIENTMETRICS.sizeof;
264 if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
265 LOGFONT logFont = OS.IsUnicode ? (LOGFONT) ((NONCLIENTMETRICSW)info).lfCaptionFont : ((NONCLIENTMETRICSA)info).lfCaptionFont;
266 hCaptionFont = OS.CreateFontIndirect (logFont);
267 oldFont = OS.SelectObject (gc.handle, hCaptionFont);
268 }
269 }
270 }
271 for (int i = 0; i < itemCount; i++) {
272 ExpandItem item = items[i];
273 item.drawItem (gc, hTheme, clipRect, item == focusItem && drawFocus);
274 }
275 if (hCaptionFont != 0) {
276 OS.SelectObject (gc.handle, oldFont);
277 OS.DeleteObject (hCaptionFont);
278 }
279 }
280
281 Control findBackgroundControl () {
282 Control control = super.findBackgroundControl ();
283 if (!isAppThemed ()) {
284 if (control == null) control = this;
285 }
286 return control;
287 }
288
289 Control findThemeControl () {
290 return isAppThemed () ? this : super.findThemeControl ();
291 }
292
293 int getBandHeight () {
294 if (hFont == 0) return ExpandItem.CHEVRON_SIZE;
295 int hDC = OS.GetDC (handle);
296 int oldHFont = OS.SelectObject (hDC, hFont);
297 TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA();
298 OS.GetTextMetrics (hDC, lptm);
299 OS.SelectObject (hDC, oldHFont);
300 OS.ReleaseDC (handle, hDC);
301 return Math.max (ExpandItem.CHEVRON_SIZE, lptm.tmHeight + 4);
302 }
303
304
319 public ExpandItem getItem (int index) {
320 checkWidget ();
321 if (!(0 <= index && index < itemCount)) error (SWT.ERROR_INVALID_RANGE);
322 return items [index];
323 }
324
325
335 public int getItemCount () {
336 checkWidget ();
337 return itemCount;
338 }
339
340
356 public ExpandItem [] getItems () {
357 checkWidget ();
358 ExpandItem [] result = new ExpandItem [itemCount];
359 System.arraycopy (items, 0, result, 0, itemCount);
360 return result;
361 }
362
363
373 public int getSpacing () {
374 checkWidget ();
375 return spacing;
376 }
377
378
396 public int indexOf (ExpandItem item) {
397 checkWidget ();
398 if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
399 for (int i = 0; i < itemCount; i++) {
400 if (items [i] == item) return i;
401 }
402 return -1;
403 }
404
405 boolean isAppThemed () {
406 if (background != -1) return false;
407 if (foreground != -1) return false;
408 if (hFont != 0) return false;
409 return OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ();
410 }
411
412 void layoutItems (int index, boolean setScrollbar) {
413 if (index < itemCount) {
414 int y = spacing - yCurrentScroll;
415 for (int i = 0; i < index; i++) {
416 ExpandItem item = items [i];
417 if (item.expanded) y += item.height;
418 y += item.getHeaderHeight () + spacing;
419 }
420 for (int i = index; i < itemCount; i++) {
421 ExpandItem item = items [i];
422 item.setBounds (spacing, y, 0, 0, true, false);
423 if (item.expanded) y += item.height;
424 y += item.getHeaderHeight () + spacing;
425 }
426 }
427 if (setScrollbar) setScrollbar ();
428 }
429
430 void releaseChildren (boolean destroy) {
431 if (items != null) {
432 for (int i=0; i<items.length; i++) {
433 ExpandItem item = items [i];
434 if (item != null && !item.isDisposed ()) {
435 item.release (false);
436 }
437 }
438 items = null;
439 }
440 focusItem = null;
441 super.releaseChildren (destroy);
442 }
443
444
461 public void removeExpandListener (ExpandListener listener) {
462 checkWidget ();
463 if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
464 if (eventTable == null) return;
465 eventTable.unhook (SWT.Expand, listener);
466 eventTable.unhook (SWT.Collapse, listener);
467 }
468
469 void setBackgroundPixel (int pixel) {
470 super.setBackgroundPixel (pixel);
471 if (!OS.IsWinCE) {
472 int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
473 OS.RedrawWindow (handle, null, 0, flags);
474 }
475 }
476
477 public void setFont (Font font) {
478 super.setFont (font);
479 hFont = font != null ? font.handle : 0;
480 layoutItems (0, true);
481 }
482
483 void setForegroundPixel (int pixel) {
484 super.setForegroundPixel (pixel);
485 if (!OS.IsWinCE) {
486 int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
