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484 lines
17 KiB
JavaScript
484 lines
17 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.ScrollingTabController"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dijit.layout.ScrollingTabController"] = true;
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dojo.provide("dijit.layout.ScrollingTabController");
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dojo.require("dijit.layout.TabController");
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dojo.require("dijit.Menu");
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dojo.require("dijit.form.Button");
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dojo.require("dijit._HasDropDown");
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dojo.declare("dijit.layout.ScrollingTabController",
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dijit.layout.TabController,
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{
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// summary:
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// Set of tabs with left/right arrow keys and a menu to switch between tabs not
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// all fitting on a single row.
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// Works only for horizontal tabs (either above or below the content, not to the left
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// or right).
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// tags:
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// private
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templateString: dojo.cache("dijit.layout", "templates/ScrollingTabController.html", "<div class=\"dijitTabListContainer-${tabPosition}\" style=\"visibility:hidden\">\n\t<div dojoType=\"dijit.layout._ScrollingTabControllerMenuButton\"\n\t\t\tclass=\"tabStripButton-${tabPosition}\"\n\t\t\tid=\"${id}_menuBtn\" containerId=\"${containerId}\" iconClass=\"dijitTabStripMenuIcon\"\n\t\t\tdropDownPosition=\"below-alt, above-alt\"\n\t\t\tdojoAttachPoint=\"_menuBtn\" showLabel=\"false\">▼</div>\n\t<div dojoType=\"dijit.layout._ScrollingTabControllerButton\"\n\t\t\tclass=\"tabStripButton-${tabPosition}\"\n\t\t\tid=\"${id}_leftBtn\" iconClass=\"dijitTabStripSlideLeftIcon\"\n\t\t\tdojoAttachPoint=\"_leftBtn\" dojoAttachEvent=\"onClick: doSlideLeft\" showLabel=\"false\">◀</div>\n\t<div dojoType=\"dijit.layout._ScrollingTabControllerButton\"\n\t\t\tclass=\"tabStripButton-${tabPosition}\"\n\t\t\tid=\"${id}_rightBtn\" iconClass=\"dijitTabStripSlideRightIcon\"\n\t\t\tdojoAttachPoint=\"_rightBtn\" dojoAttachEvent=\"onClick: doSlideRight\" showLabel=\"false\">▶</div>\n\t<div class='dijitTabListWrapper' dojoAttachPoint='tablistWrapper'>\n\t\t<div role='tablist' dojoAttachEvent='onkeypress:onkeypress'\n\t\t\t\tdojoAttachPoint='containerNode' class='nowrapTabStrip'></div>\n\t</div>\n</div>\n"),
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// useMenu: [const] Boolean
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// True if a menu should be used to select tabs when they are too
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// wide to fit the TabContainer, false otherwise.
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useMenu: true,
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// useSlider: [const] Boolean
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// True if a slider should be used to select tabs when they are too
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// wide to fit the TabContainer, false otherwise.
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useSlider: true,
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// tabStripClass: [const] String
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// The css class to apply to the tab strip, if it is visible.
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tabStripClass: "",
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widgetsInTemplate: true,
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// _minScroll: Number
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// The distance in pixels from the edge of the tab strip which,
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// if a scroll animation is less than, forces the scroll to
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// go all the way to the left/right.
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_minScroll: 5,
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attributeMap: dojo.delegate(dijit._Widget.prototype.attributeMap, {
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"class": "containerNode"
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}),
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buildRendering: function(){
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this.inherited(arguments);
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var n = this.domNode;
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this.scrollNode = this.tablistWrapper;
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this._initButtons();
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if(!this.tabStripClass){
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this.tabStripClass = "dijitTabContainer" +
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this.tabPosition.charAt(0).toUpperCase() +
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this.tabPosition.substr(1).replace(/-.*/, "") +
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"None";
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dojo.addClass(n, "tabStrip-disabled")
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}
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dojo.addClass(this.tablistWrapper, this.tabStripClass);
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},
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onStartup: function(){
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this.inherited(arguments);
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// Do not show the TabController until the related
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// StackController has added it's children. This gives
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// a less visually jumpy instantiation.
