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528 lines
18 KiB
JavaScript
528 lines
18 KiB
JavaScript
/*
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Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dijit.layout.BorderContainer"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dijit.layout.BorderContainer"] = true;
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dojo.provide("dijit.layout.BorderContainer");
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dojo.require("dijit.layout._LayoutWidget");
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dojo.require("dojo.cookie");
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dojo.require("dijit._Templated");
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dojo.declare(
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"dijit.layout.BorderContainer",
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dijit.layout._LayoutWidget,
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{
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// summary:
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// Provides layout in up to 5 regions, a mandatory center with optional borders along its 4 sides.
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//
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// description:
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// A BorderContainer is a box with a specified size, such as style="width: 500px; height: 500px;",
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// that contains a child widget marked region="center" and optionally children widgets marked
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// region equal to "top", "bottom", "leading", "trailing", "left" or "right".
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// Children along the edges will be laid out according to width or height dimensions and may
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// include optional splitters (splitter="true") to make them resizable by the user. The remaining
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// space is designated for the center region.
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//
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// The outer size must be specified on the BorderContainer node. Width must be specified for the sides
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// and height for the top and bottom, respectively. No dimensions should be specified on the center;
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// it will fill the remaining space. Regions named "leading" and "trailing" may be used just like
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// "left" and "right" except that they will be reversed in right-to-left environments.
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//
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// For complex layouts, multiple children can be specified for a single region. In this case, the
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// layoutPriority flag on the children determines which child is closer to the edge (low layoutPriority)
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// and which child is closer to the center (high layoutPriority). layoutPriority can also be used
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// instead of the design attribute to conrol layout precedence of horizontal vs. vertical panes.
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// example:
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// | <div dojoType="dijit.layout.BorderContainer" design="sidebar" gutters="false"
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// | style="width: 400px; height: 300px;">
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// | <div dojoType="dijit.layout.ContentPane" region="top">header text</div>
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// | <div dojoType="dijit.layout.ContentPane" region="right" splitter="true" style="width: 200px;">table of contents</div>
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// | <div dojoType="dijit.layout.ContentPane" region="center">client area</div>
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// | </div>
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// design: String
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// Which design is used for the layout:
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// - "headline" (default) where the top and bottom extend
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// the full width of the container
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// - "sidebar" where the left and right sides extend from top to bottom.
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design: "headline",
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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: String
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// Optional hook to override the default Splitter widget used by BorderContainer
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_splitterClass: "dijit.layout._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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startup: function(){
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if(this._started){ return; }
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dojo.forEach(this.getChildren(), this._setupChild, this);
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this.inherited(arguments);
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},
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_setupChild: function(/*dijit._Widget*/ child){
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// Override _LayoutWidget._setupChild().
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var region = child.region;
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if(region){
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this.inherited(arguments);
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dojo.addClass(child.domNode, this.baseClass+"Pane");
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var ltr = this.isLeftToRight();
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if(region == "leading"){ region = ltr ? "left" : "right"; }
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if(region == "trailing"){ region = ltr ? "right" : "left"; }
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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 = dojo.getObject(child.splitter ? this._splitterClass : "dijit.layout._Gutter");
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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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dojo.place(splitter.domNode, child.domNode, "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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child.region = region; // TODO: technically wrong since it overwrites "trailing" with "left" etc.
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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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addChild: function(/*dijit._Widget*/ child, /*Integer?*/ insertIndex){
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// Override _LayoutWidget.addChild().
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this.inherited(arguments);
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if(this._started){
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this.layout(); //OPT
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}
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},
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removeChild: function(/*dijit._Widget*/ child){
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// Override _LayoutWidget.removeChild().
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var region = child.region;
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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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if(this._started){
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this._layoutChildren();
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}
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// Clean up whatever style changes we made to the child pane.
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// Unclear how height and width should be handled.
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dojo.removeClass(child.domNode, this.baseClass+"Pane");
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dojo.style(child.domNode, {
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top: "auto",
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bottom: "auto",
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left: "auto",
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right: "auto",
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position: "static"
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});
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dojo.style(child.domNode, region == "top" || region == "bottom" ? "width" : "height", "auto");
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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 dojo.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 dojo.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 = dojo.getComputedStyle(node);
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this.pe = dojo._getPadExtents(node, this.cs);
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this.pe.r = dojo._toPixelValue(node, this.cs.paddingRight);
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this.pe.b = dojo._toPixelValue(node, this.cs.paddingBottom);
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dojo.style(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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// Generate list of wrappers of my children in the order that I want layoutChildren()
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// to process them (i.e. from the outside to the inside)
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var wrappers = dojo.map(this.getChildren(), function(child, idx){
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return {
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pane: child,
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weight: [
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child.region == "center" ? Infinity : 0,
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child.layoutPriority,
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(this.design == "sidebar" ? 1 : -1) * (/top|bottom/.test(child.region) ? 1 : -1),
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idx
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]
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};
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}, this);
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wrappers.sort(function(a, b){
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var aw = a.weight, bw = b.weight;
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for(var i=0; i<aw.length; i++){
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if(aw[i] != bw[i]){
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return aw[i] - bw[i];
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}
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}
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return 0;
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});
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// Make new list, combining the externally specified children with splitters and gutters
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var childrenAndSplitters = [];
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dojo.forEach(wrappers, function(wrapper){
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var pane = wrapper.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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dijit.layout.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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dojo.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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// This argument can be specified for the children of a BorderContainer.
