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441 lines
14 KiB
JavaScript
441 lines
14 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.Tooltip"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dijit.Tooltip"] = true;
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dojo.provide("dijit.Tooltip");
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dojo.require("dijit._Widget");
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dojo.require("dijit._Templated");
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dojo.declare(
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"dijit._MasterTooltip",
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[dijit._Widget, dijit._Templated],
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{
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// summary:
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// Internal widget that holds the actual tooltip markup,
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// which occurs once per page.
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// Called by Tooltip widgets which are just containers to hold
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// the markup
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// tags:
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// protected
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// duration: Integer
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// Milliseconds to fade in/fade out
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duration: dijit.defaultDuration,
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templateString: dojo.cache("dijit", "templates/Tooltip.html", "<div class=\"dijitTooltip dijitTooltipLeft\" id=\"dojoTooltip\"\n\t><div class=\"dijitTooltipContainer dijitTooltipContents\" dojoAttachPoint=\"containerNode\" role='alert'></div\n\t><div class=\"dijitTooltipConnector\" dojoAttachPoint=\"connectorNode\"></div\n></div>\n"),
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postCreate: function(){
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dojo.body().appendChild(this.domNode);
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this.bgIframe = new dijit.BackgroundIframe(this.domNode);
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// Setup fade-in and fade-out functions.
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this.fadeIn = dojo.fadeIn({ node: this.domNode, duration: this.duration, onEnd: dojo.hitch(this, "_onShow") });
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this.fadeOut = dojo.fadeOut({ node: this.domNode, duration: this.duration, onEnd: dojo.hitch(this, "_onHide") });
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},
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show: function(/*String*/ innerHTML, /*DomNode*/ aroundNode, /*String[]?*/ position, /*Boolean*/ rtl){
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// summary:
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// Display tooltip w/specified contents to right of specified node
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// (To left if there's no space on the right, or if rtl == true)
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if(this.aroundNode && this.aroundNode === aroundNode){
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return;
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}
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// reset width; it may have been set by orient() on a previous tooltip show()
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this.domNode.width = "auto";
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if(this.fadeOut.status() == "playing"){
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// previous tooltip is being hidden; wait until the hide completes then show new one
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this._onDeck=arguments;
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return;
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}
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this.containerNode.innerHTML=innerHTML;
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var pos = dijit.placeOnScreenAroundElement(this.domNode, aroundNode, dijit.getPopupAroundAlignment((position && position.length) ? position : dijit.Tooltip.defaultPosition, !rtl), dojo.hitch(this, "orient"));
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// show it
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dojo.style(this.domNode, "opacity", 0);
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this.fadeIn.play();
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this.isShowingNow = true;
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this.aroundNode = aroundNode;
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},
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orient: function(/*DomNode*/ node, /*String*/ aroundCorner, /*String*/ tooltipCorner, /*Object*/ spaceAvailable, /*Object*/ aroundNodeCoords){
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// summary:
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// Private function to set CSS for tooltip node based on which position it's in.
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// This is called by the dijit popup code. It will also reduce the tooltip's
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// width to whatever width is available
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// tags:
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// protected
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this.connectorNode.style.top = ""; //reset to default
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//Adjust the spaceAvailable width, without changing the spaceAvailable object
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var tooltipSpaceAvaliableWidth = spaceAvailable.w - this.connectorNode.offsetWidth;
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node.className = "dijitTooltip " +
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{
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"BL-TL": "dijitTooltipBelow dijitTooltipABLeft",
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"TL-BL": "dijitTooltipAbove dijitTooltipABLeft",
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"BR-TR": "dijitTooltipBelow dijitTooltipABRight",
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"TR-BR": "dijitTooltipAbove dijitTooltipABRight",
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"BR-BL": "dijitTooltipRight",
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"BL-BR": "dijitTooltipLeft"
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}[aroundCorner + "-" + tooltipCorner];
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// reduce tooltip's width to the amount of width available, so that it doesn't overflow screen
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this.domNode.style.width = "auto";
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var size = dojo.contentBox(this.domNode);
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var width = Math.min((Math.max(tooltipSpaceAvaliableWidth,1)), size.w);
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var widthWasReduced = width < size.w;
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this.domNode.style.width = width+"px";
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//Adjust width for tooltips that have a really long word or a nowrap setting
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if(widthWasReduced){
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this.containerNode.style.overflow = "auto"; //temp change to overflow to detect if our tooltip needs to be wider to support the content
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var scrollWidth = this.containerNode.scrollWidth;
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this.containerNode.style.overflow = "visible"; //change it back
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if(scrollWidth > width){
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scrollWidth = scrollWidth + dojo.style(this.domNode,"paddingLeft") + dojo.style(this.domNode,"paddingRight");
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this.domNode.style.width = scrollWidth + "px";
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}
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}
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// Reposition the tooltip connector.