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dojo.style(this.domNode, "visibility", "visible");
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this._postStartup = true;
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},
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onAddChild: function(page, insertIndex){
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this.inherited(arguments);
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// changes to the tab button label or iconClass will have changed the width of the
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// buttons, so do a resize
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dojo.forEach(["label", "iconClass"], function(attr){
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this.pane2watches[page.id].push(
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this.pane2button[page.id].watch(attr, dojo.hitch(this, function(name, oldValue, newValue){
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if(this._postStartup && this._dim){
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this.resize(this._dim);
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}
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}))
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);
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}, this);
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// Increment the width of the wrapper when a tab is added
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// This makes sure that the buttons never wrap.
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// The value 200 is chosen as it should be bigger than most
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// Tab button widths.
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dojo.style(this.containerNode, "width",
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(dojo.style(this.containerNode, "width") + 200) + "px");
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},
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onRemoveChild: function(page, insertIndex){
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// null out _selectedTab because we are about to delete that dom node
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var button = this.pane2button[page.id];
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if(this._selectedTab === button.domNode){
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this._selectedTab = null;
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}
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this.inherited(arguments);
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},
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_initButtons: function(){
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// summary:
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// Creates the buttons used to scroll to view tabs that
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// may not be visible if the TabContainer is too narrow.
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// Make a list of the buttons to display when the tab labels become
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// wider than the TabContainer, and hide the other buttons.
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// Also gets the total width of the displayed buttons.
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this._btnWidth = 0;
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this._buttons = dojo.query("> .tabStripButton", this.domNode).filter(function(btn){
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if((this.useMenu && btn == this._menuBtn.domNode) ||
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(this.useSlider && (btn == this._rightBtn.domNode || btn == this._leftBtn.domNode))){
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this._btnWidth += dojo._getMarginSize(btn).w;
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return true;
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}else{
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dojo.style(btn, "display", "none");
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return false;
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}
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}, this);
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},
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_getTabsWidth: function(){
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var children = this.getChildren();
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if(children.length){
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var leftTab = children[this.isLeftToRight() ? 0 : children.length - 1].domNode,
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rightTab = children[this.isLeftToRight() ? children.length - 1 : 0].domNode;
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return rightTab.offsetLeft + dojo.style(rightTab, "width") - leftTab.offsetLeft;
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}else{
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return 0;
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}
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},
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_enableBtn: function(width){
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// summary:
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// Determines if the tabs are wider than the width of the TabContainer, and
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// thus that we need to display left/right/menu navigation buttons.
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var tabsWidth = this._getTabsWidth();
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width = width || dojo.style(this.scrollNode, "width");
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return tabsWidth > 0 && width < tabsWidth;
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},
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resize: function(dim){
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// summary:
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// Hides or displays the buttons used to scroll the tab list and launch the menu
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// that selects tabs.
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if(this.domNode.offsetWidth == 0){
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return;
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}
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// Save the dimensions to be used when a child is renamed.
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this._dim = dim;
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// Set my height to be my natural height (tall enough for one row of tab labels),
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// and my content-box width based on margin-box width specified in dim parameter.
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// But first reset scrollNode.height in case it was set by layoutChildren() call
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// in a previous run of this method.
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this.scrollNode.style.height = "auto";
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this._contentBox = dijit.layout.marginBox2contentBox(this.domNode, {h: 0, w: dim.w});
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this._contentBox.h = this.scrollNode.offsetHeight;
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dojo.contentBox(this.domNode, this._contentBox);
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// Show/hide the left/right/menu navigation buttons depending on whether or not they
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// are needed.
