1 /* sidebar.js is part of Aloha Editor project http://aloha-editor.org
  2  *
  3  * Aloha Editor is a WYSIWYG HTML5 inline editing library and editor. 
  4  * Copyright (c) 2010-2012 Gentics Software GmbH, Vienna, Austria.
  5  * Contributors http://aloha-editor.org/contribution.php 
  6  * 
  7  * Aloha Editor is free software; you can redistribute it and/or
  8  * modify it under the terms of the GNU General Public License
  9  * as published by the Free Software Foundation; either version 2
 10  * of the License, or any later version.
 11  *
 12  * Aloha Editor is distributed in the hope that it will be useful,
 13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  * GNU General Public License for more details.
 16  *
 17  * You should have received a copy of the GNU General Public License
 18  * along with this program; if not, write to the Free Software
 19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 20  * 
 21  * As an additional permission to the GNU GPL version 2, you may distribute
 22  * non-source (e.g., minimized or compacted) forms of the Aloha-Editor
 23  * source code without the copy of the GNU GPL normally required,
 24  * provided you include this license notice and a URL through which
 25  * recipients can access the Corresponding Source.
 26  */
 27 /**
 28  * @todo: - Make the sidebars resizable using drag handles.
 29  *        - Make overlayPage setting settable from external config.
 30  */
 31 
 32 define([
 33     'aloha/core',
 34     'jquery',
 35     'aloha/selection',
 36     'PubSub'
 37 ], function (
 38 	Aloha,
 39 	$,
 40 	Selection,
 41 	PubSub
 42 ) {
 43 	'use strict';
 44 
 45 	var uid  = +(new Date());
 46 
 47 	// Extend jQuery easing animations.
 48 	//debugger;
 49 	if (!$.easing.easeOutExpo) {
 50 		$.extend($.easing, {
 51 			easeOutExpo: function (x, t, b, c, d) {
 52 				return (t==d)?b+c:c*(-Math.pow(2,-10*t/d)+1)+b;
 53 			},
 54 			easeOutElastic: function (x, t, b, c, d) {
 55 				var m=Math,s=1.70158,p=0,a=c;
 56 				if(!t)return b;
 57 				if((t/=d)==1)return b+c;
 58 				if(!p)p=d*.3;
 59 				if(a<m.abs(c)){a=c;var s=p/4;}else var s=p/(2*m.PI)*m.asin(c/a);
 60 				return a*m.pow(2,-10*t)*m.sin((t*d-s)*(2*m.PI)/p)+c+b;
 61 			}
 62 		});
 63 	}
 64 
 65 	var Panel = function Panel(opts) {
 66 		this.id = null;
 67 		this.folds = {};
 68 		this.button	= null;
 69 		this.title = $('<div class="aloha-sidebar-panel-title">' +
 70 				'<span class="aloha-sidebar-panel-title-arrow"></span>' +
 71 				'<span class="aloha-sidebar-panel-title-text">Untitled</span>' +
 72 			'</div>');
 73 		this.content = $('<div class="aloha-sidebar-panel-content">' +
 74 				'<div class="aloha-sidebar-panel-content-inner">' +
 75 					'<div class="aloha-sidebar-panel-content-inner-text"></div>' +
 76 				'</div>' +
 77 			'</div>');
 78 		this.element  = null;
 79 		this.effectiveElement = null;
 80 		this.expanded = false;
 81 		this.isActive = true;
 82 		this.init(opts);
 83 	};
 84 
 85 	var Sidebar = function Sidebar(opts) {
 86 		var sidebar = this;
 87 		this.id = 'aloha-sidebar-' + (++uid);
 88 		this.panels = {};
 89 		this.container = $('<div class="aloha-ui aloha-sidebar-bar">' +
 90 				'<div class="aloha-sidebar-handle">' +
 91 					'<span class="aloha-sidebar-handle-icon"></span>' +
 92 				'</div>' +
 93 				'<div class="aloha-sidebar-inner">' +
 94 					'<ul class="aloha-sidebar-panels"></ul>' +
 95 				'</div>' +
 96 			'</div>');
 97 		this.width = 300;
 98 		this.opened = false;
 99 		this.isOpen = false;
100 		this.settings = {
101 			// We automatically set this to true when we are in IE, where
102 			// rotating elements using filters causes undesirable rendering
103 104 			// ugliness.  Our solution is to fallback to swapping icon images.
