bzr branch
http://darksoft.org/webbzr/adei/trunk
210.1.1
by Suren A. Chilingaryan
Support of Appled devices by Toni Pirhonen |
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/**
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*
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* Find more about the Spinning Wheel function at
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* http://cubiq.org/spinning-wheel-on-webkit-for-iphone-ipod-touch/11
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*
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* Copyright (c) 2009 Matteo Spinelli, http://cubiq.org/
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* Released under MIT license
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* http://cubiq.org/dropbox/mit-license.txt
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*
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* Version 1.4 - Last updated: 2009.07.09
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*
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*/
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var SpinningWheel = { |
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cellHeight: 44, |
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friction: 0.003, |
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slotData: [], |
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/**
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*
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* Event handler
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*
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*/
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handleEvent: function (e) { |
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if (e.type == 'touchstart') { |
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this.lockScreen(e); |
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if (e.currentTarget.id == 'sw-cancel' || e.currentTarget.id == 'sw-done') { |
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this.tapDown(e); |
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} else if (e.currentTarget.id == 'sw-frame') { |
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this.scrollStart(e); |
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}
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} else if (e.type == 'touchmove') { |
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this.lockScreen(e); |
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if (e.currentTarget.id == 'sw-cancel' || e.currentTarget.id == 'sw-done') { |
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this.tapCancel(e); |
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} else if (e.currentTarget.id == 'sw-frame') { |
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this.scrollMove(e); |
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}
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} else if (e.type == 'touchend') { |
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if (e.currentTarget.id == 'sw-cancel' || e.currentTarget.id == 'sw-done') { |
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this.tapUp(e); |
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} else if (e.currentTarget.id == 'sw-frame') { |
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this.scrollEnd(e); |
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}
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} else if (e.type == 'webkitTransitionEnd') { |
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if (e.target.id == 'sw-wrapper') { |
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this.destroy(); |
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} else { |
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this.backWithinBoundaries(e); |
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}
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} else if (e.type == 'orientationchange') { |
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this.onOrientationChange(e); |
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} else if (e.type == 'scroll') { |
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this.onScroll(e); |
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}
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},
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/**
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*
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* Global events
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*
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*/
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onOrientationChange: function (e) { |
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window.scrollTo(0, 0); |
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this.swWrapper.style.top = window.innerHeight + window.pageYOffset + 'px'; |
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this.calculateSlotsWidth(); |
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},
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onScroll: function (e) { |
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this.swWrapper.style.top = window.innerHeight + window.pageYOffset + 'px'; |
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},
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lockScreen: function (e) { |
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e.preventDefault(); |
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e.stopPropagation(); |
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},
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/**
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*
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* Initialization
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*
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*/
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reset: function () { |
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this.slotEl = []; |
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this.activeSlot = null; |
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this.swWrapper = undefined; |
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this.swSlotWrapper = undefined; |
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this.swSlots = undefined; |
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this.swFrame = undefined; |
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},
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calculateSlotsWidth: function () { |
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var div = this.swSlots.getElementsByTagName('div'); |
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for (var i = 0; i < div.length; i += 1) { |
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this.slotEl[i].slotWidth = div[i].offsetWidth; |
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}
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},
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create: function () { |
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var i, l, out, ul, div; |
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this.reset(); // Initialize object variables |
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// Create the Spinning Wheel main wrapper
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div = document.createElement('div'); |
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div.id = 'sw-wrapper'; |
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div.style.top = window.innerHeight + window.pageYOffset + 'px'; // Place the SW down the actual viewing screen |
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div.style.webkitTransitionProperty = '-webkit-transform'; |