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var enable = this._enableBtn(this._contentBox.w);
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this._buttons.style("display", enable ? "" : "none");
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// Position and size the navigation buttons and the tablist
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this._leftBtn.layoutAlign = "left";
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this._rightBtn.layoutAlign = "right";
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this._menuBtn.layoutAlign = this.isLeftToRight() ? "right" : "left";
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dijit.layout.layoutChildren(this.domNode, this._contentBox,
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[this._menuBtn, this._leftBtn, this._rightBtn, {domNode: this.scrollNode, layoutAlign: "client"}]);
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// set proper scroll so that selected tab is visible
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if(this._selectedTab){
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if(this._anim && this._anim.status() == "playing"){
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this._anim.stop();
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}
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var w = this.scrollNode,
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sl = this._convertToScrollLeft(this._getScrollForSelectedTab());
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w.scrollLeft = sl;
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}
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// Enable/disabled left right buttons depending on whether or not user can scroll to left or right
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this._setButtonClass(this._getScroll());
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this._postResize = true;
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// Return my size so layoutChildren() can use it.
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// Also avoids IE9 layout glitch on browser resize when scroll buttons present
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return {h: this._contentBox.h, w: dim.w};
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},
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_getScroll: function(){
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// summary:
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// Returns the current scroll of the tabs where 0 means
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// "scrolled all the way to the left" and some positive number, based on #
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// of pixels of possible scroll (ex: 1000) means "scrolled all the way to the right"
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var sl = (this.isLeftToRight() || dojo.isIE < 8 || (dojo.isIE && dojo.isQuirks) || dojo.isWebKit) ? this.scrollNode.scrollLeft :
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dojo.style(this.containerNode, "width") - dojo.style(this.scrollNode, "width")
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+ (dojo.isIE == 8 ? -1 : 1) * this.scrollNode.scrollLeft;
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return sl;
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},
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_convertToScrollLeft: function(val){
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// summary:
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// Given a scroll value where 0 means "scrolled all the way to the left"
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// and some positive number, based on # of pixels of possible scroll (ex: 1000)
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// means "scrolled all the way to the right", return value to set this.scrollNode.scrollLeft
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// to achieve that scroll.
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//
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// This method is to adjust for RTL funniness in various browsers and versions.
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if(this.isLeftToRight() || dojo.isIE < 8 || (dojo.isIE && dojo.isQuirks) || dojo.isWebKit){
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return val;
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}else{
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var maxScroll = dojo.style(this.containerNode, "width") - dojo.style(this.scrollNode, "width");
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return (dojo.isIE == 8 ? -1 : 1) * (val - maxScroll);
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}
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},
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onSelectChild: function(/*dijit._Widget*/ page){
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// summary:
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// Smoothly scrolls to a tab when it is selected.
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var tab = this.pane2button[page.id];
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if(!tab || !page){return;}
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// Scroll to the selected tab, except on startup, when scrolling is handled in resize()
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var node = tab.domNode;
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if(this._postResize && node != this._selectedTab){
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this._selectedTab = node;
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var sl = this._getScroll();
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if(sl > node.offsetLeft ||
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sl + dojo.style(this.scrollNode, "width") <
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node.offsetLeft + dojo.style(node, "width")){
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this.createSmoothScroll().play();
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}
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}
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this.inherited(arguments);
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},
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_getScrollBounds: function(){
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// summary:
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// Returns the minimum and maximum scroll setting to show the leftmost and rightmost
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// tabs (respectively)
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var children = this.getChildren(),
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scrollNodeWidth = dojo.style(this.scrollNode, "width"), // about 500px
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containerWidth = dojo.style(this.containerNode, "width"), // 50,000px
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maxPossibleScroll = containerWidth - scrollNodeWidth, // scrolling until right edge of containerNode visible
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tabsWidth = this._getTabsWidth();
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if(children.length && tabsWidth > scrollNodeWidth){
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// Scrolling should happen
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return {
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min: this.isLeftToRight() ? 0 : children[children.length-1].domNode.offsetLeft,
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max: this.isLeftToRight() ?
