1114 lines
35 KiB
JavaScript
1114 lines
35 KiB
JavaScript
/*
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Copyright (c) 2006, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 0.12.0
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*/
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/**
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* The Slider component is a UI control that enables the user to adjust
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* values in a finite range along one or two axes. Typically, the Slider
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* control is used in a web application as a rich, visual replacement
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* for an input box that takes a number as input. The Slider control can
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* also easily accommodate a second dimension, providing x,y output for
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* a selection point chosen from a rectangular region.
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*
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* @module slider
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* @title Slider Widget
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* @namespace YAHOO.widget
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* @requires yahoo,dom,dragdrop,event
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* @optional animation
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*/
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/**
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* A DragDrop implementation that can be used as a background for a
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* slider. It takes a reference to the thumb instance
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* so it can delegate some of the events to it. The goal is to make the
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* thumb jump to the location on the background when the background is
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* clicked.
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*
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* @class Slider
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* @extends YAHOO.util.DragDrop
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* @constructor
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* @param {String} id The id of the element linked to this instance
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* @param {String} sGroup The group of related DragDrop items
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* @param {String} sType The type of slider (horiz, vert, region)
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*/
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YAHOO.widget.Slider = function(sElementId, sGroup, oThumb, sType) {
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if (sElementId) {
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/**
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* The type of the slider (horiz, vert, region)
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* @property type
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* @type string
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*/
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this.type = sType;
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this.init(sElementId, sGroup, true);
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//this.removeInvalidHandleType("A");
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var self = this;
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/**
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* Event the fires when the value of the control changes. If
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* the control is animated the event will fire every point
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* along the way.
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* @event change
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* @param {int} new
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* @param {int} firstOffset the number of pixels the thumb has moved
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* from its start position. Normal horizontal and vertical sliders will only
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* have the firstOffset. Regions will have both, the first is the horizontal
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* offset, the second the vertical.
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* @param {int} secondOffset the y offset for region sliders
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*/
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this.createEvent("change", this);
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/**
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* Event that fires at the end of a slider thumb move.
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* @event slideStart
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*/
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this.createEvent("slideStart", this);
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/**
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* Event that fires at the end of a slider thumb move
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* @event slideEnd
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*/
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this.createEvent("slideEnd", this);
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/**
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* A YAHOO.widget.SliderThumb instance that we will use to
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* reposition the thumb when the background is clicked
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* @property thumb
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* @type YAHOO.widget.SliderThumb
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*/
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this.thumb = oThumb;
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// add handler for the handle onchange event
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oThumb.onChange = function() {
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self.handleThumbChange();
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};
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/**
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* Overrides the isTarget property in YAHOO.util.DragDrop
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* @property isTarget
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* @private
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*/
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this.isTarget = false;
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/**
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* Flag that determines if the thumb will animate when moved
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* @property animate
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* @type boolean
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*/
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this.animate = YAHOO.widget.Slider.ANIM_AVAIL;
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/**
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* Set to false to disable a background click thumb move
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* @property backgroundEnabled
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* @type boolean
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*/
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this.backgroundEnabled = true;
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/**
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* Adjustment factor for tick animation, the more ticks, the
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* faster the animation (by default)
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* @property tickPause
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* @type int
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*/
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this.tickPause = 40;
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/**
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* Enables the arrow, home and end keys, defaults to true.
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* @property enableKeys
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* @type boolean
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*/
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this.enableKeys = true;
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/**
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* Specifies the number of pixels the arrow keys will move the slider.
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* Default is 25.
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* @property keyIncrement
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* @type int
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*/
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this.keyIncrement = 20;
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/**
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* moveComplete is set to true when the slider has moved to its final
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* destination. For animated slider, this value can be checked in
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* the onChange handler to make it possible to execute logic only
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* when the move is complete rather than at all points along the way.
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*
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* @property moveComplete
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* @type Boolean
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*/
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this.moveComplete = true;
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/**
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* If animation is configured, specifies the length of the animation
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* in seconds.