105 			// We set this as a sidebar property so that it can overridden by
106 			// whoever thinks they are smarter than we are.
107 			rotateIcons : !$.browser.msie,
108 			overlayPage : true
109 		};
110 
111 		$(function () {
112 			if (!((typeof Aloha.settings.sidebar !== 'undefined') &&
113 					Aloha.settings.sidebar.disabled)) {
114 				sidebar.init(opts);
115 			}
116 		});
117 	};
118 
119 	/**
120 	 * The last calculated view port height.
121 	 * @type {number}
122 	 */
123 	var previousViewportHeight = null;
124 	var previousActivePanelIds = null;
125 
126 	$.extend(Sidebar.prototype, {
127 
128 		// We build as much of the sidebar as we can before appending it to DOM
129 		// to minimize reflow.
130 		init: function (opts) {
131 			var that = this;
132 			var panels;
133 
134 			if (typeof opts === 'object') {
135 				panels = opts.panels;
136 				delete opts.panels;
137 			}
138 
139 			$.extend(this, opts);
140 
141 			if (typeof panels === 'object') {
142 				$.each(panels, function () {
143 					that.addPanel(this, true);
144 				});
145 			}
146 
147 			var bar = this.container;
148 
149 			if (this.position === 'right') {
150 				bar.addClass('aloha-sidebar-right');
151 			}
152 
153 			bar.hide()
154 			   .appendTo($('body'))
155 			   .click(function () { that.barClicked.apply(that, arguments); })
156 			   .find('.aloha-sidebar-panels').width(this.width);
157 
158 			// IE7 needs us to explicitly set the container width, since it is
159 			// unable to determine it on its own.
160 			bar.width(this.width);
161 			this.width = bar.width();
162 
163 			$(window).resize(function () {
164 				that.updateHeight();
165 			});
166 
167 			this.updateHeight();
168 			this.initToggler();
169 
170 			this.container.css(this.position === 'right'
171 				? 'marginRight' : 'marginLeft', -this.width);
172 
173 			if (this.opened) {
174 				this.open(0);
175 			}
176 
177 			this.toggleHandleIcon(this.isOpen);
178 			this.subscribeToEvents();
179 
180 			$(window).resize(function () {
181 				that.correctHeight();
182 			});
183 
184 			this.correctHeight();
185 		},
186 
187 		show: function () {
188 			this.container.css('display', 'block');
189 			return this;
190 		},
191 
192 		hide: function () {
193 			this.container.css('display','none');
194 			return this;
195 		},
196 
197 		/**
198 		 * Determines the effective elements at the current selection.
199 		 * Iterates through all panels and checks whether the panel should be
200 		 * activated for any of the effective elements in the selection.
201 		 *
202 		 * @param {Aloha.RangeObject} range The current selection range.
203 		 */
204 		checkActivePanels: function (range) {
205 			var effective = [];
206 
207 			if (typeof range !== 'undefined' &&
208 					typeof range.markupEffectiveAtStart !== 'undefined') {
209 				var l = range.markupEffectiveAtStart.length;
210 				var i;
211 				for (i = 0; i < l; ++i) {
212 					effective.push($(range.markupEffectiveAtStart[i]));
213 				}
214 			}
215 
216 			var that = this;
217 
218 			$.each(this.panels, function () {
219 				that.showActivePanel(this, effective);
220 			});
221 
222 			this.correctHeight();
223 		},
224 
225 		subscribeToEvents: function () {
226 			var that = this;
227 
228 			PubSub.sub('aloha.selection.context-change', function (message) {
229 				if (that.isOpen) {
230 					that.checkActivePanels(message.range);
231 				}
232 				that.lastRange = message.range;
233 			});
234 
235 236 			Aloha.bind('aloha-editable-deactivated', function (event, params) {
237 				if (that.isOpen) {
238 					that.checkActivePanels();
239 				}
240 				that.lastRange = null;
241 			});
242 
243 			this.container.mousedown(function (e) {
244 				e.originalEvent.stopSelectionUpdate = true;
245 				Aloha.eventHandled = true;
246 			});
247 
248 			this.container.mouseup(function (e) {
249 				e.originalEvent.stopSelectionUpdate = true;
250 				Aloha.eventHandled = false;
251 			});
252 		},
253 
254 		/**
255 		 * Dynamically set appropriate heights for panels.