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(children[children.length-1].domNode.offsetLeft + dojo.style(children[children.length-1].domNode, "width")) - scrollNodeWidth :
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maxPossibleScroll
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};
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}else{
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// No scrolling needed, all tabs visible, we stay either scrolled to far left or far right (depending on dir)
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var onlyScrollPosition = this.isLeftToRight() ? 0 : maxPossibleScroll;
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return {
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min: onlyScrollPosition,
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max: onlyScrollPosition
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};
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}
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},
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_getScrollForSelectedTab: function(){
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// summary:
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// Returns the scroll value setting so that the selected tab
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// will appear in the center
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var w = this.scrollNode,
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n = this._selectedTab,
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scrollNodeWidth = dojo.style(this.scrollNode, "width"),
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scrollBounds = this._getScrollBounds();
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// TODO: scroll minimal amount (to either right or left) so that
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// selected tab is fully visible, and just return if it's already visible?
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var pos = (n.offsetLeft + dojo.style(n, "width")/2) - scrollNodeWidth/2;
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pos = Math.min(Math.max(pos, scrollBounds.min), scrollBounds.max);
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// TODO:
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// If scrolling close to the left side or right side, scroll
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// all the way to the left or right. See this._minScroll.
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// (But need to make sure that doesn't scroll the tab out of view...)
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return pos;
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},
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createSmoothScroll: function(x){
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// summary:
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// Creates a dojo._Animation object that smoothly scrolls the tab list
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// either to a fixed horizontal pixel value, or to the selected tab.
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// description:
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// If an number argument is passed to the function, that horizontal
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// pixel position is scrolled to. Otherwise the currently selected
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// tab is scrolled to.
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// x: Integer?
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// An optional pixel value to scroll to, indicating distance from left.
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// Calculate position to scroll to
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if(arguments.length > 0){
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// position specified by caller, just make sure it's within bounds
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var scrollBounds = this._getScrollBounds();
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x = Math.min(Math.max(x, scrollBounds.min), scrollBounds.max);
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}else{
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// scroll to center the current tab
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x = this._getScrollForSelectedTab();
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}
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if(this._anim && this._anim.status() == "playing"){
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this._anim.stop();
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}
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var self = this,
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w = this.scrollNode,
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anim = new dojo._Animation({
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beforeBegin: function(){
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if(this.curve){ delete this.curve; }
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var oldS = w.scrollLeft,
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newS = self._convertToScrollLeft(x);
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anim.curve = new dojo._Line(oldS, newS);
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},
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onAnimate: function(val){
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w.scrollLeft = val;
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}
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});
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this._anim = anim;
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// Disable/enable left/right buttons according to new scroll position
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this._setButtonClass(x);
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return anim; // dojo._Animation
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},
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_getBtnNode: function(/*Event*/ e){
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// summary:
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// Gets a button DOM node from a mouse click event.
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// e:
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// The mouse click event.
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var n = e.target;
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while(n && !dojo.hasClass(n, "tabStripButton")){
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n = n.parentNode;
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}
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return n;
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},
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doSlideRight: function(/*Event*/ e){
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// summary:
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// Scrolls the menu to the right.
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// e:
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// The mouse click event.
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this.doSlide(1, this._getBtnNode(e));
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},
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doSlideLeft: function(/*Event*/ e){
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// summary:
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// Scrolls the menu to the left.
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// e:
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// The mouse click event.
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this.doSlide(-1,this._getBtnNode(e));
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},
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doSlide: function(/*Number*/ direction, /*DomNode*/ node){
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// summary:
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// Scrolls the tab list to the left or right by 75% of the widget width.
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// direction:
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// If the direction is 1, the widget scrolls to the right, if it is
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// -1, it scrolls to the left.