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* @property animationDuration
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* @type int
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* @default 0.2
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*/
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this.animationDuration = 0.2;
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if (oThumb._isHoriz && oThumb.xTicks && oThumb.xTicks.length) {
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this.tickPause = Math.round(360 / oThumb.xTicks.length);
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} else if (oThumb.yTicks && oThumb.yTicks.length) {
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this.tickPause = Math.round(360 / oThumb.yTicks.length);
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}
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// delegate thumb methods
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oThumb.onMouseDown = function () { return self.focus(); };
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//oThumb.b4MouseDown = function () { return self.b4MouseDown(); };
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// oThumb.lock = function() { self.lock(); };
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// oThumb.unlock = function() { self.unlock(); };
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oThumb.onMouseUp = function() { self.thumbMouseUp(); };
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oThumb.onDrag = function() { self.fireEvents(); };
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oThumb.onAvailable = function() { return self.setStartSliderState(); };
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}
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};
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/**
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* Factory method for creating a horizontal slider
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* @method YAHOO.widget.Slider.getHorizSlider
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* @static
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* @param {String} sBGElId the id of the slider's background element
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* @param {String} sHandleElId the id of the thumb element
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* @param {int} iLeft the number of pixels the element can move left
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* @param {int} iRight the number of pixels the element can move right
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* @param {int} iTickSize optional parameter for specifying that the element
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* should move a certain number pixels at a time.
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* @return {Slider} a horizontal slider control
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*/
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YAHOO.widget.Slider.getHorizSlider =
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function (sBGElId, sHandleElId, iLeft, iRight, iTickSize) {
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return new YAHOO.widget.Slider(sBGElId, sBGElId,
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new YAHOO.widget.SliderThumb(sHandleElId, sBGElId,
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iLeft, iRight, 0, 0, iTickSize), "horiz");
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};
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/**
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* Factory method for creating a vertical slider
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* @method YAHOO.widget.Slider.getVertSlider
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* @static
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* @param {String} sBGElId the id of the slider's background element
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* @param {String} sHandleElId the id of the thumb element
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* @param {int} iUp the number of pixels the element can move up
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* @param {int} iDown the number of pixels the element can move down
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* @param {int} iTickSize optional parameter for specifying that the element
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* should move a certain number pixels at a time.
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* @return {Slider} a vertical slider control
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*/
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YAHOO.widget.Slider.getVertSlider =
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function (sBGElId, sHandleElId, iUp, iDown, iTickSize) {
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return new YAHOO.widget.Slider(sBGElId, sBGElId,
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new YAHOO.widget.SliderThumb(sHandleElId, sBGElId, 0, 0,
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iUp, iDown, iTickSize), "vert");
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};
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/**
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* Factory method for creating a slider region like the one in the color
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* picker example
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* @method YAHOO.widget.Slider.getSliderRegion
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* @static
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* @param {String} sBGElId the id of the slider's background element
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* @param {String} sHandleElId the id of the thumb element
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* @param {int} iLeft the number of pixels the element can move left
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* @param {int} iRight the number of pixels the element can move right
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* @param {int} iUp the number of pixels the element can move up
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* @param {int} iDown the number of pixels the element can move down
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* @param {int} iTickSize optional parameter for specifying that the element
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* should move a certain number pixels at a time.
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* @return {Slider} a slider region control
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*/
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YAHOO.widget.Slider.getSliderRegion =
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function (sBGElId, sHandleElId, iLeft, iRight, iUp, iDown, iTickSize) {
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return new YAHOO.widget.Slider(sBGElId, sBGElId,
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new YAHOO.widget.SliderThumb(sHandleElId, sBGElId, iLeft, iRight,
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iUp, iDown, iTickSize), "region");
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};
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/**
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* By default, animation is available if the animation library is detected.
