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503 lines
16 KiB
JavaScript
503 lines
16 KiB
JavaScript
define("dijit/_HasDropDown", [
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"dojo/_base/declare", // declare
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"dojo/_base/Deferred",
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"dojo/_base/event", // event.stop
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"dojo/dom", // dom.isDescendant
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"dojo/dom-attr", // domAttr.set
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"dojo/dom-class", // domClass.add domClass.contains domClass.remove
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"dojo/dom-geometry", // domGeometry.marginBox domGeometry.position
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"dojo/dom-style", // domStyle.set
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"dojo/has",
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"dojo/keys", // keys.DOWN_ARROW keys.ENTER keys.ESCAPE
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"dojo/_base/lang", // lang.hitch lang.isFunction
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"dojo/touch",
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"dojo/_base/window", // win.doc
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"dojo/window", // winUtils.getBox
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"./registry", // registry.byNode()
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"./focus",
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"./popup",
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"./_FocusMixin"
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], function(declare, Deferred, event,dom, domAttr, domClass, domGeometry, domStyle, has, keys, lang, touch,
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win, winUtils, registry, focus, popup, _FocusMixin){
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/*=====
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var _FocusMixin = dijit._FocusMixin;
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=====*/
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// module:
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// dijit/_HasDropDown
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// summary:
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// Mixin for widgets that need drop down ability.
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return declare("dijit._HasDropDown", _FocusMixin, {
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// summary:
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// Mixin for widgets that need drop down ability.
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// _buttonNode: [protected] DomNode
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// The button/icon/node to click to display the drop down.
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// Can be set via a data-dojo-attach-point assignment.
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// If missing, then either focusNode or domNode (if focusNode is also missing) will be used.
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_buttonNode: null,
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// _arrowWrapperNode: [protected] DomNode
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// Will set CSS class dijitUpArrow, dijitDownArrow, dijitRightArrow etc. on this node depending
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// on where the drop down is set to be positioned.
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// Can be set via a data-dojo-attach-point assignment.
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// If missing, then _buttonNode will be used.
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_arrowWrapperNode: null,
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// _popupStateNode: [protected] DomNode
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// The node to set the popupActive class on.
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// Can be set via a data-dojo-attach-point assignment.
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// If missing, then focusNode or _buttonNode (if focusNode is missing) will be used.
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_popupStateNode: null,
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// _aroundNode: [protected] DomNode
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// The node to display the popup around.
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// Can be set via a data-dojo-attach-point assignment.
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// If missing, then domNode will be used.
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_aroundNode: null,
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// dropDown: [protected] Widget
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// The widget to display as a popup. This widget *must* be
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// defined before the startup function is called.
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dropDown: null,
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// autoWidth: [protected] Boolean
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// Set to true to make the drop down at least as wide as this
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// widget. Set to false if the drop down should just be its
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// default width
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autoWidth: true,
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// forceWidth: [protected] Boolean
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// Set to true to make the drop down exactly as wide as this
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// widget. Overrides autoWidth.
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forceWidth: false,
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// maxHeight: [protected] Integer
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// The max height for our dropdown.
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// Any dropdown taller than this will have scrollbars.
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// Set to 0 for no max height, or -1 to limit height to available space in viewport
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maxHeight: 0,
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// dropDownPosition: [const] String[]
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// This variable controls the position of the drop down.
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// It's an array of strings with the following values:
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//
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// * before: places drop down 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 drop down 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: drop down goes above target node
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// * below: drop down 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 drop down fits
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// within the viewport.
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//
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dropDownPosition: ["below","above"],
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// _stopClickEvents: Boolean
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// When set to false, the click events will not be stopped, in
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// case you want to use them in your subwidget
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_stopClickEvents: true,
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_onDropDownMouseDown: function(/*Event*/ e){
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// summary:
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// Callback when the user mousedown's on the arrow icon
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if(this.disabled || this.readOnly){ return; }
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// Prevent default to stop things like text selection, but don't stop propogation, so that:
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// 1. TimeTextBox etc. can focusthe <input> on mousedown
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// 2. dropDownButtonActive class applied by _CssStateMixin (on button depress)
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// 3. user defined onMouseDown handler fires
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e.preventDefault();
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this._docHandler = this.connect(win.doc, touch.release, "_onDropDownMouseUp");
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this.toggleDropDown();
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},
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_onDropDownMouseUp: function(/*Event?*/ e){
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// summary:
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// Callback when the user lifts their mouse after mouse down on the arrow icon.
