Mercurial > projects > dynamin

comparison dynamin/gui/container.d @ 57:1db4cb3abbb0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add Container.descendants
author Jordan Miner <jminer7@gmail.com>
date Sat, 08 Aug 2009 17:15:31 -0500
parents c2566ab82535
children 712ea1ea845a
comparison
equal deleted inserted replaced
56:c2566ab82535 57:1db4cb3abbb0
352 if(int result = dg(i, tmp)) 352 if(int result = dg(i, tmp))
353 return result; 353 return result;
354 } 354 }
355 return 0; 355 return 0;
356 } 356 }
357 /**
358 * Calls the specified delegate with each descendant of this container, for
359 * use with foreach.
360 *
361 * Example:
362 * -----
363 * foreach(c; &container.descendants) {
364 * // do something with c
365 * }
366 * -----
367 */
368 int descendants(int delegate(ref Control item) dg) {
369 for(int i = 0; i < _children.count; ++i) {
370 auto tmp = _children[i];
371 if(int result = dg(tmp))
372 return result;
373 auto c = cast(Container)_children[i];
374 if(c)
375 if(int result = c.descendants(dg))
376 return result;
377 }
378 return 0;
379 }
380 /**
381 * Same as descendants(), but includes this container in addition to
382 * descendants.
383 */
384 int descendantsPlus(int delegate(ref Control item) dg) {
385 Control tmp = this;
386 if(int result = dg(tmp))
387 return result;
388 if(int result = descendants(dg))
389 return result;
390 return 0;
391 }
357 } 392 }
358 unittest { 393 unittest {
359 auto i = 0; 394 int a = 0, r = 0;
360 auto container = new Panel; 395 auto container1 = new Panel;
361 container.descendantAdded += (HierarchyEventArgs e) { i++; }; 396 auto container2 = new Panel;
362 auto sub = new Panel; 397 auto control1 = new Control;
363 sub.add(new Control); 398 auto control2 = new Control;
364 container.add(sub); 399 auto control3 = new Control;
365 assert(i == 2); 400 container1.descendantAdded += (HierarchyEventArgs e) { a++; };
401 container1.descendantRemoved += (HierarchyEventArgs e) { r++; };
402
403 container2.add(control2);
404 container2.children.add(control3);
405 assert(control3.parent == container2);
406 container1.add(control1);
407 assert(a == 1); // test descendantAdded
408 container1.add(container2);
409 assert(a == 4); // test descendantAdded
410
411 // test Container.descendants
412 auto list = new List!(Control);
413 foreach(c; &container1.descendants)
414 list.add(c);
415 assert(list.data == [control1, container2, control2, control3]);
416
417 list.clear();
418 foreach(c; &container1.descendantsPlus)
419 list.add(c);
420 assert(list.data == [cast(Control)container1, control1, container2,
421 control2, control3]);
366 } 422 }
367 423
368 class Panel : Container { 424 class Panel : Container {
369 ControlList children() { return _children; } 425 ControlList children() { return _children; }
370 void add(Control child) { super.add(child); }; 426 void add(Control child) { super.add(child); };