344 lines
15 KiB
JavaScript
344 lines
15 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.form.HorizontalSlider"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dijit.form.HorizontalSlider"] = true;
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dojo.provide("dijit.form.HorizontalSlider");
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dojo.require("dijit.form._FormWidget");
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dojo.require("dijit._Container");
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dojo.require("dojo.dnd.move");
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dojo.require("dijit.form.Button");
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dojo.require("dojo.number");
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dojo.declare(
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"dijit.form.HorizontalSlider",
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[dijit.form._FormValueWidget, dijit._Container],
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{
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// summary:
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// A form widget that allows one to select a value with a horizontally draggable handle
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templateString: dojo.cache("dijit.form", "templates/HorizontalSlider.html", "<table class=\"dijit dijitReset dijitSlider dijitSliderH\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\" rules=\"none\" dojoAttachEvent=\"onkeypress:_onKeyPress,onkeyup:_onKeyUp\"\n\t><tr class=\"dijitReset\"\n\t\t><td class=\"dijitReset\" colspan=\"2\"></td\n\t\t><td dojoAttachPoint=\"topDecoration\" class=\"dijitReset dijitSliderDecoration dijitSliderDecorationT dijitSliderDecorationH\"></td\n\t\t><td class=\"dijitReset\" colspan=\"2\"></td\n\t></tr\n\t><tr class=\"dijitReset\"\n\t\t><td class=\"dijitReset dijitSliderButtonContainer dijitSliderButtonContainerH\"\n\t\t\t><div class=\"dijitSliderDecrementIconH\" style=\"display:none\" dojoAttachPoint=\"decrementButton\"><span class=\"dijitSliderButtonInner\">-</span></div\n\t\t></td\n\t\t><td class=\"dijitReset\"\n\t\t\t><div class=\"dijitSliderBar dijitSliderBumper dijitSliderBumperH dijitSliderLeftBumper\" dojoAttachEvent=\"onmousedown:_onClkDecBumper\"></div\n\t\t></td\n\t\t><td class=\"dijitReset\"\n\t\t\t><input dojoAttachPoint=\"valueNode\" type=\"hidden\" ${!nameAttrSetting}\n\t\t\t/><div class=\"dijitReset dijitSliderBarContainerH\" role=\"presentation\" dojoAttachPoint=\"sliderBarContainer\"\n\t\t\t\t><div role=\"presentation\" dojoAttachPoint=\"progressBar\" class=\"dijitSliderBar dijitSliderBarH dijitSliderProgressBar dijitSliderProgressBarH\" dojoAttachEvent=\"onmousedown:_onBarClick\"\n\t\t\t\t\t><div class=\"dijitSliderMoveable dijitSliderMoveableH\"\n\t\t\t\t\t\t><div dojoAttachPoint=\"sliderHandle,focusNode\" class=\"dijitSliderImageHandle dijitSliderImageHandleH\" dojoAttachEvent=\"onmousedown:_onHandleClick\" role=\"slider\" valuemin=\"${minimum}\" valuemax=\"${maximum}\"></div\n\t\t\t\t\t></div\n\t\t\t\t></div\n\t\t\t\t><div role=\"presentation\" dojoAttachPoint=\"remainingBar\" class=\"dijitSliderBar dijitSliderBarH dijitSliderRemainingBar dijitSliderRemainingBarH\" dojoAttachEvent=\"onmousedown:_onBarClick\"></div\n\t\t\t></div\n\t\t></td\n\t\t><td class=\"dijitReset\"\n\t\t\t><div class=\"dijitSliderBar dijitSliderBumper dijitSliderBumperH dijitSliderRightBumper\" dojoAttachEvent=\"onmousedown:_onClkIncBumper\"></div\n\t\t></td\n\t\t><td class=\"dijitReset dijitSliderButtonContainer dijitSliderButtonContainerH\"\n\t\t\t><div class=\"dijitSliderIncrementIconH\" style=\"display:none\" dojoAttachPoint=\"incrementButton\"><span class=\"dijitSliderButtonInner\">+</span></div\n\t\t></td\n\t></tr\n\t><tr class=\"dijitReset\"\n\t\t><td class=\"dijitReset\" colspan=\"2\"></td\n\t\t><td dojoAttachPoint=\"containerNode,bottomDecoration\" class=\"dijitReset dijitSliderDecoration dijitSliderDecorationB dijitSliderDecorationH\"></td\n\t\t><td class=\"dijitReset\" colspan=\"2\"></td\n\t></tr\n></table>\n"),
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// Overrides FormValueWidget.value to indicate numeric value
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value: 0,
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// showButtons: [const] Boolean
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// Show increment/decrement buttons at the ends of the slider?