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div.innerHTML = '<div id="sw-header"><div id="sw-cancel">Cancel</' + 'div><div id="sw-done">Done</' + 'div></' + 'div><div id="sw-slots-wrapper"><div id="sw-slots"></' + 'div></' + 'div><div id="sw-frame"></' + 'div>'; |
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document.body.appendChild(div); |
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this.swWrapper = div; // The SW wrapper |
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this.swSlotWrapper = document.getElementById('sw-slots-wrapper'); // Slots visible area |
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this.swSlots = document.getElementById('sw-slots'); // Pseudo table element (inner wrapper) |
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this.swFrame = document.getElementById('sw-frame'); // The scrolling controller |
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// Create HTML slot elements
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for (l = 0; l < this.slotData.length; l += 1) { |
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// Create the slot
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ul = document.createElement('ul'); |
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out = ''; |
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for (i in this.slotData[l].values) { |
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out += '<li>' + this.slotData[l].values[i] + '<' + '/li>'; |
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}
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ul.innerHTML = out; |
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div = document.createElement('div'); // Create slot container |
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div.className = this.slotData[l].style; // Add styles to the container |
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div.appendChild(ul); |
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// Append the slot to the wrapper
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this.swSlots.appendChild(div); |
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ul.slotPosition = l; // Save the slot position inside the wrapper |
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ul.slotYPosition = 0; |
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ul.slotWidth = 0; |
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ul.slotMaxScroll = this.swSlotWrapper.clientHeight - ul.clientHeight - 86; |
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ul.style.webkitTransitionTimingFunction = 'cubic-bezier(0, 0, 0.2, 1)'; // Add default transition |
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this.slotEl.push(ul); // Save the slot for later use |
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// Place the slot to its default position (if other than 0)
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if (this.slotData[l].defaultValue) { |
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this.scrollToValue(l, this.slotData[l].defaultValue); |
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}
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}
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this.calculateSlotsWidth(); |
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// Global events
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document.addEventListener('touchstart', this, false); // Prevent page scrolling |
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document.addEventListener('touchmove', this, false); // Prevent page scrolling |
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window.addEventListener('orientationchange', this, true); // Optimize SW on orientation change |
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window.addEventListener('scroll', this, true); // Reposition SW on page scroll |
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// Cancel/Done buttons events
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document.getElementById('sw-cancel').addEventListener('touchstart', this, false); |
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document.getElementById('sw-done').addEventListener('touchstart', this, false); |
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// Add scrolling to the slots
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this.swFrame.addEventListener('touchstart', this, false); |
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},
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open: function () { |
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this.create(); |
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this.swWrapper.style.webkitTransitionTimingFunction = 'ease-out'; |
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this.swWrapper.style.webkitTransitionDuration = '400ms'; |
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this.swWrapper.style.webkitTransform = 'translate3d(0, -260px, 0)'; |
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},
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/**
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*
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* Unload
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*
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*/
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destroy: function () { |
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this.swWrapper.removeEventListener('webkitTransitionEnd', this, false); |
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this.swFrame.removeEventListener('touchstart', this, false); |
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document.getElementById('sw-cancel').removeEventListener('touchstart', this, false); |
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document.getElementById('sw-done').removeEventListener('touchstart', this, false); |
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document.removeEventListener('touchstart', this, false); |
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document.removeEventListener('touchmove', this, false); |
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window.removeEventListener('orientationchange', this, true); |
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window.removeEventListener('scroll', this, true); |
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this.slotData = []; |
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this.cancelAction = function () { |
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return false; |
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};
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this.cancelDone = function () { |
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return true; |
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};
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this.reset(); |
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document.body.removeChild(document.getElementById('sw-wrapper')); |
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},
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close: function () { |
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this.swWrapper.style.webkitTransitionTimingFunction = 'ease-in'; |
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this.swWrapper.style.webkitTransitionDuration = '400ms'; |
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this.swWrapper.style.webkitTransform = 'translate3d(0, 0, 0)'; |
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this.swWrapper.addEventListener('webkitTransitionEnd', this, false); |
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},
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/**
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*
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* Generic methods
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*
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*/