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// If the drop down is a simple menu and the mouse is over the menu, we execute it, otherwise, we focus our
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// drop down widget. If the event is missing, then we are not
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// a mouseup event.
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//
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// This is useful for the common mouse movement pattern
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// with native browser <select> nodes:
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// 1. mouse down on the select node (probably on the arrow)
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// 2. move mouse to a menu item while holding down the mouse button
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// 3. mouse up. this selects the menu item as though the user had clicked it.
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if(e && this._docHandler){
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this.disconnect(this._docHandler);
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}
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var dropDown = this.dropDown, overMenu = false;
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if(e && this._opened){
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// This code deals with the corner-case when the drop down covers the original widget,
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// because it's so large. In that case mouse-up shouldn't select a value from the menu.
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// Find out if our target is somewhere in our dropdown widget,
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// but not over our _buttonNode (the clickable node)
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var c = domGeometry.position(this._buttonNode, true);
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if(!(e.pageX >= c.x && e.pageX <= c.x + c.w) ||
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!(e.pageY >= c.y && e.pageY <= c.y + c.h)){
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var t = e.target;
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while(t && !overMenu){
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if(domClass.contains(t, "dijitPopup")){
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overMenu = true;
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}else{
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t = t.parentNode;
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}
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}
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if(overMenu){
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t = e.target;
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if(dropDown.onItemClick){
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var menuItem;
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while(t && !(menuItem = registry.byNode(t))){
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t = t.parentNode;
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}
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if(menuItem && menuItem.onClick && menuItem.getParent){
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menuItem.getParent().onItemClick(menuItem, e);
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}
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}
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return;
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}
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}
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}
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if(this._opened){
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if(dropDown.focus && dropDown.autoFocus !== false){
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// Focus the dropdown widget - do it on a delay so that we
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// don't steal our own focus.
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window.setTimeout(lang.hitch(dropDown, "focus"), 1);
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}
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}else{
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// The drop down arrow icon probably can't receive focus, but widget itself should get focus.
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// setTimeout() needed to make it work on IE (test DateTextBox)
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setTimeout(lang.hitch(this, "focus"), 0);
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}
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if(has("ios")){
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this._justGotMouseUp = true;
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setTimeout(lang.hitch(this, function(){
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this._justGotMouseUp = false;
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}), 0);
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}
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},
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_onDropDownClick: function(/*Event*/ e){
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if(has("ios") && !this._justGotMouseUp){
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// This branch fires on iPhone for ComboBox, because the button node is an <input> and doesn't
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// generate touchstart/touchend events. Pretend we just got a mouse down / mouse up.
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// The if(has("ios") is necessary since IE and desktop safari get spurious onclick events
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// when there are nested tables (specifically, clicking on a table that holds a dijit.form.Select,
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// but not on the Select itself, causes an onclick event on the Select)
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this._onDropDownMouseDown(e);
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this._onDropDownMouseUp(e);
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}
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// The drop down was already opened on mousedown/keydown; just need to call stopEvent().
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if(this._stopClickEvents){
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event.stop(e);
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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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this._buttonNode = this._buttonNode || this.focusNode || this.domNode;
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this._popupStateNode = this._popupStateNode || this.focusNode || this._buttonNode;
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// Add a class to the "dijitDownArrowButton" type class to _buttonNode so theme can set direction of arrow
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// based on where drop down will normally appear
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var defaultPos = {
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"after" : this.isLeftToRight() ? "Right" : "Left",
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"before" : this.isLeftToRight() ? "Left" : "Right",
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"above" : "Up",
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"below" : "Down",
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"left" : "Left",
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"right" : "Right"
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}[this.dropDownPosition[0]] || this.dropDownPosition[0] || "Down";
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domClass.add(this._arrowWrapperNode || this._buttonNode, "dijit" + defaultPos + "ArrowButton");
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},
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postCreate: function(){
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// summary:
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// set up nodes and connect our mouse and keypress events
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this.inherited(arguments);
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this.connect(this._buttonNode, touch.press, "_onDropDownMouseDown");
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this.connect(this._buttonNode, "onclick", "_onDropDownClick");
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this.connect(this.focusNode, "onkeypress", "_onKey");
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this.connect(this.focusNode, "onkeyup", "_onKeyUp");
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},
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destroy: function(){
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if(this.dropDown){
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// Destroy the drop down, unless it's already been destroyed. This can happen because
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// the drop down is a direct child of <body> even though it's logically my child.