487 OS.RedrawWindow (handle, null, 0, flags);
488 }
489 }
490
491 void setScrollbar () {
492 if (itemCount == 0) return;
493 if ((style & SWT.V_SCROLL) == 0) return;
494 RECT rect = new RECT();
495 OS.GetClientRect (handle, rect);
496 int height = rect.bottom - rect.top;
497 ExpandItem item = items [itemCount - 1];
498 int maxHeight = item.y + getBandHeight () + spacing;
499 if (item.expanded) maxHeight += item.height;
500
501 if (yCurrentScroll > 0 && height > maxHeight) {
503 yCurrentScroll = Math.max (0, yCurrentScroll + maxHeight - height);
504 layoutItems (0, false);
505 }
506 maxHeight += yCurrentScroll;
507
508 SCROLLINFO info = new SCROLLINFO ();
509 info.cbSize = SCROLLINFO.sizeof;
510 info.fMask = OS.SIF_RANGE | OS.SIF_PAGE | OS.SIF_POS;
511 info.nMin = 0;
512 info.nMax = maxHeight;
513 info.nPage = height;
514 info.nPos = Math.min (yCurrentScroll, info.nMax);
515 if (info.nPage != 0) info.nPage++;
516 OS.SetScrollInfo (handle, OS.SB_VERT, info, true);
517 }
518
519
528 public void setSpacing (int spacing) {
529 checkWidget ();
530 if (spacing < 0) return;
531 if (spacing == this.spacing) return;
532 this.spacing = spacing;
533 RECT rect = new RECT ();
534 OS.GetClientRect (handle, rect);
535 int width = Math.max (0, (rect.right - rect.left) - spacing * 2);
536 for (int i = 0; i < itemCount; i++) {
537 ExpandItem item = items[i];
538 if (item.width != width) item.setBounds (0, 0, width, item.height, false, true);
539 }
540 layoutItems (0, true);
541 OS.InvalidateRect (handle, null, true);
542 }
543
544 void showItem (ExpandItem item) {
545 Control control = item.control;
546 if (control != null && !control.isDisposed ()) {
547 control.setVisible (item.expanded);
548 }
549 item.redraw (true);
550 int index = indexOf (item);
551 layoutItems (index + 1, true);
552 }
553
554 TCHAR windowClass () {
555 return display.windowClass;
556 }
557
558 int windowProc () {
559 return display.windowProc;
560 }
561
562 LRESULT WM_KEYDOWN (int wParam, int lParam) {
563 LRESULT result = super.WM_KEYDOWN (wParam, lParam);
564 if (result != null) return result;
565 if (focusItem == null) return result;
566 switch (wParam) {
567 case OS.VK_SPACE:
568 case OS.VK_RETURN:
569 Event event = new Event ();
570 event.item = focusItem;
571 sendEvent (focusItem.expanded ? SWT.Collapse : SWT.Expand, event);
572 focusItem.expanded = !focusItem.expanded;
573 showItem (focusItem);
574 return LRESULT.ZERO;
575 case OS.VK_UP: {
576 int focusIndex = indexOf (focusItem);
577 if (focusIndex > 0) {
578 focusItem.redraw (true);
579 focusItem = items [focusIndex - 1];
580 focusItem.redraw (true);
581 return LRESULT.ZERO;
582 }
583 break;
584 }
585 case OS.VK_DOWN: {
586 int focusIndex = indexOf (focusItem);
587 if (focusIndex < itemCount - 1) {
588 focusItem.redraw (true);
589 focusItem = items [focusIndex + 1];
590 focusItem.redraw (true);
591 return LRESULT.ZERO;
592 }
593 break;
594 }
595 }
596 return result;
597 }
598
599 LRESULT WM_KILLFOCUS (int wParam, int lParam) {
600 LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
601 if (focusItem != null) focusItem.redraw (true);
602 return result;
603 }
604
605 LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
606 LRESULT result = super.WM_LBUTTONDOWN (wParam, lParam);
607 if (result == LRESULT.ZERO) return result;
608 int x = (short) (lParam & 0xFFFF);
609 int y = (short) (lParam >> 16);
610 for (int i = 0; i < itemCount; i++) {
611 ExpandItem item = items[i];
612 boolean hover = item.isHover (x, y);
613 if (hover && focusItem != item) {
614 focusItem.redraw (true);
615 focusItem = item;
616 focusItem.redraw (true);
617 forceFocus ();
618 break;
619 }
620 }
621 return result;
622 }
623
624 LRESULT WM_LBUTTONUP (int wParam, int lParam) {
625 LRESULT result = super.WM_LBUTTONUP (wParam, lParam);
626 if (result == LRESULT.ZERO) return result;
627 if (focusItem == null) return result;
628 int x = (short) (lParam & 0xFFFF);
629 int y = (short) (lParam >> 16);
630 boolean hover = focusItem.isHover (x, y);
631 if (hover) {
632 Event event = new Event ();