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showButtons: true,
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// minimum:: [const] Integer
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// The minimum value the slider can be set to.
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minimum: 0,
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// maximum: [const] Integer
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// The maximum value the slider can be set to.
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maximum: 100,
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// discreteValues: Integer
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// If specified, indicates that the slider handle has only 'discreteValues' possible positions,
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// and that after dragging the handle, it will snap to the nearest possible position.
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// Thus, the slider has only 'discreteValues' possible values.
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//
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// For example, if minimum=10, maxiumum=30, and discreteValues=3, then the slider handle has
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// three possible positions, representing values 10, 20, or 30.
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//
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// If discreteValues is not specified or if it's value is higher than the number of pixels
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// in the slider bar, then the slider handle can be moved freely, and the slider's value will be
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// computed/reported based on pixel position (in this case it will likely be fractional,
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// such as 123.456789).
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discreteValues: Infinity,
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// pageIncrement: Integer
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// If discreteValues is also specified, this indicates the amount of clicks (ie, snap positions)
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// that the slider handle is moved via pageup/pagedown keys.
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// If discreteValues is not specified, it indicates the number of pixels.
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pageIncrement: 2,
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// clickSelect: Boolean
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// If clicking the slider bar changes the value or not
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clickSelect: true,
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// slideDuration: Number
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// The time in ms to take to animate the slider handle from 0% to 100%,
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// when clicking the slider bar to make the handle move.
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slideDuration: dijit.defaultDuration,
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// Flag to _Templated (TODO: why is this here? I see no widgets in the template.)
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widgetsInTemplate: true,
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attributeMap: dojo.delegate(dijit.form._FormWidget.prototype.attributeMap, {
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id: ""
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}),
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baseClass: "dijitSlider",
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// Apply CSS classes to up/down arrows and handle per mouse state
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cssStateNodes: {
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incrementButton: "dijitSliderIncrementButton",
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decrementButton: "dijitSliderDecrementButton",
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focusNode: "dijitSliderThumb"
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},
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_mousePixelCoord: "pageX",
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_pixelCount: "w",
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_startingPixelCoord: "x",
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_startingPixelCount: "l",
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_handleOffsetCoord: "left",
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_progressPixelSize: "width",
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_onKeyUp: function(/*Event*/ e){
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if(this.disabled || this.readOnly || e.altKey || e.ctrlKey || e.metaKey){ return; }
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this._setValueAttr(this.value, true);
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},
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_onKeyPress: function(/*Event*/ e){
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if(this.disabled || this.readOnly || e.altKey || e.ctrlKey || e.metaKey){ return; }
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switch(e.charOrCode){
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case dojo.keys.HOME:
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this._setValueAttr(this.minimum, false);
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break;
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case dojo.keys.END:
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this._setValueAttr(this.maximum, false);
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break;
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// this._descending === false: if ascending vertical (min on top)
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// (this._descending || this.isLeftToRight()): if left-to-right horizontal or descending vertical
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case ((this._descending || this.isLeftToRight()) ? dojo.keys.RIGHT_ARROW : dojo.keys.LEFT_ARROW):
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case (this._descending === false ? dojo.keys.DOWN_ARROW : dojo.keys.UP_ARROW):
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case (this._descending === false ? dojo.keys.PAGE_DOWN : dojo.keys.PAGE_UP):
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this.increment(e);
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break;
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case ((this._descending || this.isLeftToRight()) ? dojo.keys.LEFT_ARROW : dojo.keys.RIGHT_ARROW):
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case (this._descending === false ? dojo.keys.UP_ARROW : dojo.keys.DOWN_ARROW):
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case (this._descending === false ? dojo.keys.PAGE_UP : dojo.keys.PAGE_DOWN):
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this.decrement(e);
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break;
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default:
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return;
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}
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dojo.stopEvent(e);
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},
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_onHandleClick: function(e){
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if(this.disabled || this.readOnly){ return; }
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if(!dojo.isIE){
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// make sure you get focus when dragging the handle
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// (but don't do on IE because it causes a flicker on mouse up (due to blur then focus)
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dijit.focus(this.sliderHandle);
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}
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dojo.stopEvent(e);
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},