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* @property YAHOO.widget.Slider.ANIM_AVAIL
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* @static
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* @type boolean
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*/
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YAHOO.widget.Slider.ANIM_AVAIL = true;
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YAHOO.extend(YAHOO.widget.Slider, YAHOO.util.DragDrop, {
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onAvailable: function() {
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var Event = YAHOO.util.Event;
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Event.on(this.id, "keydown", this.handleKeyDown, this, true);
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Event.on(this.id, "keypress", this.handleKeyPress, this, true);
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},
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handleKeyPress: function(e) {
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if (this.enableKeys) {
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var Event = YAHOO.util.Event;
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var kc = Event.getCharCode(e);
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switch (kc) {
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case 0x25: // left
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case 0x26: // up
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case 0x27: // right
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case 0x28: // down
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case 0x24: // home
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case 0x23: // end
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Event.preventDefault(e);
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break;
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default:
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}
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}
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},
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handleKeyDown: function(e) {
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if (this.enableKeys) {
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var Event = YAHOO.util.Event;
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var kc = Event.getCharCode(e), t=this.thumb;
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var h=this.getXValue(),v=this.getYValue();
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var horiz = false;
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var changeValue = true;
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switch (kc) {
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// left
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case 0x25: h -= this.keyIncrement; break;
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// up
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case 0x26: v -= this.keyIncrement; break;
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// right
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case 0x27: h += this.keyIncrement; break;
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// down
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case 0x28: v += this.keyIncrement; break;
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// home
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case 0x24: h = t.leftConstraint;
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v = t.topConstraint;
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break;
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// end
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case 0x23: h = t.rightConstraint;
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v = t.bottomConstraint;
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break;
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default: changeValue = false;
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}
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if (changeValue) {
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if (t._isRegion) {
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this.setRegionValue(h, v, true);
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} else {
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var newVal = (t._isHoriz) ? h : v;
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this.setValue(newVal, true);
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}
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Event.stopEvent(e);
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}
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}
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},
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/**
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* Initialization that sets up the value offsets once the elements are ready
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* @method setSliderStartState
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*/
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setStartSliderState: function() {
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this.setThumbCenterPoint();
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/**
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* The basline position of the background element, used
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* to determine if the background has moved since the last
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* operation.
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* @property baselinePos
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* @type [int, int]
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*/
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this.baselinePos = YAHOO.util.Dom.getXY(this.getEl());
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this.thumb.startOffset = this.thumb.getOffsetFromParent(this.baselinePos);
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if (this.thumb._isRegion) {
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if (this.deferredSetRegionValue) {
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this.setRegionValue.apply(this, this.deferredSetRegionValue, true);
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this.deferredSetRegionValue = null;
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} else {
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this.setRegionValue(0, 0, true);
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}
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} else {
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if (this.deferredSetValue) {
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this.setValue.apply(this, this.deferredSetValue, true);
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this.deferredSetValue = null;
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} else {
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this.setValue(0, true, true);
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}
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}
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},
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/**
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* When the thumb is available, we cache the centerpoint of the element so
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* we can position the element correctly when the background is clicked
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* @method setThumbCenterPoint
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*/
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setThumbCenterPoint: function() {
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var el = this.thumb.getEl();
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if (el) {
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/**
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* The center of the slider element is stored so we can position
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* place it in the correct position when the background is clicked
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* @property thumbCenterPoint
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* @type {"x": int, "y": int}
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*/
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this.thumbCenterPoint = {
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x: parseInt(el.offsetWidth/2, 10),
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y: parseInt(el.offsetHeight/2, 10)
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};
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}
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},
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/**
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* Locks the slider, overrides YAHOO.util.DragDrop
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* @method lock
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*/
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lock: function() {
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this.thumb.lock();
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this.locked = true;
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},
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/**
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* Unlocks the slider, overrides YAHOO.util.DragDrop
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* @method unlock
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*/
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unlock: function() {
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this.thumb.unlock();
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this.locked = false;
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},
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/**
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* Handles mouseup event on the slider background
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* @method thumbMouseUp
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* @private
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*/
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thumbMouseUp: function() {
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if (!this.isLocked() && !this.moveComplete) {
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this.endMove();
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}
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},
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/**
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* Returns a reference to this slider's thumb
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* @method getThumb
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* @return {SliderThumb} this slider's thumb
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*/
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getThumb: function() {
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return this.thumb;
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},
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/**
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* Try to focus the element when clicked so we can add
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* accessibility features
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* @method focus
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* @private
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*/
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focus: function() {
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// Focus the background element if possible
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var el = this.getEl();
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if (el.focus) {
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try {
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el.focus();
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} catch(e) {
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// Prevent permission denied unhandled exception in FF that can
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// happen when setting focus while another element is handling
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// the blur. @TODO this is still writing to the error log
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// (unhandled error) in FF1.5 with strict error checking on.
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}
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}
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this.verifyOffset();
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if (this.isLocked()) {
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return false;
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} else {
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this.onSlideStart();
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return true;
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}
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},
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/**
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* Event that fires when the value of the slider has changed
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* @method onChange
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* @param {int} firstOffset the number of pixels the thumb has moved
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* from its start position. Normal horizontal and vertical sliders will only
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* have the firstOffset. Regions will have both, the first is the horizontal
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* offset, the second the vertical.
