define([
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"dojo/_base/array", // array.filter array.forEach array.map
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"dojo/cookie", // cookie
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"dojo/_base/declare", // declare
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"dojo/dom-class", // domClass.add domClass.remove domClass.toggle
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"dojo/dom-construct", // domConstruct.destroy domConstruct.place
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"dojo/dom-geometry", // domGeometry.marginBox
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"dojo/dom-style", // domStyle.style
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"dojo/keys",
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"dojo/_base/lang", // getObject() hitch() delegate()
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"dojo/on",
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"dojo/touch",
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"../_WidgetBase",
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"../_Widget",
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"../_TemplatedMixin",
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"./LayoutContainer",
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"./utils" // layoutUtils.layoutChildren
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], function(array, cookie, declare, domClass, domConstruct, domGeometry, domStyle, keys, lang, on, touch,
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_WidgetBase, _Widget, _TemplatedMixin, LayoutContainer, layoutUtils){
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// module:
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// dijit/layout/BorderContainer
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var _Splitter = declare("dijit.layout._Splitter", [_Widget, _TemplatedMixin ], {
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// summary:
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// A draggable spacer between two items in a `dijit/layout/BorderContainer`.
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// description:
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// This is instantiated by `dijit/layout/BorderContainer`. Users should not
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// create it directly.
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// tags:
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// private
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/*=====
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// container: [const] dijit/layout/BorderContainer
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// Pointer to the parent BorderContainer
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container: null,
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// child: [const] dijit/layout/_LayoutWidget
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// Pointer to the pane associated with this splitter
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child: null,
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// region: [const] String
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// Region of pane associated with this splitter.
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// "top", "bottom", "left", "right".
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region: null,
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=====*/
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// live: [const] Boolean
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// If true, the child's size changes and the child widget is redrawn as you drag the splitter;
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// otherwise, the size doesn't change until you drop the splitter (by mouse-up)
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live: true,
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templateString: '<div class="dijitSplitter" data-dojo-attach-event="onkeydown:_onKeyDown,press:_startDrag,onmouseenter:_onMouse,onmouseleave:_onMouse" tabIndex="0" role="separator"><div class="dijitSplitterThumb"></div></div>',
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constructor: function(){
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this._handlers = [];
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},
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postMixInProperties: function(){
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this.inherited(arguments);
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this.horizontal = /top|bottom/.test(this.region);
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this._factor = /top|left/.test(this.region) ? 1 : -1;
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this._cookieName = this.container.id + "_" + this.region;
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},
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buildRendering: function(){
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this.inherited(arguments);
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domClass.add(this.domNode, "dijitSplitter" + (this.horizontal ? "H" : "V"));
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if(this.container.persist){
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// restore old size
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var persistSize = cookie(this._cookieName);
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if(persistSize){
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this.child.domNode.style[this.horizontal ? "height" : "width"] = persistSize;
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}
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}
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},
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_computeMaxSize: function(){
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// summary:
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// Return the maximum size that my corresponding pane can be set to
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var dim = this.horizontal ? 'h' : 'w',
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childSize = domGeometry.getMarginBox(this.child.domNode)[dim],
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center = array.filter(this.container.getChildren(), function(child){
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return child.region == "center";
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})[0];
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// Can expand until center is crushed. But always leave room for center's padding + border,
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// otherwise on the next call domGeometry methods start to lie about size.
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var spaceAvailable = domGeometry.getContentBox(center.domNode)[dim] - 10;
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return Math.min(this.child.maxSize, childSize + spaceAvailable);
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},
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_startDrag: function(e){
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if(!this.cover){
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this.cover = domConstruct.place("<div class=dijitSplitterCover></div>", this.child.domNode, "after");
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}
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domClass.add(this.cover, "dijitSplitterCoverActive");
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// Safeguard in case the stop event was missed. Shouldn't be necessary if we always get the mouse up.
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if(this.fake){
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domConstruct.destroy(this.fake);
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}
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if(!(this._resize = this.live)){ //TODO: disable live for IE6?