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if(!this.dropDown._destroyed){
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this.dropDown.destroyRecursive();
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}
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delete this.dropDown;
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}
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this.inherited(arguments);
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},
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_onKey: function(/*Event*/ e){
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// summary:
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// Callback when the user presses a key while focused on the button node
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if(this.disabled || this.readOnly){ return; }
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var d = this.dropDown, target = e.target;
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if(d && this._opened && d.handleKey){
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if(d.handleKey(e) === false){
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/* false return code means that the drop down handled the key */
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event.stop(e);
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return;
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}
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}
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if(d && this._opened && e.charOrCode == keys.ESCAPE){
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this.closeDropDown();
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event.stop(e);
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}else if(!this._opened &&
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(e.charOrCode == keys.DOWN_ARROW ||
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( (e.charOrCode == keys.ENTER || e.charOrCode == " ") &&
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//ignore enter and space if the event is for a text input
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((target.tagName || "").toLowerCase() !== 'input' ||
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(target.type && target.type.toLowerCase() !== 'text'))))){
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// Toggle the drop down, but wait until keyup so that the drop down doesn't
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// get a stray keyup event, or in the case of key-repeat (because user held
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// down key for too long), stray keydown events
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this._toggleOnKeyUp = true;
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event.stop(e);
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}
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},
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_onKeyUp: function(){
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if(this._toggleOnKeyUp){
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delete this._toggleOnKeyUp;
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this.toggleDropDown();
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var d = this.dropDown; // drop down may not exist until toggleDropDown() call
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if(d && d.focus){
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setTimeout(lang.hitch(d, "focus"), 1);
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}
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}
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},
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_onBlur: function(){
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// summary:
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// Called magically when focus has shifted away from this widget and it's dropdown
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// Don't focus on button if the user has explicitly focused on something else (happens
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// when user clicks another control causing the current popup to close)..
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// But if focus is inside of the drop down then reset focus to me, because IE doesn't like
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// it when you display:none a node with focus.
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var focusMe = focus.curNode && this.dropDown && dom.isDescendant(focus.curNode, this.dropDown.domNode);
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this.closeDropDown(focusMe);
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this.inherited(arguments);
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},
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isLoaded: function(){
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// summary:
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// Returns true if the dropdown exists and it's data is loaded. This can
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// be overridden in order to force a call to loadDropDown().
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// tags:
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// protected
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return true;
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},
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loadDropDown: function(/*Function*/ loadCallback){
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// summary:
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// Creates the drop down if it doesn't exist, loads the data
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// if there's an href and it hasn't been loaded yet, and then calls
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// the given callback.
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// tags:
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// protected
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// TODO: for 2.0, change API to return a Deferred, instead of calling loadCallback?
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loadCallback();
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},
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loadAndOpenDropDown: function(){
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// summary:
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// Creates the drop down if it doesn't exist, loads the data
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// if there's an href and it hasn't been loaded yet, and
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// then opens the drop down. This is basically a callback when the
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// user presses the down arrow button to open the drop down.
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// returns: Deferred
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// Deferred for the drop down widget that
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// fires when drop down is created and loaded
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// tags:
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// protected
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var d = new Deferred(),
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afterLoad = lang.hitch(this, function(){
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this.openDropDown();
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d.resolve(this.dropDown);
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});
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if(!this.isLoaded()){
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this.loadDropDown(afterLoad);
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}else{
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afterLoad();
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}
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return d;
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},
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toggleDropDown: function(){
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// summary:
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// Callback when the user presses the down arrow button or presses
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// the down arrow key to open/close the drop down.