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* @param {int} secondOffset the y offset for region sliders
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* @deprecated use instance.subscribe("change") instead
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*/
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onChange: function (firstOffset, secondOffset) {
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/* override me */
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},
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/**
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* Event that fires when the at the beginning of the slider thumb move
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* @method onSlideStart
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* @deprecated use instance.subscribe("slideStart") instead
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*/
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onSlideStart: function () {
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/* override me */
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},
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/**
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* Event that fires at the end of a slider thumb move
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* @method onSliderEnd
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* @deprecated use instance.subscribe("slideEnd") instead
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*/
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onSlideEnd: function () {
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/* override me */
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},
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/**
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* Returns the slider's thumb offset from the start position
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* @method getValue
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* @return {int} the current value
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*/
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getValue: function () {
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return this.thumb.getValue();
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},
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/**
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* Returns the slider's thumb X offset from the start position
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* @method getXValue
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* @return {int} the current horizontal offset
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*/
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getXValue: function () {
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return this.thumb.getXValue();
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},
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/**
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* Returns the slider's thumb Y offset from the start position
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* @method getYValue
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* @return {int} the current vertical offset
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*/
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getYValue: function () {
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return this.thumb.getYValue();
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},
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/**
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* Internal handler for the slider thumb's onChange event
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* @method handleThumbChange
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* @private
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*/
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handleThumbChange: function () {
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var t = this.thumb;
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if (t._isRegion) {
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t.onChange(t.getXValue(), t.getYValue());
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this.fireEvent("change", { x: t.getXValue(), y: t.getYValue() } );
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} else {
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t.onChange(t.getValue());
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this.fireEvent("change", t.getValue());
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}
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},
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/**
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* Provides a way to set the value of the slider in code.
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* @method setValue
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* @param {int} newOffset the number of pixels the thumb should be
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* positioned away from the initial start point
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* @param {boolean} skipAnim set to true to disable the animation
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* for this move action (but not others).
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* @param {boolean} force ignore the locked setting and set value anyway
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* @return {boolean} true if the move was performed, false if it failed
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*/
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setValue: function(newOffset, skipAnim, force) {
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if (!this.thumb.available) {
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this.deferredSetValue = arguments;
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return false;
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}
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if (this.isLocked() && !force) {
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return false;
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}
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if ( isNaN(newOffset) ) {
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return false;
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}
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var t = this.thumb;
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var newX, newY;
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this.verifyOffset();
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if (t._isRegion) {
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|
return false;
|
|
} else if (t._isHoriz) {
|
|
this.onSlideStart();
|
|
// this.fireEvent("slideStart");
|
|
newX = t.initPageX + newOffset + this.thumbCenterPoint.x;
|
|
this.moveThumb(newX, t.initPageY, skipAnim);
|
|
} else {
|
|
this.onSlideStart();
|
|
// this.fireEvent("slideStart");
|
|
newY = t.initPageY + newOffset + this.thumbCenterPoint.y;
|
|
this.moveThumb(t.initPageX, newY, skipAnim);
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Provides a way to set the value of the region slider in code.
|
|
* @method setRegionValue
|
|
* @param {int} newOffset the number of pixels the thumb should be
|
|
* positioned away from the initial start point (x axis for region)
|
|
* @param {int} newOffset2 the number of pixels the thumb should be
|
|
* positioned away from the initial start point (y axis for region)
|
|
* @param {boolean} skipAnim set to true to disable the animation
|
|
* for this move action (but not others).
|
|
* @param {boolean} force ignore the locked setting and set value anyway
|
|
* @return {boolean} true if the move was performed, false if it failed
|
|
*/
|
|
setRegionValue: function(newOffset, newOffset2, skipAnim) {
|
|
|
|
if (!this.thumb.available) {
|
|
this.deferredSetRegionValue = arguments;
|
|
return false;
|
|
}
|
|
|
|
if (this.isLocked() && !force) {
|
|
return false;
|
|
}
|
|
|
|
if ( isNaN(newOffset) ) {
|
|
return false;
|
|
}
|
|
|
|
var t = this.thumb;
|
|
if (t._isRegion) {
|
|
this.onSlideStart();
|
|
var newX = t.initPageX + newOffset + this.thumbCenterPoint.x;
|
|
var newY = t.initPageY + newOffset2 + this.thumbCenterPoint.y;
|
|
this.moveThumb(newX, newY, skipAnim);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
|
|
},
|
|
|
|
/**
|
|
* Checks the background position element position. If it has moved from the
|
|
* baseline position, the constraints for the thumb are reset
|
|
* @method verifyOffset
|
|
* @return {boolean} True if the offset is the same as the baseline.