256 		 * The height for each panel is determined by the amount of space that
257 		 * is available in the viewport and the number of panels that need to
258 		 * share that space.
259 		 */
260 		correctHeight: function () {
261 			if (!this.isOpen) {
262 				return;
263 			}
264 
265 			var viewportHeight = $(window).height();
266 			var activePanelIds = [];
267 			var panels = [];
268 			var panelId;
269 			for (panelId in this.panels) if (this.panels.hasOwnProperty(panelId)) {
270 				if (this.panels[panelId].isActive) {
271 					panels.push(this.panels[panelId]);
272 					activePanelIds.push(panelId);
273 				}
274 			}
275 
276 			if (0 === panels.length) {
277 				return;
278 			}
279 
280 			activePanelIds = activePanelIds.sort().join(',');
281 
282 			if (previousActivePanelIds === activePanelIds &&
283 			    previousViewportHeight === viewportHeight) {
284 				return;
285 			}
286 
287 			previousViewportHeight = viewportHeight;
288 			previousActivePanelIds = activePanelIds;
289 
290 			var height = this.container.find('.aloha-sidebar-inner').height();
291 			var remainingHeight = height - ((panels[0].title.outerHeight() + 10) * panels.length);
292 			var panel;
293 			var targetHeight;
294 			var panelInner;
295 			var panelText;
296 			var undone;
297 			var toadd = 0;
298 			var math = Math;
299 			var j;
300 
301 			while (panels.length > 0 && remainingHeight > 0) {
302 				remainingHeight += toadd;
303 				toadd = 0;
304 				undone = [];
305 
306 				for (j = panels.length - 1; j >= 0; --j) {
307 					panel = panels[j];
308 					panelInner = panel.content.find('.aloha-sidebar-panel-content-inner');
309 
310 					targetHeight = math.min(
311 						panelInner.height('auto').height(),
312 						math.floor(remainingHeight / (j + 1))
313 					);
314 
315 					panelInner.height(targetHeight);
316 					remainingHeight -= targetHeight;
317 					panelText = panelInner.find('.aloha-sidebar-panel-content-inner-text');
318 
319 					if (panelText.height() > targetHeight) {
320 						undone.push(panel);
321 						toadd += targetHeight;
322 						panelInner.css({
323 							'overflow-x': 'hidden',
324 							'overflow-y': 'scroll'
325 						});
326 					} else {
327 						panelInner.css('overflow-y', 'hidden');
328 					}
329 
330 					if (panel.expanded) {
331 						panel.expand();
332 					}
333 				}
334 
335 				panels = undone;
336 			}
337 		},
338 
339 		/**
340 		 * Checks whether this panel should be activated (ie: made visible) for
341 		 * any of the elements specified in a given list of elements.
342 		 *
343 		 * We have to add a null object to the list of elements to allow us to
344 		 * check whether the panel should be visible when we have no effective
345 		 * elements in the current selection
346 		 *
347 		 * @param {object} panel The Panel object we will test
348 		 * @param {Array.<jQuery.<HTMLElement>>} elements The effective
349 		 *                                                elements, any of
350 		 *                                                which may activate
351 		 *                                                the panel.