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// create fake splitter to display at old position while we drag
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(this.fake = this.domNode.cloneNode(true)).removeAttribute("id");
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domClass.add(this.domNode, "dijitSplitterShadow");
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domConstruct.place(this.fake, this.domNode, "after");
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}
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domClass.add(this.domNode, "dijitSplitterActive dijitSplitter" + (this.horizontal ? "H" : "V") + "Active");
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if(this.fake){
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domClass.remove(this.fake, "dijitSplitterHover dijitSplitter" + (this.horizontal ? "H" : "V") + "Hover");
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}
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//Performance: load data info local vars for onmousevent function closure
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var factor = this._factor,
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isHorizontal = this.horizontal,
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axis = isHorizontal ? "pageY" : "pageX",
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pageStart = e[axis],
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splitterStyle = this.domNode.style,
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dim = isHorizontal ? 'h' : 'w',
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childCS = domStyle.getComputedStyle(this.child.domNode),
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childStart = domGeometry.getMarginBox(this.child.domNode, childCS)[dim],
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max = this._computeMaxSize(),
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min = Math.max(this.child.minSize, domGeometry.getPadBorderExtents(this.child.domNode, childCS)[dim] + 10),
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region = this.region,
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splitterAttr = region == "top" || region == "bottom" ? "top" : "left", // style attribute of splitter to adjust
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splitterStart = parseInt(splitterStyle[splitterAttr], 10),
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resize = this._resize,
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layoutFunc = lang.hitch(this.container, "_layoutChildren", this.child.id),
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de = this.ownerDocument;
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this._handlers = this._handlers.concat([
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on(de, touch.move, this._drag = function(e, forceResize){
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var delta = e[axis] - pageStart,
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childSize = factor * delta + childStart,
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boundChildSize = Math.max(Math.min(childSize, max), min);
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if(resize || forceResize){
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layoutFunc(boundChildSize);
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}
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// TODO: setting style directly (usually) sets content box size, need to set margin box size
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splitterStyle[splitterAttr] = delta + splitterStart + factor * (boundChildSize - childSize) + "px";
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}),
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on(de, "dragstart", function(e){
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e.stopPropagation();
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e.preventDefault();
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}),
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on(this.ownerDocumentBody, "selectstart", function(e){
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e.stopPropagation();
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e.preventDefault();
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}),
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on(de, touch.release, lang.hitch(this, "_stopDrag"))
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]);
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e.stopPropagation();
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e.preventDefault();
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},
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_onMouse: function(e){
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// summary:
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// Handler for onmouseenter / onmouseleave events
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var o = (e.type == "mouseover" || e.type == "mouseenter");
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domClass.toggle(this.domNode, "dijitSplitterHover", o);
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domClass.toggle(this.domNode, "dijitSplitter" + (this.horizontal ? "H" : "V") + "Hover", o);
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},
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_stopDrag: function(e){
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try{
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if(this.cover){
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domClass.remove(this.cover, "dijitSplitterCoverActive");
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}
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if(this.fake){
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domConstruct.destroy(this.fake);
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}
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domClass.remove(this.domNode, "dijitSplitterActive dijitSplitter"
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+ (this.horizontal ? "H" : "V") + "Active dijitSplitterShadow");
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this._drag(e); //TODO: redundant with onmousemove?
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this._drag(e, true);
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}finally{
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this._cleanupHandlers();
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delete this._drag;
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}
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if(this.container.persist){
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cookie(this._cookieName, this.child.domNode.style[this.horizontal ? "height" : "width"], {expires: 365});
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}
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},
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_cleanupHandlers: function(){
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var h;
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while(h = this._handlers.pop()){
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h.remove();
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}
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},
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_onKeyDown: function(/*Event*/ e){
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// should we apply typematic to this?
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this._resize = true;
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var horizontal = this.horizontal;
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var tick = 1;
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switch(e.keyCode){
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case horizontal ? keys.UP_ARROW : keys.LEFT_ARROW:
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tick *= -1;
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// break;
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case horizontal ? keys.DOWN_ARROW : keys.RIGHT_ARROW:
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break;
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default:
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// this.inherited(arguments);
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return;
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}
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var childSize = domGeometry.getMarginSize(this.child.domNode)[ horizontal ? 'h' : 'w' ] + this._factor * tick;
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this.container._layoutChildren(this.child.id, Math.max(Math.min(childSize, this._computeMaxSize()), this.child.minSize));
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e.stopPropagation();
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e.preventDefault();
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},
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destroy: function(){
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this._cleanupHandlers();
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delete this.child;
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delete this.container;
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delete this.cover;
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delete this.fake;
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this.inherited(arguments);
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}
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});
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var _Gutter = declare("dijit.layout._Gutter", [_Widget, _TemplatedMixin], {
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// summary:
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// Just a spacer div to separate side pane from center pane.