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// Toggle the drop-down widget; if it is up, close it, if not, open it
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// tags:
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// protected
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if(this.disabled || this.readOnly){ return; }
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if(!this._opened){
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this.loadAndOpenDropDown();
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}else{
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this.closeDropDown();
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}
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},
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openDropDown: function(){
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// summary:
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// Opens the dropdown for this widget. To be called only when this.dropDown
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// has been created and is ready to display (ie, it's data is loaded).
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// returns:
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// return value of dijit.popup.open()
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// tags:
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// protected
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var dropDown = this.dropDown,
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ddNode = dropDown.domNode,
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aroundNode = this._aroundNode || this.domNode,
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self = this;
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// Prepare our popup's height and honor maxHeight if it exists.
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// TODO: isn't maxHeight dependent on the return value from dijit.popup.open(),
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// ie, dependent on how much space is available (BK)
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if(!this._preparedNode){
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this._preparedNode = true;
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// Check if we have explicitly set width and height on the dropdown widget dom node
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if(ddNode.style.width){
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this._explicitDDWidth = true;
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}
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if(ddNode.style.height){
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this._explicitDDHeight = true;
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}
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}
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// Code for resizing dropdown (height limitation, or increasing width to match my width)
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if(this.maxHeight || this.forceWidth || this.autoWidth){
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var myStyle = {
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display: "",
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visibility: "hidden"
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};
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if(!this._explicitDDWidth){
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myStyle.width = "";
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}
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if(!this._explicitDDHeight){
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myStyle.height = "";
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}
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domStyle.set(ddNode, myStyle);
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// Figure out maximum height allowed (if there is a height restriction)
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var maxHeight = this.maxHeight;
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if(maxHeight == -1){
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// limit height to space available in viewport either above or below my domNode
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// (whichever side has more room)
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var viewport = winUtils.getBox(),
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position = domGeometry.position(aroundNode, false);
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maxHeight = Math.floor(Math.max(position.y, viewport.h - (position.y + position.h)));
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}
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// Attach dropDown to DOM and make make visibility:hidden rather than display:none
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// so we call startup() and also get the size
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popup.moveOffScreen(dropDown);
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if(dropDown.startup && !dropDown._started){
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dropDown.startup(); // this has to be done after being added to the DOM
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}
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// Get size of drop down, and determine if vertical scroll bar needed
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var mb = domGeometry.getMarginSize(ddNode);
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var overHeight = (maxHeight && mb.h > maxHeight);
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domStyle.set(ddNode, {
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overflowX: "hidden",
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overflowY: overHeight ? "auto" : "hidden"
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});
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if(overHeight){
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mb.h = maxHeight;
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if("w" in mb){
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mb.w += 16; // room for vertical scrollbar
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}
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}else{
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delete mb.h;
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}
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// Adjust dropdown width to match or be larger than my width
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if(this.forceWidth){
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mb.w = aroundNode.offsetWidth;
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}else if(this.autoWidth){
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mb.w = Math.max(mb.w, aroundNode.offsetWidth);
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}else{
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delete mb.w;
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}
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// And finally, resize the dropdown to calculated height and width
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if(lang.isFunction(dropDown.resize)){
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dropDown.resize(mb);
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}else{
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domGeometry.setMarginBox(ddNode, mb);
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}
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}
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var retVal = popup.open({
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parent: this,
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popup: dropDown,
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around: aroundNode,
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orient: this.dropDownPosition,
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onExecute: function(){
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self.closeDropDown(true);
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},
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onCancel: function(){
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self.closeDropDown(true);
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},
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onClose: function(){
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domAttr.set(self._popupStateNode, "popupActive", false);
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domClass.remove(self._popupStateNode, "dijitHasDropDownOpen");
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self._opened = false;
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}
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});
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domAttr.set(this._popupStateNode, "popupActive", "true");
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domClass.add(self._popupStateNode, "dijitHasDropDownOpen");
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this._opened=true;
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// TODO: set this.checked and call setStateClass(), to affect button look while drop down is shown
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return retVal;
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},
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closeDropDown: function(/*Boolean*/ focus){
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// summary:
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// Closes the drop down on this widget
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// focus:
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// If true, refocuses the button widget
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// tags:
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// protected
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if(this._opened){
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if(focus){ this.focus(); }
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popup.close(this.dropDown);
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this._opened = false;
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}
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}
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});
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});
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