352 		 */
353 		showActivePanel: function (panel, elements) {
354 			elements.push(null);
355 
356 			var li = panel.content.parent('li');
357 			var activeOn = panel.activeOn;
358 			var effective = $();
359 			var count = 0;
360 			var j = elements.length;
361 			var i;
362 
363 			for (i = 0; i < j; ++i) {
364 				if (activeOn(elements[i])) {
365 					++count;
366 					if (elements[i]) {
367 						$.merge(effective, elements[i]);
368 					}
369 				}
370 			}
371 
372 			if (count) {
373 				panel.activate(effective);
374 			} else {
375 				panel.deactivate();
376 			}
377 		},
378 
379 		/**
380 		 * Sets up the functionality, event listeners, and animation of the
381 		 * sidebar handle
382 		 */
383 		initToggler: function () {
384 			var that = this;
385 			var bar = this.container;
386 			var icon = bar.find('.aloha-sidebar-handle-icon');
387 			var toggledClass = 'aloha-sidebar-toggled';
388 			var bounceTimer;
389 			var isRight = (this.position === 'right');
390 
391 			if (this.opened) {
392 				this.rotateHandleArrow(isRight ? 0 : 180, 0);
393 			}
394 
395 			// configure the position of the sidebar handle
396 			$(function () {
397 				if (typeof Aloha.settings.sidebar !== 'undefined' &&
398 						Aloha.settings.sidebar.handle &&
399 						Aloha.settings.sidebar.handle.top) {
400 					$(bar.find('.aloha-sidebar-handle'))[0].style.top =
401 						Aloha.settings.sidebar.handle.top;
402 				}
403 			});
404 
405 			bar.find('.aloha-sidebar-handle')
406 				.click(function () {
407 					if (bounceTimer) {
408 						clearInterval(bounceTimer);
409 					}
410 
411 					icon.stop().css('marginLeft', 4);
412 
413 					if (that.isOpen) {
414 						$(this).removeClass(toggledClass);
415 						that.close();
416 						that.isOpen = false;
417 					} else {
418 						$(this).addClass(toggledClass);
419 						that.open();
420 						that.isOpen = true;
421 					}
422 				}).hover(function () {
423 					var flag = that.isOpen ? -1 : 1;
424 
425 					if (bounceTimer) {
426 						clearInterval(bounceTimer);
427 					}
428 
429 					icon.stop();
430 
431 					$(this).stop().animate(
432 						isRight ? {marginLeft: '-=' + (flag * 5)}
433 								: {marginRight: '-=' + (flag * 5)},
434 						200);
435 
436 					bounceTimer = setInterval(function () {
437 						flag *= -1;
438 						icon.animate(
439 							isRight ? {left: '-=' + (flag * 4)}
440 									: {right: '-=' + (flag * 4)},
441 							300
442 						);
443 					}, 300);
444 				}, function () {
445 					if (bounceTimer) {
446 						clearInterval(bounceTimer);
447 					}
448 
449 					icon.stop().css(isRight ? 'left' : 'right', 5);
450 
451 					$(this).stop().animate(
452 						isRight ? {marginLeft: 0} : {marginRight: 0},
453 						600, 'easeOutElastic');
454 				});
455 		},
456 
457 		/**
458 		 * Rounds the top corners of the first visible panel, and the bottom
459 		 * corners of the last visible panel elements in the panels ul list.
460 		 * @deprecated
461 		 * @fixme: css3
462 		 */
463 		roundCorners: function () {
464 
465 			var bar = this.container;
466 			var lis = bar.find('.aloha-sidebar-panels>li:not(.aloha-sidebar-deactivated)');
467 			var topClass = 'aloha-sidebar-panel-top';
468 			var bottomClass = 'aloha-sidebar-panel-bottom';
469 
470 			bar.find('.aloha-sidebar-panel-top, .aloha-sidebar-panel-bottom')
471 			   .removeClass(topClass)
472 			   .removeClass(bottomClass);
473 
474 			lis.first().find('.aloha-sidebar-panel-title').addClass(topClass);
475 			lis.last().find('.aloha-sidebar-panel-content').addClass(bottomClass);
476 		},
477 
478 		/**
479 		 * Updates the height of the inner div of the sidebar. This is done
480 		 * whenever the viewport is resized.
481 		 */
482 		updateHeight: function () {
483 484 			var h = $(window).height();
485 			this.container.height(h).find('.aloha-sidebar-inner').height(h);
486 		},
487 
488 		/**
489 		 * Delegate all sidebar onclick events to the container.
490 		 * Then use handleBarclick method until we bubble up to the first
491 		 * significant element that we can interact with.
492 		 */
493 		barClicked: function (ev) {
494 			this.handleBarclick($(ev.target));
495 		},
496 
497 		/**
498 		 * We handle all click events on the sidebar from here--dispatching
499 		 * calls to which ever methods that should be invoked for the each
500 		 * interaction.