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if(node && dojo.hasClass(node, "dijitTabDisabled")){return;}
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var sWidth = dojo.style(this.scrollNode, "width");
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var d = (sWidth * 0.75) * direction;
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var to = this._getScroll() + d;
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this._setButtonClass(to);
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this.createSmoothScroll(to).play();
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},
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_setButtonClass: function(/*Number*/ scroll){
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// summary:
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// Disables the left scroll button if the tabs are scrolled all the way to the left,
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// or the right scroll button in the opposite case.
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// scroll: Integer
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// amount of horizontal scroll
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var scrollBounds = this._getScrollBounds();
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this._leftBtn.set("disabled", scroll <= scrollBounds.min);
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this._rightBtn.set("disabled", scroll >= scrollBounds.max);
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}
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});
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dojo.declare("dijit.layout._ScrollingTabControllerButtonMixin", null, {
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baseClass: "dijitTab tabStripButton",
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templateString: dojo.cache("dijit.layout", "templates/_ScrollingTabControllerButton.html", "<div dojoAttachEvent=\"onclick:_onButtonClick\">\n\t<div role=\"presentation\" class=\"dijitTabInnerDiv\" dojoattachpoint=\"innerDiv,focusNode\">\n\t\t<div role=\"presentation\" class=\"dijitTabContent dijitButtonContents\" dojoattachpoint=\"tabContent\">\n\t\t\t<img role=\"presentation\" alt=\"\" src=\"${_blankGif}\" class=\"dijitTabStripIcon\" dojoAttachPoint=\"iconNode\"/>\n\t\t\t<span dojoAttachPoint=\"containerNode,titleNode\" class=\"dijitButtonText\"></span>\n\t\t</div>\n\t</div>\n</div>\n"),
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// Override inherited tabIndex: 0 from dijit.form.Button, because user shouldn't be
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// able to tab to the left/right/menu buttons
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tabIndex: "",
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// Similarly, override FormWidget.isFocusable() because clicking a button shouldn't focus it
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// either (this override avoids focus() call in FormWidget.js)
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isFocusable: function(){ return false; }
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});
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dojo.declare("dijit.layout._ScrollingTabControllerButton",
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[dijit.form.Button, dijit.layout._ScrollingTabControllerButtonMixin]);
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dojo.declare(
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"dijit.layout._ScrollingTabControllerMenuButton",
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[dijit.form.Button, dijit._HasDropDown, dijit.layout._ScrollingTabControllerButtonMixin],
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{
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// id of the TabContainer itself
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containerId: "",
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// -1 so user can't tab into the button, but so that button can still be focused programatically.
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// Because need to move focus to the button (or somewhere) before the menu is hidden or IE6 will crash.
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tabIndex: "-1",
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isLoaded: function(){
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// recreate menu every time, in case the TabContainer's list of children (or their icons/labels) have changed
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return false;
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},
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loadDropDown: function(callback){
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this.dropDown = new dijit.Menu({
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id: this.containerId + "_menu",
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dir: this.dir,
|
|
lang: this.lang
|
|
});
|
|
var container = dijit.byId(this.containerId);
|
|
dojo.forEach(container.getChildren(), function(page){
|
|
var menuItem = new dijit.MenuItem({
|
|
id: page.id + "_stcMi",
|
|
label: page.title,
|
|
iconClass: page.iconClass,
|
|
dir: page.dir,
|
|
lang: page.lang,
|
|
onClick: function(){
|
|
container.selectChild(page);
|
|
}
|
|
});
|
|
this.dropDown.addChild(menuItem);
|
|
}, this);
|
|
callback();
|
|
},
|
|
|
|
closeDropDown: function(/*Boolean*/ focus){
|
|
this.inherited(arguments);
|
|
if(this.dropDown){
|
|
this.dropDown.destroyRecursive();
|
|
delete this.dropDown;
|
|
}
|
|
}
|
|
});
|
|
|
|
}
|