|
|
*/
|
|
verifyOffset: function() {
|
|
|
|
var newPos = YAHOO.util.Dom.getXY(this.getEl());
|
|
|
|
if (newPos[0] != this.baselinePos[0] || newPos[1] != this.baselinePos[1]) {
|
|
this.thumb.resetConstraints();
|
|
this.baselinePos = newPos;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Move the associated slider moved to a timeout to try to get around the
|
|
* mousedown stealing moz does when I move the slider element between the
|
|
* cursor and the background during the mouseup event
|
|
* @method moveThumb
|
|
* @param {int} x the X coordinate of the click
|
|
* @param {int} y the Y coordinate of the click
|
|
* @param {boolean} skipAnim don't animate if the move happend onDrag
|
|
* @private
|
|
*/
|
|
moveThumb: function(x, y, skipAnim) {
|
|
|
|
|
|
var t = this.thumb;
|
|
var self = this;
|
|
|
|
if (!t.available) {
|
|
return;
|
|
}
|
|
|
|
|
|
// this.verifyOffset();
|
|
|
|
t.setDelta(this.thumbCenterPoint.x, this.thumbCenterPoint.y);
|
|
|
|
var _p = t.getTargetCoord(x, y);
|
|
var p = [_p.x, _p.y];
|
|
|
|
this.fireEvent("slideStart");
|
|
|
|
if (this.animate && YAHOO.widget.Slider.ANIM_AVAIL && t._graduated && !skipAnim) {
|
|
// this.thumb._animating = true;
|
|
this.lock();
|
|
|
|
setTimeout( function() { self.moveOneTick(p); }, this.tickPause );
|
|
|
|
} else if (this.animate && YAHOO.widget.Slider.ANIM_AVAIL && !skipAnim) {
|
|
|
|
// this.thumb._animating = true;
|
|
this.lock();
|
|
|
|
var oAnim = new YAHOO.util.Motion(
|
|
t.id, { points: { to: p } },
|
|
this.animationDuration,
|
|
YAHOO.util.Easing.easeOut );
|
|
|
|
oAnim.onComplete.subscribe( function() { self.endMove(); } );
|
|
oAnim.animate();
|
|
} else {
|
|
t.setDragElPos(x, y);
|
|
// this.fireEvents();
|
|
this.endMove();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Move the slider one tick mark towards its final coordinate. Used
|
|
* for the animation when tick marks are defined
|
|
* @method moveOneTick
|
|
* @param {int[]} the destination coordinate
|
|
* @private
|
|
*/
|
|
moveOneTick: function(finalCoord) {
|
|
|
|
var t = this.thumb;
|
|
var curCoord = YAHOO.util.Dom.getXY(t.getEl());
|
|
var tmp;
|
|
|
|
// var thresh = Math.min(t.tickSize + (Math.floor(t.tickSize/2)), 10);
|
|
// var thresh = 10;
|
|
// var thresh = t.tickSize + (Math.floor(t.tickSize/2));
|
|
|
|
var nextCoord = null;
|
|
|
|
if (t._isRegion) {
|
|
nextCoord = this._getNextX(curCoord, finalCoord);
|
|
var tmpX = (nextCoord) ? nextCoord[0] : curCoord[0];
|
|
nextCoord = this._getNextY([tmpX, curCoord[1]], finalCoord);
|
|
|
|
} else if (t._isHoriz) {
|
|
nextCoord = this._getNextX(curCoord, finalCoord);
|
|
} else {
|
|
nextCoord = this._getNextY(curCoord, finalCoord);
|
|
}
|
|
|
|
|
|
if (nextCoord) {
|
|
|
|
// move to the next coord
|
|
// YAHOO.util.Dom.setXY(t.getEl(), nextCoord);
|
|
|
|
// var el = t.getEl();
|
|
// YAHOO.util.Dom.setStyle(el, "left", (nextCoord[0] + this.thumb.deltaSetXY[0]) + "px");
|
|
// YAHOO.util.Dom.setStyle(el, "top", (nextCoord[1] + this.thumb.deltaSetXY[1]) + "px");
|
|
|
|
this.thumb.alignElWithMouse(t.getEl(), nextCoord[0], nextCoord[1]);
|
|
|
|
// check if we are in the final position, if not make a recursive call
|
|
if (!(nextCoord[0] == finalCoord[0] && nextCoord[1] == finalCoord[1])) {
|
|
var self = this;
|
|
setTimeout(function() { self.moveOneTick(finalCoord); },
|
|
this.tickPause);
|
|
} else {
|
|
this.endMove();
|
|
}
|
|
} else {
|
|
this.endMove();
|
|
}
|
|
|
|
//this.tickPause = Math.round(this.tickPause/2);
|
|
},
|
|
|
|
/**
|
|
* Returns the next X tick value based on the current coord and the target coord.