501 		 */
502 		handleBarclick: function (el) {
503 			if (el.hasClass('aloha-sidebar-panel-title')) {
504 				this.togglePanel(el);
505 			} else if (!el.hasClass('aloha-sidebar-panel-content') &&
506                        !el.hasClass('aloha-sidebar-handle') &&
507                        !el.hasClass('aloha-sidebar-bar')) {
508 				this.handleBarclick(el.parent());
509 			}
510 		},
511 
512 		getPanelById: function (id) {
513 			return this.panels[id];
514 		},
515 
516 		getPanelByElement: function (el) {
517 			var li = (el[0].tagName === 'LI') ? el : el.parent('li');
518 			return this.getPanelById(li[0].id);
519 		},
520 
521 		togglePanel: function (el) {
522 			this.getPanelByElement(el).toggle();
523 		},
524 
525 		/**
526 		 * Animation to rotate the sidebar arrow
527 		 *
528 		 * @param {number} angle The angle two which the arrow should rotate
529 		 *						 (0 or 180).
530 		 * @param {number|String} duration (Optional) How long the animation
531 		 *                                 should play for.
532 		 */
533 		rotateHandleIcon: function (angle, duration) {
534 			var arr = this.container.find('.aloha-sidebar-handle-icon');
535 			arr.animate({angle: angle}, {
536 				duration : (typeof duration === 'number' ||
537                             typeof duration === 'string') ? duration : 500,
538 				easing   : 'easeOutExpo',
539 				step     : function (val, fx) {
540 					arr.css({
541 						'-o-transform'      : 'rotate(' + val + 'deg)',
542 						'-webkit-transform' : 'rotate(' + val + 'deg)',
543 						'-moz-transform'    : 'rotate(' + val + 'deg)',
544 						'-ms-transform'     : 'rotate(' + val + 'deg)'
545 					  // We cannot use Microsoft Internet Explorer filters
546 					  // because Microsoft Internet Explore 8 does not support
547 					  // Microsoft Internet Explorer filters correctly. It
548 					  // breaks the layout
549 					  // filter             : 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (angle / 90) + ')'
550 					});
551 				}
552 			});
553 		},
554 
555 		/**
556 		 * Sets the handle icon to the "i am opened, click me to close the
557 		 * sidebar" state, or vice versa. The direction of the arrow depends
558 		 * on whether the sidebar is on the left or right, and whether it is
559 		 * in an opened state or not.
560 		 *
561 		 * @param {boolean} isOpen Whether or not the sidebar is in the opened
562 		 *                         state.
563 		 */
564 		toggleHandleIcon: function (isOpen) {
565 			var isPointingLeft = (this.position === 'right') ^ isOpen;
566 
567 			if (this.settings.rotateIcons) {
568 				this.rotateHandleIcon(isPointingLeft ? 180 : 0, 0);
569 			} else {
570 				var icon = this.container.find('.aloha-sidebar-handle-icon');
571 
572 				if (isPointingLeft) {
573 					icon.addClass('aloha-sidebar-handle-icon-left');
574 				} else {
575 					icon.removeClass('aloha-sidebar-handle-icon-left');
576 				}
577 			}
578 		},
579 
580 		/**
581 		 * Slides the sidebar into view
582 		 */
583 		open: function (duration, callback) {
584 			if (this.isOpen) {
585 				return this;
586 			}
587 
588 			var isRight = (this.position === 'right');
589 			var anim = isRight ? {marginRight: 0} : {marginLeft: 0};
590 
591 			this.toggleHandleIcon(true);
592 			this.container.animate(anim,
593 				(typeof duration === 'number' || typeof duration === 'string')
594 					? duration : 500,
595 				'easeOutExpo');
596 
597 			if (!this.settings.overlayPage) {
598 				$('body').animate(
599 					isRight ? {marginRight: '+=' + this.width}
600 					        : {marginLeft: '+=' + this.width},
601 					500, 'easeOutExpo');
602 			}
603 
604 			this.isOpen = true;
605 			this.correctHeight();
606 			if (this.lastRange) {
607 				this.checkActivePanels(this.lastRange);
608 			}
609 			$('body').trigger('aloha-sidebar-opened', this);
610 
611 			return this;
612 		},
613 
614 		/**
615 		 * Slides that sidebar out of view.