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addSlot: function (values, style, defaultValue) { |
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if (!style) { |
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style = ''; |
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}
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style = style.split(' '); |
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for (var i = 0; i < style.length; i += 1) { |
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style[i] = 'sw-' + style[i]; |
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}
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style = style.join(' '); |
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var obj = { 'values': values, 'style': style, 'defaultValue': defaultValue }; |
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this.slotData.push(obj); |
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},
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getSelectedValues: function () { |
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var index, count, |
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i, l, |
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keys = [], values = []; |
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for (i in this.slotEl) { |
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// Remove any residual animation
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//this.slotEl[i].removeEventListener('webkitTransitionEnd', this, false);
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//this.slotEl[i].style.webkitTransitionDuration = '0';
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if (this.slotEl[i].slotYPosition > 0) { |
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this.setPosition(i, 0); |
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} else if (this.slotEl[i].slotYPosition < this.slotEl[i].slotMaxScroll) { |
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this.setPosition(i, this.slotEl[i].slotMaxScroll); |
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}
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index = -Math.round(this.slotEl[i].slotYPosition / this.cellHeight); |
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count = 0; |
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for (l in this.slotData[i].values) { |
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if (count == index) { |
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keys.push(l); |
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values.push(this.slotData[i].values[l]); |
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break; |
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}
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count += 1; |
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}
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}
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return { 'keys': keys, 'values': values }; |
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},
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/**
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*
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* Rolling slots
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*
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*/
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setPosition: function (slot, pos) { |
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this.slotEl[slot].slotYPosition = pos; |
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this.slotEl[slot].style.webkitTransform = 'translate3d(0, ' + pos + 'px, 0)'; |
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},
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scrollStart: function (e) { |
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// Find the clicked slot
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var xPos = e.targetTouches[0].clientX - this.swSlots.offsetLeft; // Clicked position minus left offset (should be 11px) |
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// Find tapped slot
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var slot = 0; |
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for (var i = 0; i < this.slotEl.length; i += 1) { |
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slot += this.slotEl[i].slotWidth; |
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if (xPos < slot) { |
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this.activeSlot = i; |
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break; |
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}
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}
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// If slot is readonly do nothing
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if (this.slotData[this.activeSlot].style.match('readonly')) { |
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this.swFrame.removeEventListener('touchmove', this, false); |
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this.swFrame.removeEventListener('touchend', this, false); |
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return false; |
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}
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this.slotEl[this.activeSlot].removeEventListener('webkitTransitionEnd', this, false); // Remove transition event (if any) |
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this.slotEl[this.activeSlot].style.webkitTransitionDuration = '0'; // Remove any residual transition |
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// Stop and hold slot position
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var theTransform = window.getComputedStyle(this.slotEl[this.activeSlot]).webkitTransform; |
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theTransform = new WebKitCSSMatrix(theTransform).m42; |
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if (theTransform != this.slotEl[this.activeSlot].slotYPosition) { |
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this.setPosition(this.activeSlot, theTransform); |
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}
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this.startY = e.targetTouches[0].clientY; |
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this.scrollStartY = this.slotEl[this.activeSlot].slotYPosition; |
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this.scrollStartTime = e.timeStamp; |
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this.swFrame.addEventListener('touchmove', this, false); |
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this.swFrame.addEventListener('touchend', this, false); |
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return true; |
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},
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scrollMove: function (e) { |
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var topDelta = e.targetTouches[0].clientY - this.startY; |
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if (this.slotEl[this.activeSlot].slotYPosition > 0 || this.slotEl[this.activeSlot].slotYPosition < this.slotEl[this.activeSlot].slotMaxScroll) { |
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topDelta /= 2; |
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}
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this.setPosition(this.activeSlot, this.slotEl[this.activeSlot].slotYPosition + topDelta); |
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this.startY = e.targetTouches[0].clientY; |
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// Prevent slingshot effect
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if (e.timeStamp - this.scrollStartTime > 80) { |