|
|
* @method _getNextX
|
|
* @private
|
|
*/
|
|
_getNextX: function(curCoord, finalCoord) {
|
|
var t = this.thumb;
|
|
var thresh;
|
|
var tmp = [];
|
|
var nextCoord = null;
|
|
if (curCoord[0] > finalCoord[0]) {
|
|
thresh = t.tickSize - this.thumbCenterPoint.x;
|
|
tmp = t.getTargetCoord( curCoord[0] - thresh, curCoord[1] );
|
|
nextCoord = [tmp.x, tmp.y];
|
|
} else if (curCoord[0] < finalCoord[0]) {
|
|
thresh = t.tickSize + this.thumbCenterPoint.x;
|
|
tmp = t.getTargetCoord( curCoord[0] + thresh, curCoord[1] );
|
|
nextCoord = [tmp.x, tmp.y];
|
|
} else {
|
|
// equal, do nothing
|
|
}
|
|
|
|
return nextCoord;
|
|
},
|
|
|
|
/**
|
|
* Returns the next Y tick value based on the current coord and the target coord.
|
|
* @method _getNextY
|
|
* @private
|
|
*/
|
|
_getNextY: function(curCoord, finalCoord) {
|
|
var t = this.thumb;
|
|
var thresh;
|
|
var tmp = [];
|
|
var nextCoord = null;
|
|
|
|
if (curCoord[1] > finalCoord[1]) {
|
|
thresh = t.tickSize - this.thumbCenterPoint.y;
|
|
tmp = t.getTargetCoord( curCoord[0], curCoord[1] - thresh );
|
|
nextCoord = [tmp.x, tmp.y];
|
|
} else if (curCoord[1] < finalCoord[1]) {
|
|
thresh = t.tickSize + this.thumbCenterPoint.y;
|
|
tmp = t.getTargetCoord( curCoord[0], curCoord[1] + thresh );
|
|
nextCoord = [tmp.x, tmp.y];
|
|
} else {
|
|
// equal, do nothing
|
|
}
|
|
|
|
return nextCoord;
|
|
},
|
|
|
|
/**
|
|
* Resets the constraints before moving the thumb.
|
|
* @method b4MouseDown
|
|
* @private
|
|
*/
|
|
b4MouseDown: function(e) {
|
|
this.thumb.autoOffset();
|
|
this.thumb.resetConstraints();
|
|
},
|
|
|
|
/**
|
|
* Handles the mousedown event for the slider background
|
|
* @method onMouseDown
|
|
* @private
|
|
*/
|
|
onMouseDown: function(e) {
|
|
// this.resetConstraints(true);
|
|
// this.thumb.resetConstraints(true);
|
|
|
|
if (! this.isLocked() && this.backgroundEnabled) {
|
|
var x = YAHOO.util.Event.getPageX(e);
|
|
var y = YAHOO.util.Event.getPageY(e);
|
|
|
|
this.focus();
|
|
this.moveThumb(x, y);
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* Handles the onDrag event for the slider background
|
|
* @method onDrag
|
|
* @private
|
|
*/
|
|
onDrag: function(e) {
|
|
if (! this.isLocked()) {
|
|
var x = YAHOO.util.Event.getPageX(e);
|
|
var y = YAHOO.util.Event.getPageY(e);
|
|
this.moveThumb(x, y, true);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Fired when the slider movement ends
|
|
* @method endMove
|
|
* @private
|
|
*/
|
|
endMove: function () {
|
|
// this._animating = false;
|
|
this.unlock();
|
|
this.moveComplete = true;
|
|
this.fireEvents();
|
|
},
|
|
|
|
/**
|
|
* Fires the change event if the value has been changed. Ignored if we are in
|
|
* the middle of an animation as the event will fire when the animation is
|
|
* complete
|
|
* @method fireEvents
|
|
* @private
|
|
*/
|
|
fireEvents: function () {
|
|
|
|
var t = this.thumb;
|
|
|
|
t.cachePosition();
|
|
|
|
if (! this.isLocked()) {
|
|
if (t._isRegion) {
|
|
var newX = t.getXValue();
|
|
var newY = t.getYValue();
|
|
|
|
if (newX != this.previousX || newY != this.previousY) {
|
|
this.onChange(newX, newY);
|
|
this.fireEvent("change", { x: newX, y: newY });
|
|
}
|
|
|
|
this.previousX = newX;
|
|
this.previousY = newY;
|
|
|
|
} else {
|
|
var newVal = t.getValue();
|
|
if (newVal != this.previousVal) {