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// Basically a trick to lookup the gutter/splitter width from the theme.
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// description:
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// Instantiated by `dijit/layout/BorderContainer`. Users should not
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// create directly.
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// tags:
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// private
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templateString: '<div class="dijitGutter" role="presentation"></div>',
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postMixInProperties: function(){
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this.inherited(arguments);
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this.horizontal = /top|bottom/.test(this.region);
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},
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buildRendering: function(){
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this.inherited(arguments);
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domClass.add(this.domNode, "dijitGutter" + (this.horizontal ? "H" : "V"));
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}
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});
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var BorderContainer = declare("dijit.layout.BorderContainer", LayoutContainer, {
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// summary:
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// A BorderContainer is a `dijit/LayoutContainer` that can have draggable splitters between the children,
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// in order to adjust their sizes.
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//
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// In addition, it automatically adds some space between the children even
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// if they don't have a draggable splitter between them, and space between the edge of the BorderContainer
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// and the children that are adjacent to the edge. Note that the intended style is that all the children
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// have borders, but (despite the name) the BorderContainer itself does not.
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//
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// See `BorderContainer.ChildWidgetProperties` for details on the properties that can be set on
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// children of a `BorderContainer`.
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// gutters: [const] Boolean
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// Give each pane a border and margin.
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// Margin determined by domNode.paddingLeft.
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// When false, only resizable panes have a gutter (i.e. draggable splitter) for resizing.
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gutters: true,
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// liveSplitters: [const] Boolean
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// Specifies whether splitters resize as you drag (true) or only upon mouseup (false)
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liveSplitters: true,
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// persist: Boolean
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// Save splitter positions in a cookie.
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persist: false,
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baseClass: "dijitBorderContainer",
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// _splitterClass: Function||String
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// Optional hook to override the default Splitter widget used by BorderContainer
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_splitterClass: _Splitter,
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postMixInProperties: function(){
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// change class name to indicate that BorderContainer is being used purely for
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// layout (like LayoutContainer) rather than for pretty formatting.
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if(!this.gutters){
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this.baseClass += "NoGutter";
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}
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this.inherited(arguments);
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},
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_setupChild: function(/*dijit/_WidgetBase*/ child){
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// Override LayoutContainer._setupChild().
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this.inherited(arguments);
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var region = child.region, ltr = child.isLeftToRight();
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if(region == "leading"){
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region = ltr ? "left" : "right";
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}
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if(region == "trailing"){
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region = ltr ? "right" : "left";
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}
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if(region){
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// Create draggable splitter for resizing pane,
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// or alternately if splitter=false but BorderContainer.gutters=true then
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// insert dummy div just for spacing
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if(region != "center" && (child.splitter || this.gutters) && !child._splitterWidget){
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var _Splitter = child.splitter ? this._splitterClass : _Gutter;
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if(lang.isString(_Splitter)){
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_Splitter = lang.getObject(_Splitter); // for back-compat, remove in 2.0
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}
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var splitter = new _Splitter({
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id: child.id + "_splitter",
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container: this,
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child: child,
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region: region,
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live: this.liveSplitters
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});
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splitter.isSplitter = true;
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child._splitterWidget = splitter;
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// Make the tab order match the visual layout by placing the splitter before or after the pane,
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// depending on where the splitter is visually compared to the pane.
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var before = region == "bottom" || region == (this.isLeftToRight() ? "right" : "left");
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domConstruct.place(splitter.domNode, child.domNode, before ? "before" : "after");
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// Splitters aren't added as Contained children, so we need to call startup explicitly
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splitter.startup();
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}
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}
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},
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layout: function(){
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// Implement _LayoutWidget.layout() virtual method.
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this._layoutChildren();
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},
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removeChild: function(/*dijit/_WidgetBase*/ child){
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// Override _LayoutWidget.removeChild().
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var splitter = child._splitterWidget;
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if(splitter){
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splitter.destroy();
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delete child._splitterWidget;
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}
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this.inherited(arguments);
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},
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getChildren: function(){
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// Override _LayoutWidget.getChildren() to only return real children, not the splitters.