616 		 */
617 		close: function (duration, callback) {
618 			if (!this.isOpen) {
619 				return this;
620 			}
621 
622 			var isRight = (this.position === 'right');
623 			var anim = isRight ? {marginRight: -this.width} : {marginLeft: -this.width};
624 
625 			this.toggleHandleIcon(false);
626 			this.container.animate(anim,
627 				(typeof duration === 'number' || typeof duration === 'string')
628 					? duration : 500,
629 				'easeOutExpo');
630 
631 			if (!this.settings.overlayPage) {
632 				$('body').animate(
633 					isRight ? {marginRight: '-=' + this.width}
634 					        : {marginLeft: '-=' + this.width},
635 					500, 'easeOutExpo');
636 			}
637 
638 			this.isOpen = false;
639 
640 			return this;
641 		},
642 
643 		/**
644 		 * Activates the given panel and passes to it the given element as the
645 		 * the effective that we want it to think activated it.
646 		 *
647 		 * @param {object|String} panel Panel instance or the id of a panel
648 		 *								object.
649 		 * @param {jQuery} element Element to pass to the panel as effective
650 		 *	                       element (the element that activated it).
651 		 */
652 		activatePanel: function (panel, element) {
653 			if (typeof panel === 'string') {
654 				panel = this.getPanelById(panel);
655 			}
656 
657 			if (panel) {
658 				panel.activate(element);
659 			}
660 
661 			this.roundCorners();
662 
663 			return this;
664 		},
665 
666 		/**
667 		 * Invokes the expand method for the given panel so that it expands its
668 		 * height to display its contents
669 		 *
670 		 * @param {object|String} panel Panel instance or the id of a panel
671 		 *                              object.
672 		 * @param {funtion} callback
673 		 */
674 		expandPanel: function (panel, callback) {
675 			if (typeof panel === 'string') {
676 				panel = this.getPanelById(panel);
677 			}
678 
679 			if (panel) {
680 				panel.expand(callback);
681 			}
682 
683 			return this;
684 		},
685 
686 687 		/**
688 		 * Collapses the panel contents by invoking the given panel's collapse
689 		 * method.
690 		 *
691 		 * @param {object|String} panel Panel instance or the id of a panel
692 		 *								object.
693 		 * @param {funtion} callback
694 		 */
695 		collapsePanel: function (panel, callback) {
696 			if (typeof panel === 'string') {
697 				panel = this.getPanelById(panel);
698 			}
699 
700 			if (panel) {
701 				panel.collapse(callback);
702 			}
703 
704 			return this;
705 		},
706 
707 		/**
708 		 * Adds a panel to this sidebar instance.
709 		 * We try and build as much of the panel DOM as we can before inserting
710 		 * it into the DOM in order to reduce reflow.
711 		 *
712 		 * @param {object} panel - either a panel instance or an associative
713 		 *			   array containing settings for the construction
714 		 *			   of a new panel.
715 		 * @param {boolean} deferRounding - (Optional) If true, the rounding-off
716 		 *				    of the top most and bottom most panels
717 		 *				    will not be automatically done. Set
718 		 *				    this to true when adding a lot of panels
719 		 *				    at once.
720 		 * @return {object} The newly created panel.
721 		 */
722 		addPanel: function (panel, deferRounding) {
723 			if (!(panel instanceof Panel)) {
724 				if (!panel.width) {
725 					panel.width = this.width;
726 				}
727 				panel.sidebar = this;
728 				panel = new Panel(panel);
729 			}
730 
731 			this.panels[panel.id] = panel;
732 			this.container.find('.aloha-sidebar-panels').append(panel.element);
733 			this.checkActivePanels(Selection.getRangeObject());
734 			return panel;
735 		}
736 
737 	});
738 
739 	// ------------------------------------------------------------------------
740 	// Panel prototype
741 	// ------------------------------------------------------------------------
742 	$.extend(Panel.prototype, {
743 
744 		init: function (opts) {
745 			this.setTitle(opts.title).setContent(opts.content);
746 
747 			delete opts.title;
748 			delete opts.content;
749 
750 			$.extend(this, opts);
751 
752 			if (!this.id) {
753 				this.id = 'aloha-sidebar-' + (++uid);
754 			}
755 
756 			var li = this.element =
757 				$('<li id="' + this.id + '">').append(this.title, this.content);
758 
759 			if (this.expanded) {
760 				this.content.height('auto');
761 			}
762 
763 764 			this.toggleTitleIcon(this.expanded);
765 			this.coerceActiveOn();
766 
767 			// Disable text selection on title element.