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if(tooltipCorner.charAt(0) == 'B' && aroundCorner.charAt(0) == 'B'){
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var mb = dojo.marginBox(node);
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var tooltipConnectorHeight = this.connectorNode.offsetHeight;
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if(mb.h > spaceAvailable.h){
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// The tooltip starts at the top of the page and will extend past the aroundNode
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var aroundNodePlacement = spaceAvailable.h - (aroundNodeCoords.h / 2) - (tooltipConnectorHeight / 2);
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this.connectorNode.style.top = aroundNodePlacement + "px";
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this.connectorNode.style.bottom = "";
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}else{
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// Align center of connector with center of aroundNode, except don't let bottom
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// of connector extend below bottom of tooltip content, or top of connector
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// extend past top of tooltip content
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this.connectorNode.style.bottom = Math.min(
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Math.max(aroundNodeCoords.h/2 - tooltipConnectorHeight/2, 0),
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mb.h - tooltipConnectorHeight) + "px";
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this.connectorNode.style.top = "";
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}
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}else{
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// reset the tooltip back to the defaults
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this.connectorNode.style.top = "";
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this.connectorNode.style.bottom = "";
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}
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return Math.max(0, size.w - tooltipSpaceAvaliableWidth);
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},
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_onShow: function(){
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// summary:
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// Called at end of fade-in operation
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// tags:
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// protected
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if(dojo.isIE){
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// the arrow won't show up on a node w/an opacity filter
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this.domNode.style.filter="";
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}
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},
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hide: function(aroundNode){
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// summary:
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// Hide the tooltip
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if(this._onDeck && this._onDeck[1] == aroundNode){
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// this hide request is for a show() that hasn't even started yet;
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// just cancel the pending show()
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this._onDeck=null;
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}else if(this.aroundNode === aroundNode){
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// this hide request is for the currently displayed tooltip
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this.fadeIn.stop();
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this.isShowingNow = false;
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this.aroundNode = null;
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this.fadeOut.play();
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}else{
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// just ignore the call, it's for a tooltip that has already been erased
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}
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},
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_onHide: function(){
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// summary:
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// Called at end of fade-out operation
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// tags:
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// protected
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this.domNode.style.cssText=""; // to position offscreen again
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this.containerNode.innerHTML="";
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if(this._onDeck){
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// a show request has been queued up; do it now
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this.show.apply(this, this._onDeck);
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this._onDeck=null;
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}
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}
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}
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);
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dijit.showTooltip = function(/*String*/ innerHTML, /*DomNode*/ aroundNode, /*String[]?*/ position, /*Boolean*/ rtl){
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// summary:
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// Display tooltip w/specified contents in specified position.
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// See description of dijit.Tooltip.defaultPosition for details on position parameter.
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// If position is not specified then dijit.Tooltip.defaultPosition is used.
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if(!dijit._masterTT){ dijit._masterTT = new dijit._MasterTooltip(); }
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return dijit._masterTT.show(innerHTML, aroundNode, position, rtl);
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};
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dijit.hideTooltip = function(aroundNode){
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// summary:
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// Hide the tooltip
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if(!dijit._masterTT){ dijit._masterTT = new dijit._MasterTooltip(); }
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return dijit._masterTT.hide(aroundNode);
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};
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dojo.declare(
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"dijit.Tooltip",
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dijit._Widget,
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{
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// summary:
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// Pops up a tooltip (a help message) when you hover over a node.
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// label: String
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// Text to display in the tooltip.
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// Specified as innerHTML when creating the widget from markup.
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label: "",
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// showDelay: Integer
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// Number of milliseconds to wait after hovering over/focusing on the object, before
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// the tooltip is displayed.
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showDelay: 400,
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// connectId: String|String[]
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// Id of domNode(s) to attach the tooltip to.
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// When user hovers over specified dom node, the tooltip will appear.
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connectId: [],
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// position: String[]
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// See description of `dijit.Tooltip.defaultPosition` for details on position parameter.
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position: [],
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_setConnectIdAttr: function(/*String*/ newId){
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// summary:
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// Connect to node(s) (specified by id)
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// Remove connections to old nodes (if there are any)
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dojo.forEach(this._connections || [], function(nested){
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dojo.forEach(nested, dojo.hitch(this, "disconnect"));
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}, this);
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// Make connections to nodes in newIds.