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_isReversed: function(){
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// summary:
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// Returns true if direction is from right to left
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// tags:
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// protected extension
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return !this.isLeftToRight();
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},
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_onBarClick: function(e){
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if(this.disabled || this.readOnly || !this.clickSelect){ return; }
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dijit.focus(this.sliderHandle);
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dojo.stopEvent(e);
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var abspos = dojo.position(this.sliderBarContainer, true);
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var pixelValue = e[this._mousePixelCoord] - abspos[this._startingPixelCoord];
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this._setPixelValue(this._isReversed() ? (abspos[this._pixelCount] - pixelValue) : pixelValue, abspos[this._pixelCount], true);
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this._movable.onMouseDown(e);
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},
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_setPixelValue: function(/*Number*/ pixelValue, /*Number*/ maxPixels, /*Boolean?*/ priorityChange){
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if(this.disabled || this.readOnly){ return; }
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pixelValue = pixelValue < 0 ? 0 : maxPixels < pixelValue ? maxPixels : pixelValue;
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var count = this.discreteValues;
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if(count <= 1 || count == Infinity){ count = maxPixels; }
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count--;
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var pixelsPerValue = maxPixels / count;
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var wholeIncrements = Math.round(pixelValue / pixelsPerValue);
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this._setValueAttr((this.maximum-this.minimum)*wholeIncrements/count + this.minimum, priorityChange);
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},
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_setValueAttr: function(/*Number*/ value, /*Boolean?*/ priorityChange){
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// summary:
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// Hook so set('value', value) works.
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this._set("value", value);
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this.valueNode.value = value;
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dijit.setWaiState(this.focusNode, "valuenow", value);
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this.inherited(arguments);
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var percent = (value - this.minimum) / (this.maximum - this.minimum);
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var progressBar = (this._descending === false) ? this.remainingBar : this.progressBar;
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var remainingBar = (this._descending === false) ? this.progressBar : this.remainingBar;
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if(this._inProgressAnim && this._inProgressAnim.status != "stopped"){
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this._inProgressAnim.stop(true);
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}
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if(priorityChange && this.slideDuration > 0 && progressBar.style[this._progressPixelSize]){
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// animate the slider
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var _this = this;
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var props = {};
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var start = parseFloat(progressBar.style[this._progressPixelSize]);
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var duration = this.slideDuration * (percent-start/100);
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if(duration == 0){ return; }
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if(duration < 0){ duration = 0 - duration; }
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props[this._progressPixelSize] = { start: start, end: percent*100, units:"%" };
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this._inProgressAnim = dojo.animateProperty({ node: progressBar, duration: duration,
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onAnimate: function(v){ remainingBar.style[_this._progressPixelSize] = (100-parseFloat(v[_this._progressPixelSize])) + "%"; },
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onEnd: function(){ delete _this._inProgressAnim; },
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properties: props
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})
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this._inProgressAnim.play();
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}else{
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progressBar.style[this._progressPixelSize] = (percent*100) + "%";
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remainingBar.style[this._progressPixelSize] = ((1-percent)*100) + "%";
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}
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},
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_bumpValue: function(signedChange, /*Boolean?*/ priorityChange){
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if(this.disabled || this.readOnly){ return; }
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var s = dojo.getComputedStyle(this.sliderBarContainer);
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var c = dojo._getContentBox(this.sliderBarContainer, s);
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var count = this.discreteValues;
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if(count <= 1 || count == Infinity){ count = c[this._pixelCount]; }
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count--;
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var value = (this.value - this.minimum) * count / (this.maximum - this.minimum) + signedChange;
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if(value < 0){ value = 0; }
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if(value > count){ value = count; }
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value = value * (this.maximum - this.minimum) / count + this.minimum;
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this._setValueAttr(value, priorityChange);
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},
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_onClkBumper: function(val){
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if(this.disabled || this.readOnly || !this.clickSelect){ return; }
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this._setValueAttr(val, true);
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},
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_onClkIncBumper: function(){
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this._onClkBumper(this._descending === false ? this.minimum : this.maximum);
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},
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_onClkDecBumper: function(){
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this._onClkBumper(this._descending === false ? this.maximum : this.minimum);
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},
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decrement: function(/*Event*/ e){
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// summary:
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// Decrement slider
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// tags:
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// private