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// Since any widget can be specified as a LayoutContainer child, mix it
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// into the base widget class. (This is a hack, but it's effective.)
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dojo.extend(dijit._Widget, {
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// region: [const] String
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// Parameter for children of `dijit.layout.BorderContainer`.
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// Values: "top", "bottom", "leading", "trailing", "left", "right", "center".
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// See the `dijit.layout.BorderContainer` description for details.
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region: '',
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// layoutPriority: [const] Number
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// Parameter for children of `dijit.layout.BorderContainer`.
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// Children with a higher layoutPriority will be placed closer to the BorderContainer center,
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// between children with a lower layoutPriority.
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layoutPriority: 0,
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// splitter: [const] Boolean
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// Parameter for child of `dijit.layout.BorderContainer` 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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// Parameter for children of `dijit.layout.BorderContainer`.
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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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// Parameter for children of `dijit.layout.BorderContainer`.
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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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dojo.declare("dijit.layout._Splitter", [ dijit._Widget, dijit._Templated ],
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{
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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" dojoAttachEvent="onkeypress:_onKeyPress,onmousedown:_startDrag,onmouseenter:_onMouse,onmouseleave:_onMouse" tabIndex="0" role="separator"><div class="dijitSplitterThumb"></div></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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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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dojo.addClass(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 = dojo.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 = dojo.marginBox(this.child.domNode)[dim],
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center = dojo.filter(this.container.getChildren(), function(child){ return child.region == "center";})[0],
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spaceAvailable = dojo.marginBox(center.domNode)[dim]; // can expand until center is crushed to 0
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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 = dojo.doc.createElement('div');
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dojo.addClass(this.cover, "dijitSplitterCover");
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dojo.place(this.cover, this.child.domNode, "after");
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}
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dojo.addClass(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){ dojo.destroy(this.fake); }
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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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dojo.addClass(this.domNode, "dijitSplitterShadow");
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dojo.place(this.fake, this.domNode, "after");
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}
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dojo.addClass(this.domNode, "dijitSplitterActive dijitSplitter" + (this.horizontal ? "H" : "V") + "Active");
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if(this.fake){
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dojo.removeClass(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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childStart = dojo.marginBox(this.child.domNode)[dim],
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max = this._computeMaxSize(),
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min = this.child.minSize || 20,
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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 = dojo.hitch(this.container, "_layoutChildren", this.child.id),
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de = dojo.doc;
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this._handlers = (this._handlers || []).concat([
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dojo.connect(de, "onmousemove", 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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dojo.connect(de, "ondragstart", dojo.stopEvent),
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dojo.connect(dojo.body(), "onselectstart", dojo.stopEvent),
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dojo.connect(de, "onmouseup", this, "_stopDrag")
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]);
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dojo.stopEvent(e);
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},
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_onMouse: function(e){
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var o = (e.type == "mouseover" || e.type == "mouseenter");
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dojo.toggleClass(this.domNode, "dijitSplitterHover", o);
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dojo.toggleClass(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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dojo.removeClass(this.cover, "dijitSplitterCoverActive");
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}
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if(this.fake){ dojo.destroy(this.fake); }
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dojo.removeClass(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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dojo.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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dojo.forEach(this._handlers, dojo.disconnect);
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delete this._handlers;
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},
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_onKeyPress: function(/*Event*/ e){
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// should we apply typematic to this?
|
|
this._resize = true;
|
|
var horizontal = this.horizontal;
|
|
var tick = 1;
|
|
var dk = dojo.keys;
|
|
switch(e.charOrCode){
|
|
case horizontal ? dk.UP_ARROW : dk.LEFT_ARROW:
|
|
tick *= -1;
|
|
// break;
|
|
case horizontal ? dk.DOWN_ARROW : dk.RIGHT_ARROW:
|
|
break;
|
|
default:
|
|
// this.inherited(arguments);
|
|
return;
|
|
}
|
|
var childSize = dojo._getMarginSize(this.child.domNode)[ horizontal ? 'h' : 'w' ] + this._factor * tick;
|
|
this.container._layoutChildren(this.child.id, Math.max(Math.min(childSize, this._computeMaxSize()), this.child.minSize));
|
|
dojo.stopEvent(e);
|
|
},
|
|
|
|
destroy: function(){
|
|
this._cleanupHandlers();
|
|
delete this.child;
|
|
delete this.container;
|
|
delete this.cover;
|
|
delete this.fake;
|
|
this.inherited(arguments);
|
|
}
|
|
});
|
|
|
|
dojo.declare("dijit.layout._Gutter", [dijit._Widget, dijit._Templated],
|
|
{
|
|
// summary:
|
|
// Just a spacer div to separate side pane from center pane.
|
|
// Basically a trick to lookup the gutter/splitter width from the theme.
|
|
// description:
|
|
// Instantiated by `dijit.layout.BorderContainer`. Users should not
|
|
// create directly.
|
|
// tags:
|
|
// private
|
|
|
|
templateString: '<div class="dijitGutter" role="presentation"></div>',
|
|
|
|
postMixInProperties: function(){
|
|
this.inherited(arguments);
|
|
this.horizontal = /top|bottom/.test(this.region);
|
|
},
|
|
|
|
buildRendering: function(){
|
|
this.inherited(arguments);
|
|
dojo.addClass(this.domNode, "dijitGutter" + (this.horizontal ? "H" : "V"));
|
|
}
|
|
});
|
|
|
|
}
|