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var ary = dojo.isArrayLike(newId) ? newId : (newId ? [newId] : []);
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this._connections = dojo.map(ary, function(id){
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var node = dojo.byId(id);
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return node ? [
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this.connect(node, "onmouseenter", "_onTargetMouseEnter"),
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this.connect(node, "onmouseleave", "_onTargetMouseLeave"),
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this.connect(node, "onfocus", "_onTargetFocus"),
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this.connect(node, "onblur", "_onTargetBlur")
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] : [];
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}, this);
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this._set("connectId", newId);
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this._connectIds = ary; // save as array
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},
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addTarget: function(/*DOMNODE || String*/ node){
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// summary:
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// Attach tooltip to specified node if it's not already connected
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// TODO: remove in 2.0 and just use set("connectId", ...) interface
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var id = node.id || node;
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if(dojo.indexOf(this._connectIds, id) == -1){
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this.set("connectId", this._connectIds.concat(id));
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}
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},
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removeTarget: function(/*DOMNODE || String*/ node){
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// summary:
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// Detach tooltip from specified node
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// TODO: remove in 2.0 and just use set("connectId", ...) interface
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var id = node.id || node, // map from DOMNode back to plain id string
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idx = dojo.indexOf(this._connectIds, id);
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if(idx >= 0){
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// remove id (modifies original this._connectIds but that's OK in this case)
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this._connectIds.splice(idx, 1);
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this.set("connectId", this._connectIds);
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}
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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,"dijitTooltipData");
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},
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startup: function(){
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this.inherited(arguments);
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// If this tooltip was created in a template, or for some other reason the specified connectId[s]
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// didn't exist during the widget's initialization, then connect now.
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var ids = this.connectId;
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dojo.forEach(dojo.isArrayLike(ids) ? ids : [ids], this.addTarget, this);
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},
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_onTargetMouseEnter: function(/*Event*/ e){
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// summary:
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// Handler for mouseenter event on the target node
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// tags:
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// private
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this._onHover(e);
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},
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_onTargetMouseLeave: function(/*Event*/ e){
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// summary:
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// Handler for mouseleave event on the target node
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// tags:
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// private
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this._onUnHover(e);
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},
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_onTargetFocus: function(/*Event*/ e){
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// summary:
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// Handler for focus event on the target node
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// tags:
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// private
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this._focus = true;
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this._onHover(e);
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},
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_onTargetBlur: function(/*Event*/ e){
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// summary:
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// Handler for blur event on the target node
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// tags:
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// private
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this._focus = false;
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this._onUnHover(e);
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},
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_onHover: function(/*Event*/ e){
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// summary:
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// Despite the name of this method, it actually handles both hover and focus
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// events on the target node, setting a timer to show the tooltip.
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// tags:
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// private
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if(!this._showTimer){
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var target = e.target;
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this._showTimer = setTimeout(dojo.hitch(this, function(){this.open(target)}), this.showDelay);
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}
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},
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_onUnHover: function(/*Event*/ e){
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// summary:
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// Despite the name of this method, it actually handles both mouseleave and blur
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// events on the target node, hiding the tooltip.
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// tags:
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// private
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// keep a tooltip open if the associated element still has focus (even though the
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// mouse moved away)
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if(this._focus){ return; }
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if(this._showTimer){
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clearTimeout(this._showTimer);
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delete this._showTimer;
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}
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this.close();
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},
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open: function(/*DomNode*/ target){
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// summary:
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// Display the tooltip; usually not called directly.
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// tags:
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// private
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if(this._showTimer){
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clearTimeout(this._showTimer);
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delete this._showTimer;
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}
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dijit.showTooltip(this.label || this.domNode.innerHTML, target, this.position, !this.isLeftToRight());
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this._connectNode = target;
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this.onShow(target, this.position);
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},
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close: function(){
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// summary:
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// Hide the tooltip or cancel timer for show of tooltip
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// tags:
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// private
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if(this._connectNode){
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// if tooltip is currently shown
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dijit.hideTooltip(this._connectNode);
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delete this._connectNode;
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this.onHide();
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}
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if(this._showTimer){
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// if tooltip is scheduled to be shown (after a brief delay)
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clearTimeout(this._showTimer);
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delete this._showTimer;
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}
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},
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onShow: function(target, position){
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// summary:
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// Called when the tooltip is shown
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// tags:
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// callback
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},
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onHide: function(){
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// summary:
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// Called when the tooltip is hidden
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// tags:
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// callback
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},
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uninitialize: function(){
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this.close();
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this.inherited(arguments);
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}
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}
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);
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// dijit.Tooltip.defaultPosition: String[]
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// This variable controls the position of tooltips, if the position is not specified to
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// the Tooltip widget or *TextBox widget itself. It's an array of strings with the following values:
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//
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// * before: places tooltip to the left of the target node/widget, or to the right in
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// the case of RTL scripts like Hebrew and Arabic
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// * after: places tooltip to the right of the target node/widget, or to the left in
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// the case of RTL scripts like Hebrew and Arabic
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// * above: tooltip goes above target node
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// * below: tooltip goes below target node
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//
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// The list is positions is tried, in order, until a position is found where the tooltip fits
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// within the viewport.
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//
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// Be careful setting this parameter. A value of "above" may work fine until the user scrolls
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// the screen so that there's no room above the target node. Nodes with drop downs, like
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// DropDownButton or FilteringSelect, are especially problematic, in that you need to be sure
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// that the drop down and tooltip don't overlap, even when the viewport is scrolled so that there
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// is only room below (or above) the target node, but not both.
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dijit.Tooltip.defaultPosition = ["after", "before"];
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}
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