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this._bumpValue(e.charOrCode == dojo.keys.PAGE_DOWN ? -this.pageIncrement : -1);
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},
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increment: function(/*Event*/ e){
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// summary:
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// Increment slider
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// tags:
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// private
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this._bumpValue(e.charOrCode == dojo.keys.PAGE_UP ? this.pageIncrement : 1);
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},
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_mouseWheeled: function(/*Event*/ evt){
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// summary:
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// Event handler for mousewheel where supported
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dojo.stopEvent(evt);
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var janky = !dojo.isMozilla;
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var scroll = evt[(janky ? "wheelDelta" : "detail")] * (janky ? 1 : -1);
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this._bumpValue(scroll < 0 ? -1 : 1, true); // negative scroll acts like a decrement
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},
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startup: function(){
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if(this._started){ return; }
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dojo.forEach(this.getChildren(), function(child){
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if(this[child.container] != this.containerNode){
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this[child.container].appendChild(child.domNode);
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}
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}, this);
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this.inherited(arguments);
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},
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_typematicCallback: function(/*Number*/ count, /*Object*/ button, /*Event*/ e){
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if(count == -1){
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this._setValueAttr(this.value, true);
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}else{
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this[(button == (this._descending? this.incrementButton : this.decrementButton)) ? "decrement" : "increment"](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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if(this.showButtons){
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this.incrementButton.style.display="";
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this.decrementButton.style.display="";
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}
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// find any associated label element and add to slider focusnode.
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var label = dojo.query('label[for="'+this.id+'"]');
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if(label.length){
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label[0].id = (this.id+"_label");
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dijit.setWaiState(this.focusNode, "labelledby", label[0].id);
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}
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dijit.setWaiState(this.focusNode, "valuemin", this.minimum);
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dijit.setWaiState(this.focusNode, "valuemax", this.maximum);
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},
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postCreate: function(){
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this.inherited(arguments);
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if(this.showButtons){
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this._connects.push(dijit.typematic.addMouseListener(
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this.decrementButton, this, "_typematicCallback", 25, 500));
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this._connects.push(dijit.typematic.addMouseListener(
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this.incrementButton, this, "_typematicCallback", 25, 500));
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}
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this.connect(this.domNode, !dojo.isMozilla ? "onmousewheel" : "DOMMouseScroll", "_mouseWheeled");
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// define a custom constructor for a SliderMover that points back to me
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var mover = dojo.declare(dijit.form._SliderMover, {
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widget: this
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});
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this._movable = new dojo.dnd.Moveable(this.sliderHandle, {mover: mover});
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this._layoutHackIE7();
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},
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destroy: function(){
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this._movable.destroy();
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if(this._inProgressAnim && this._inProgressAnim.status != "stopped"){
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this._inProgressAnim.stop(true);
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}
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this._supportingWidgets = dijit.findWidgets(this.domNode); // tells destroy about pseudo-child widgets (ruler/labels)
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this.inherited(arguments);
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}
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});
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dojo.declare("dijit.form._SliderMover",
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dojo.dnd.Mover,
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{
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onMouseMove: function(e){
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var widget = this.widget;
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var abspos = widget._abspos;
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if(!abspos){
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abspos = widget._abspos = dojo.position(widget.sliderBarContainer, true);
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widget._setPixelValue_ = dojo.hitch(widget, "_setPixelValue");
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widget._isReversed_ = widget._isReversed();
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}
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var coordEvent = e.touches ? e.touches[0] : e, // if multitouch take first touch for coords
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pixelValue = coordEvent[widget._mousePixelCoord] - abspos[widget._startingPixelCoord];
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widget._setPixelValue_(widget._isReversed_ ? (abspos[widget._pixelCount]-pixelValue) : pixelValue, abspos[widget._pixelCount], false);
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},
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destroy: function(e){
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dojo.dnd.Mover.prototype.destroy.apply(this, arguments);
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var widget = this.widget;
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widget._abspos = null;
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widget._setValueAttr(widget.value, true);
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}
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});
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}
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