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return array.filter(this.inherited(arguments), function(widget){
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return !widget.isSplitter;
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});
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},
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// TODO: remove in 2.0
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getSplitter: function(/*String*/region){
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// summary:
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// Returns the widget responsible for rendering the splitter associated with region
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// tags:
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// deprecated
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return array.filter(this.getChildren(), function(child){
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return child.region == region;
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})[0]._splitterWidget;
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},
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resize: function(newSize, currentSize){
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// Overrides _LayoutWidget.resize().
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// resetting potential padding to 0px to provide support for 100% width/height + padding
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// TODO: this hack doesn't respect the box model and is a temporary fix
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if(!this.cs || !this.pe){
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var node = this.domNode;
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this.cs = domStyle.getComputedStyle(node);
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this.pe = domGeometry.getPadExtents(node, this.cs);
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this.pe.r = domStyle.toPixelValue(node, this.cs.paddingRight);
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this.pe.b = domStyle.toPixelValue(node, this.cs.paddingBottom);
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domStyle.set(node, "padding", "0px");
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}
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this.inherited(arguments);
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},
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_layoutChildren: function(/*String?*/ changedChildId, /*Number?*/ changedChildSize){
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// summary:
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// This is the main routine for setting size/position of each child.
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// description:
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// With no arguments, measures the height of top/bottom panes, the width
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// of left/right panes, and then sizes all panes accordingly.
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//
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// With changedRegion specified (as "left", "top", "bottom", or "right"),
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// it changes that region's width/height to changedRegionSize and
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// then resizes other regions that were affected.
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// changedChildId:
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// Id of the child which should be resized because splitter was dragged.
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// changedChildSize:
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// The new width/height (in pixels) to make specified child
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if(!this._borderBox || !this._borderBox.h){
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// We are currently hidden, or we haven't been sized by our parent yet.
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// Abort. Someone will resize us later.
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return;
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}
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// Combining the externally specified children with splitters and gutters
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var childrenAndSplitters = [];
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array.forEach(this._getOrderedChildren(), function(pane){
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childrenAndSplitters.push(pane);
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if(pane._splitterWidget){
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childrenAndSplitters.push(pane._splitterWidget);
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}
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});
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// Compute the box in which to lay out my children
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var dim = {
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l: this.pe.l,
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t: this.pe.t,
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w: this._borderBox.w - this.pe.w,
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h: this._borderBox.h - this.pe.h
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};
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// Layout the children, possibly changing size due to a splitter drag
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layoutUtils.layoutChildren(this.domNode, dim, childrenAndSplitters,
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changedChildId, changedChildSize);
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},
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destroyRecursive: function(){
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// Destroy splitters first, while getChildren() still works
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array.forEach(this.getChildren(), function(child){
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var splitter = child._splitterWidget;
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if(splitter){
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splitter.destroy();
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}
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delete child._splitterWidget;
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});
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// Then destroy the real children, and myself
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this.inherited(arguments);
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}
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});
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BorderContainer.ChildWidgetProperties = {
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// summary:
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// These properties can be specified for the children of a BorderContainer.
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// splitter: [const] Boolean
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// Parameter for children where region != "center".
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// If true, enables user to resize the widget by putting a draggable splitter between
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// this widget and the region=center widget.
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splitter: false,
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// minSize: [const] Number
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// Specifies a minimum size (in pixels) for this widget when resized by a splitter.
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minSize: 0,
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// maxSize: [const] Number
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// Specifies a maximum size (in pixels) for this widget when resized by a splitter.
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maxSize: Infinity
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};
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lang.mixin(BorderContainer.ChildWidgetProperties, LayoutContainer.ChildWidgetProperties);
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// Since any widget can be specified as a BorderContainer child, mix it
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// into the base widget class. (This is a hack, but it's effective.)
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// This is for the benefit of the parser. Remove for 2.0. Also, hide from doc viewer.
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lang.extend(_WidgetBase, /*===== {} || =====*/ BorderContainer.ChildWidgetProperties);
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// For monkey patching
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BorderContainer._Splitter = _Splitter;
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BorderContainer._Gutter = _Gutter;
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return BorderContainer;
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});
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