|
|
this.onChange( newVal );
|
|
this.fireEvent("change", newVal);
|
|
}
|
|
this.previousVal = newVal;
|
|
}
|
|
|
|
if (this.moveComplete) {
|
|
this.onSlideEnd();
|
|
this.fireEvent("slideEnd");
|
|
this.moveComplete = false;
|
|
}
|
|
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Slider toString
|
|
* @method toString
|
|
* @return {string} string representation of the instance
|
|
*/
|
|
toString: function () {
|
|
return ("Slider (" + this.type +") " + this.id);
|
|
}
|
|
|
|
});
|
|
|
|
YAHOO.augment(YAHOO.widget.Slider, YAHOO.util.EventProvider);
|
|
|
|
/**
|
|
* A drag and drop implementation to be used as the thumb of a slider.
|
|
* @class SliderThumb
|
|
* @extends YAHOO.util.DD
|
|
* @constructor
|
|
* @param {String} id the id of the slider html element
|
|
* @param {String} sGroup the group of related DragDrop items
|
|
* @param {int} iLeft the number of pixels the element can move left
|
|
* @param {int} iRight the number of pixels the element can move right
|
|
* @param {int} iUp the number of pixels the element can move up
|
|
* @param {int} iDown the number of pixels the element can move down
|
|
* @param {int} iTickSize optional parameter for specifying that the element
|
|
* should move a certain number pixels at a time.
|
|
*/
|
|
YAHOO.widget.SliderThumb = function(id, sGroup, iLeft, iRight, iUp, iDown, iTickSize) {
|
|
|
|
if (id) {
|
|
this.init(id, sGroup);
|
|
|
|
/**
|
|
* The id of the thumbs parent HTML element (the slider background
|
|
* element).
|
|
* @property parentElId
|
|
* @type string
|
|
*/
|
|
this.parentElId = sGroup;
|
|
}
|
|
|
|
//this.removeInvalidHandleType("A");
|
|
|
|
|
|
/**
|
|
* Overrides the isTarget property in YAHOO.util.DragDrop
|
|
* @property isTarget
|
|
* @private
|
|
*/
|
|
this.isTarget = false;
|
|
|
|
/**
|
|
* The tick size for this slider
|
|
* @property tickSize
|
|
* @type int
|
|
* @private
|
|
*/
|
|
this.tickSize = iTickSize;
|
|
|
|
/**
|
|
* Informs the drag and drop util that the offsets should remain when
|
|
* resetting the constraints. This preserves the slider value when
|
|
* the constraints are reset
|
|
* @property maintainOffset
|
|
* @type boolean
|
|
* @private
|
|
*/
|
|
this.maintainOffset = true;
|
|
|
|
this.initSlider(iLeft, iRight, iUp, iDown, iTickSize);
|
|
|
|
/**
|
|
* Turns off the autoscroll feature in drag and drop
|
|
* @property scroll
|
|
* @private
|
|
*/
|
|
this.scroll = false;
|
|
|
|
};
|
|
|
|
YAHOO.extend(YAHOO.widget.SliderThumb, YAHOO.util.DD, {
|
|
|
|
/**
|
|
* The (X and Y) difference between the thumb location and its parent
|
|
* (the slider background) when the control is instantiated.
|
|
* @property startOffset
|
|
* @type [int, int]
|
|
*/
|
|
startOffset: null,
|
|
|
|
/**
|
|
* Flag used to figure out if this is a horizontal or vertical slider
|
|
* @property _isHoriz
|
|
* @type boolean
|
|
* @private
|
|
*/
|
|
_isHoriz: false,
|
|
|
|
/**
|
|
* Cache the last value so we can check for change
|
|
* @property _prevVal
|
|
* @type int
|
|
* @private
|
|
*/
|
|
_prevVal: 0,
|
|
|
|
/**
|
|
* The slider is _graduated if there is a tick interval defined
|
|
* @property _graduated
|
|
* @type boolean
|
|
* @private
|
|
*/
|
|
_graduated: false,
|
|
|
|
/**
|
|
* Returns the difference between the location of the thumb and its parent.