633 event.item = focusItem;
634 sendEvent (focusItem.expanded ? SWT.Collapse : SWT.Expand, event);
635 focusItem.expanded = !focusItem.expanded;
636 showItem (focusItem);
637 }
638 return result;
639 }
640
641 LRESULT WM_MOUSELEAVE (int wParam, int lParam) {
642 LRESULT result = super.WM_MOUSELEAVE (wParam, lParam);
643 if (result != null) return result;
644 for (int i = 0; i < itemCount; i++) {
645 ExpandItem item = items [i];
646 if (item.hover) {
647 item.hover = false;
648 item.redraw (false);
649 break;
650 }
651 }
652 return result;
653 }
654
655 LRESULT WM_MOUSEMOVE (int wParam, int lParam) {
656 LRESULT result = super.WM_MOUSEMOVE (wParam, lParam);
657 if (result == LRESULT.ZERO) return result;
658 int x = (short) (lParam & 0xFFFF);
659 int y = (short) (lParam >> 16);
660 for (int i = 0; i < itemCount; i++) {
661 ExpandItem item = items [i];
662 boolean hover = item.isHover (x, y);
663 if (item.hover != hover) {
664 item.hover = hover;
665 item.redraw (false);
666 }
667 }
668 return result;
669 }
670
671 LRESULT WM_PAINT (int wParam, int lParam) {
672 PAINTSTRUCT ps = new PAINTSTRUCT ();
673 GCData data = new GCData ();
674 data.ps = ps;
675 data.hwnd = handle;
676 GC gc = new_GC (data);
677 if (gc != null) {
678 int width = ps.right - ps.left;
679 int height = ps.bottom - ps.top;
680 if (width != 0 && height != 0) {
681 RECT rect = new RECT ();
682 OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom);
683 drawWidget (gc, rect);
684 if (hooks (SWT.Paint) || filters (SWT.Paint)) {
685 Event event = new Event ();
686 event.gc = gc;
687 event.x = rect.left;
688 event.y = rect.top;
689 event.width = width;
690 event.height = height;
691 sendEvent (SWT.Paint, event);
692 event.gc = null;
693 }
694 }
695 gc.dispose ();
696 }
697 return LRESULT.ZERO;
698 }
699
700 LRESULT WM_PRINTCLIENT (int wParam, int lParam) {
701 LRESULT result = super.WM_PRINTCLIENT (wParam, lParam);
702 RECT rect = new RECT ();
703 OS.GetClientRect (handle, rect);
704 GCData data = new GCData ();
705 data.device = display;
706 data.foreground = getForegroundPixel ();
707 GC gc = GC.win32_new (wParam, data);
708 drawWidget (gc, rect);
709 gc.dispose ();
710 return result;
711 }
712
713 LRESULT WM_SETCURSOR (int wParam, int lParam) {
714 LRESULT result = super.WM_SETCURSOR (wParam, lParam);
715 if (result != null) return result;
716 int hitTest = lParam & 0xFFFF;
717 if (hitTest == OS.HTCLIENT) {
718 for (int i = 0; i < itemCount; i++) {
719 ExpandItem item = items [i];
720 if (item.hover) {
721 int hCursor = OS.LoadCursor (0, OS.IDC_HAND);
722 OS.SetCursor (hCursor);
723 return LRESULT.ONE;
724 }
725 }
726 }
727 return result;
728 }
729
730 LRESULT WM_SETFOCUS (int wParam, int lParam) {
731 LRESULT result = super.WM_SETFOCUS (wParam, lParam);
732 if (focusItem != null) focusItem.redraw (true);
733 return result;
734 }
735
736 LRESULT WM_SIZE (int wParam, int lParam) {
737 LRESULT result = super.WM_SIZE (wParam, lParam);
738 RECT rect = new RECT ();
739 OS.GetClientRect (handle, rect);
740 int width = Math.max (0, (rect.right - rect.left) - spacing * 2);
741 for (int i = 0; i < itemCount; i++) {
742 ExpandItem item = items[i];
743 if (item.width != width) item.setBounds (0, 0, width, item.height, false, true);
744 }
745 setScrollbar ();
746 OS.InvalidateRect (handle, null, true);
747 return result;
748 }
749
750 LRESULT wmScroll (ScrollBar bar, boolean update, int hwnd, int msg, int wParam, int lParam) {
751 LRESULT result = super.wmScroll (bar, true, hwnd, msg, wParam, lParam);
752 SCROLLINFO info = new SCROLLINFO ();
753 info.cbSize = SCROLLINFO.sizeof;
754 info.fMask = OS.SIF_POS;
755 OS.GetScrollInfo (handle, OS.SB_VERT, info);
756 int updateY = yCurrentScroll - info.nPos;
757 OS.ScrollWindowEx (handle, 0, updateY, null, null, 0, null, OS.SW_SCROLLCHILDREN | OS.SW_INVALIDATE);
758 yCurrentScroll = info.nPos;
759 if (updateY != 0) {
760 for (int i = 0; i < itemCount; i++) {
761 items [i].y += updateY;
762 }
763 }
764 return result;
765 }
766 }
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