768 			this.title
769 				.attr('unselectable', 'on')
770 				.css('-moz-user-select', 'none')
771 				.each(function () { this.onselectstart = function () { return false; }; });
772 
773 			if (typeof this.onInit === 'function') {
774 				this.onInit.apply(this);
775 			}
776 		},
777 
778 		/**
779 780 		 * @param {boolean} isExpanded Whether or not the panel is in an
781 		 *                             expanded state.
782 		 */
783 		toggleTitleIcon: function (isExpanded) {
784 			if (this.sidebar.settings.rotateIcons) {
785 				this.rotateTitleIcon(isExpanded ? 90 : 0);
786 			} else {
787 				var icon = this.title.find('.aloha-sidebar-panel-title-arrow');
788 
789 				if (isExpanded) {
790 					icon.addClass('aloha-sidebar-panel-title-arrow-down');
791 				} else {
792 					icon.removeClass('aloha-sidebar-panel-title-arrow-down');
793 				}
794 			}
795 		},
796 
797 		/**
798 		 * Normalizes the activeOn property into a predicate function.
799 		 */
800 		coerceActiveOn: function () {
801 			if (typeof this.activeOn !== 'function') {
802 				var activeOn = this.activeOn;
803 
804 				this.activeOn = (function () {
805 					var typeofActiveOn = typeof activeOn,
806 						fn;
807 
808 					if (typeofActiveOn === 'boolean') {
809 						fn = function () {
810 							return activeOn;
811 						};
812 					} else if (typeofActiveOn === 'undefined') {
813 						fn = function () {
814 							return true;
815 						};
816 					} else if (typeofActiveOn === 'string') {
817 						fn = function (el) {
818 							return el ? el.is(activeOn) : false;
819 						};
820 					} else {
821 						fn = function () {
822 							return false;
823 						};
824 					}
825 
826 					return fn;
827 				}());
828 			}
829 		},
830 
831 		/**
832 		 * Activates (displays) this panel.
833 		 */
834 		activate: function (effective) {
835 			this.isActive = true;
836 			this.content.parent('li').show().removeClass('aloha-sidebar-deactivated');
837 			this.effectiveElement = effective;
838 			if (typeof this.onActivate === 'function') {
839 				this.onActivate.call(this, effective);
840 			}
841 		},
842 
843 		/**
844 		 * Hides this panel.
845 		 */
846 		deactivate: function () {
847 			if (!this.isActive) {
848 				return;
849 			}
850 			this.isActive = false;
851 			this.content.parent('li').hide().addClass('aloha-sidebar-deactivated');
852 			this.effectiveElement = null;
853 		},
854 
855 		toggle: function () {
856 			if (this.expanded) {
857 				this.collapse();
858 			} else {
859 				this.expand();
860 			}
861 		},
862 
863 		/**
864 		 * Displays the panel's contents.
865 		 */
866 		expand: function (callback) {
867 			var that = this;
868 			var el = this.content;
869 			var old_h = el.height();
870 			var new_h = el.height('auto').height();
871 872 			el.height(old_h).stop().animate(
873 				{height: new_h}, 500, 'easeOutExpo',
874 				function () {
875 					if (typeof callback === 'function') {
876 						callback.call(that);
877 					}
878 				}
879 			);
880 			this.element.removeClass('collapsed');
881 			this.toggleTitleIcon(true);
882 			this.expanded = true;
883 			return this;
884 		},
885 
886 		/**
887 		 * Hides the panel's contents--leaving only it's header.
888 		 */
889 		collapse: function (duration, callback) {
890 			var that = this;
891 			this.element.addClass('collapsed');
892 			this.content.stop().animate({height: 5}, 250, 'easeOutExpo',
893 				function () {
894 					if (typeof callback === 'function') {
895 						callback.call(that);
896 					}
897 				});
898 			this.toggleTitleIcon(false);
899 			this.expanded = false;
900 			return this;
901 		},
902 
903 		/**
904 		 * May also be called by the Sidebar to update title of panel
905 		 *
906 		 * @param {string} html Markup string, DOM object, or jQuery object.