|
|
* @method getOffsetFromParent
|
|
* @param {[int, int]} parentPos Optionally accepts the position of the parent
|
|
* @type [int, int]
|
|
*/
|
|
getOffsetFromParent: function(parentPos) {
|
|
var myPos = YAHOO.util.Dom.getXY(this.getEl());
|
|
var ppos = parentPos || YAHOO.util.Dom.getXY(this.parentElId);
|
|
|
|
return [ (myPos[0] - ppos[0]), (myPos[1] - ppos[1]) ];
|
|
},
|
|
|
|
/**
|
|
* Set up the slider, must be called in the constructor of all subclasses
|
|
* @method initSlider
|
|
* @param {int} iLeft the number of pixels the element can move left
|
|
* @param {int} iRight the number of pixels the element can move right
|
|
* @param {int} iUp the number of pixels the element can move up
|
|
* @param {int} iDown the number of pixels the element can move down
|
|
* @param {int} iTickSize the width of the tick interval.
|
|
*/
|
|
initSlider: function (iLeft, iRight, iUp, iDown, iTickSize) {
|
|
|
|
this.setXConstraint(iLeft, iRight, iTickSize);
|
|
this.setYConstraint(iUp, iDown, iTickSize);
|
|
|
|
if (iTickSize && iTickSize > 1) {
|
|
this._graduated = true;
|
|
}
|
|
|
|
this._isHoriz = (iLeft || iRight);
|
|
this._isVert = (iUp || iDown);
|
|
this._isRegion = (this._isHoriz && this._isVert);
|
|
|
|
},
|
|
|
|
/**
|
|
* Clear's the slider's ticks
|
|
* @method clearTicks
|
|
*/
|
|
clearTicks: function () {
|
|
YAHOO.widget.SliderThumb.superclass.clearTicks.call(this);
|
|
this._graduated = false;
|
|
},
|
|
|
|
/**
|
|
* Gets the current offset from the element's start position in
|
|
* pixels.
|
|
* @method getValue
|
|
* @return {int} the number of pixels (positive or negative) the
|
|
* slider has moved from the start position.
|
|
*/
|
|
getValue: function () {
|
|
if (!this.available) { return 0; }
|
|
var val = (this._isHoriz) ? this.getXValue() : this.getYValue();
|
|
return val;
|
|
},
|
|
|
|
/**
|
|
* Gets the current X offset from the element's start position in
|
|
* pixels.
|
|
* @method getXValue
|
|
* @return {int} the number of pixels (positive or negative) the
|
|
* slider has moved horizontally from the start position.
|
|
*/
|
|
getXValue: function () {
|
|
if (!this.available) { return 0; }
|
|
var newOffset = this.getOffsetFromParent();
|
|
return (newOffset[0] - this.startOffset[0]);
|
|
},
|
|
|
|
/**
|
|
* Gets the current Y offset from the element's start position in
|
|
* pixels.
|
|
* @method getYValue
|
|
* @return {int} the number of pixels (positive or negative) the
|
|
* slider has moved vertically from the start position.
|
|
*/
|
|
getYValue: function () {
|
|
if (!this.available) { return 0; }
|
|
var newOffset = this.getOffsetFromParent();
|
|
return (newOffset[1] - this.startOffset[1]);
|
|
},
|
|
|
|
/**
|
|
* Thumb toString
|
|
* @method toString
|
|
* @return {string} string representation of the instance
|
|
*/
|
|
toString: function () {
|
|
return "SliderThumb " + this.id;
|
|
},
|
|
|
|
/**
|
|
* The onchange event for the handle/thumb is delegated to the YAHOO.widget.Slider
|
|
* instance it belongs to.
|
|
* @method onChange
|
|
* @private
|
|
*/
|
|
onChange: function (x, y) {
|
|
}
|
|
|
|
});
|
|
|
|
if ("undefined" == typeof YAHOO.util.Anim) {
|
|
YAHOO.widget.Slider.ANIM_AVAIL = false;
|
|
}
|
|
|