907 		 */
908 		setTitle: function (html) {
909 			this.title.find('.aloha-sidebar-panel-title-text').html(html);
910 			return this;
911 		},
912 
913 		/**
914 		 * May also be called by the Sidebar to update content of panel
915 		 *
916 		 * @param {string|jQuery.<HTMLElement>|HTMLElement} html Markup string,
917 		 *                                                       DOM object, or
918 		 *                                                       jQuery object.
919 		 */
920 		setContent: function (html) {
921 			// We do this so that empty panels don't appear collapsed
922 			if (!html || html === '') {
923 				html = ' ';
924 			}
925 
926 			this.content.find('.aloha-sidebar-panel-content-inner-text').html(html);
927 			return this;
928 		},
929 
930 		rotateTitleIcon: function (angle, duration) {
931 			var arr = this.title.find('.aloha-sidebar-panel-title-arrow');
932 			arr.animate({angle: angle}, {
933 				duration : (typeof duration === 'number') ? duration : 500,
934 				easing   : 'easeOutExpo',
935 				step     : function (val, fx) {
936 					arr.css({
937 						'-o-transform'      : 'rotate(' + val + 'deg)',
938 						'-webkit-transform' : 'rotate(' + val + 'deg)',
939 						'-moz-transform'    : 'rotate(' + val + 'deg)',
940 						'-ms-transform'     : 'rotate(' + val + 'deg)'
941 					 // filter              : 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (angle / 90) + ')'
942 					});
943 				}
944 			});
945 		},
946 
947 		/**
948 		 * Walks up the ancestors chain for the given effective element, and
949 		 * renders subpanels using the specified renderer function.
950 		 *
951 		 * @param {jQuery.<HTMLElement>} effective The effective element, whose
952 		 *                                         lineage we want to render.
953 		 * @param {function} renderer (Optional) function that will render each
954 		 *                                       element in the parental
955 		 *                                       lineage of the effective
956 		 *                                       element.
957 		 */
958 		renderEffectiveParents: function (effective, renderer) {
959 			var el = effective.first();
960 			var content = [];
961 			var path = [];
962 			var activeOn = this.activeOn;
963 			var l;
964 			var pathRev;
965 966 
			while (el.length > 0 && !el.is('.aloha-editable')) {
967 				if (activeOn(el)) {
968 					path.push('<span>' + el[0].tagName.toLowerCase() + '</span>');
969 					l = path.length;
970 					pathRev = [];
971 					while (l--) {
972 						pathRev.push(path[l]);
973 					}
974 					content.push('<div class="aloha-sidebar-panel-parent">' +
975 						'<div class="aloha-sidebar-panel-parent-path">' +
976 							pathRev.join('') +
977 						'</div>' +
978 						'<div class="aloha-sidebar-panel-parent-content' +
979 							'aloha-sidebar-opened">' + (
980 							(typeof renderer === 'function')
981 								? renderer(el)
982 								: '----'
983 							) +
984 						'</div>' +
985 					 '</div>');
986 				}
987 				el = el.parent();
988 			}
989 
990 			this.setContent(content.join(''));
991 
992 			$('.aloha-sidebar-panel-parent-path').click(function () {
993 				var $content = $(this).parent().find(
994 					'.aloha-sidebar-panel-parent-content');
995 				if ($content.hasClass('aloha-sidebar-opened')) {
996 					$content.hide().removeClass('aloha-sidebar-opened');
997 				} else {
998 					$content.show().addClass('aloha-sidebar-opened');
999 				}
1000 			});
1001 
1002 			this.content.height('auto').find(
1003 				'.aloha-sidebar-panel-content-inner').height('auto');
1004 		}
1005 
1006 	});
1007 
1008 	var left = new Sidebar({
1009 		position : 'left',
1010 		width	 : 250 // TODO define in config
1011 	});
1012 
1013 	var right = new Sidebar({
1014 		position : 'right',
1015 		width	 : 250 // TODO define in config
1016 	});
1017 
1018 	Aloha.Sidebar = {
1019 		left  : left,
1020 		right : right
1021 	};
1022 
1023 	return Aloha.Sidebar;
1024 });
1025