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this.scrollStartY = this.slotEl[this.activeSlot].slotYPosition; |
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this.scrollStartTime = e.timeStamp; |
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}
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},
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scrollEnd: function (e) { |
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this.swFrame.removeEventListener('touchmove', this, false); |
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this.swFrame.removeEventListener('touchend', this, false); |
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// If we are outside of the boundaries, let's go back to the sheepfold
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if (this.slotEl[this.activeSlot].slotYPosition > 0 || this.slotEl[this.activeSlot].slotYPosition < this.slotEl[this.activeSlot].slotMaxScroll) { |
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this.scrollTo(this.activeSlot, this.slotEl[this.activeSlot].slotYPosition > 0 ? 0 : this.slotEl[this.activeSlot].slotMaxScroll); |
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return false; |
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}
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// Lame formula to calculate a fake deceleration
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var scrollDistance = this.slotEl[this.activeSlot].slotYPosition - this.scrollStartY; |
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// The drag session was too short
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if (scrollDistance < this.cellHeight / 1.5 && scrollDistance > -this.cellHeight / 1.5) { |
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if (this.slotEl[this.activeSlot].slotYPosition % this.cellHeight) { |
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this.scrollTo(this.activeSlot, Math.round(this.slotEl[this.activeSlot].slotYPosition / this.cellHeight) * this.cellHeight, '100ms'); |
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}
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return false; |
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}
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var scrollDuration = e.timeStamp - this.scrollStartTime; |
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var newDuration = (2 * scrollDistance / scrollDuration) / this.friction; |
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var newScrollDistance = (this.friction / 2) * (newDuration * newDuration); |
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if (newDuration < 0) { |
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newDuration = -newDuration; |
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newScrollDistance = -newScrollDistance; |
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}
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var newPosition = this.slotEl[this.activeSlot].slotYPosition + newScrollDistance; |
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if (newPosition > 0) { |
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// Prevent the slot to be dragged outside the visible area (top margin)
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newPosition /= 2; |
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newDuration /= 3; |
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if (newPosition > this.swSlotWrapper.clientHeight / 4) { |
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newPosition = this.swSlotWrapper.clientHeight / 4; |
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}
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} else if (newPosition < this.slotEl[this.activeSlot].slotMaxScroll) { |
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// Prevent the slot to be dragged outside the visible area (bottom margin)
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newPosition = (newPosition - this.slotEl[this.activeSlot].slotMaxScroll) / 2 + this.slotEl[this.activeSlot].slotMaxScroll; |
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newDuration /= 3; |
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if (newPosition < this.slotEl[this.activeSlot].slotMaxScroll - this.swSlotWrapper.clientHeight / 4) { |
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newPosition = this.slotEl[this.activeSlot].slotMaxScroll - this.swSlotWrapper.clientHeight / 4; |
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}
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} else { |
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newPosition = Math.round(newPosition / this.cellHeight) * this.cellHeight; |
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}
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this.scrollTo(this.activeSlot, Math.round(newPosition), Math.round(newDuration) + 'ms'); |
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return true; |
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},
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scrollTo: function (slotNum, dest, runtime) { |
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this.slotEl[slotNum].style.webkitTransitionDuration = runtime ? runtime : '100ms'; |
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this.setPosition(slotNum, dest ? dest : 0); |
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// If we are outside of the boundaries go back to the sheepfold
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if (this.slotEl[slotNum].slotYPosition > 0 || this.slotEl[slotNum].slotYPosition < this.slotEl[slotNum].slotMaxScroll) { |
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this.slotEl[slotNum].addEventListener('webkitTransitionEnd', this, false); |
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}
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},
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scrollToValue: function (slot, value) { |
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var yPos, count, i; |
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this.slotEl[slot].removeEventListener('webkitTransitionEnd', this, false); |
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this.slotEl[slot].style.webkitTransitionDuration = '0'; |
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count = 0; |
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for (i in this.slotData[slot].values) { |
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if (i == value) { |
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yPos = count * this.cellHeight; |
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this.setPosition(slot, yPos); |
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break; |
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}
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count -= 1; |
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}
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},
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backWithinBoundaries: function (e) { |
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e.target.removeEventListener('webkitTransitionEnd', this, false); |
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this.scrollTo(e.target.slotPosition, e.target.slotYPosition > 0 ? 0 : e.target.slotMaxScroll, '150ms'); |
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return false; |
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},
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||
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/**
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*
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* Buttons
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*
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*/
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tapDown: function (e) { |
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e.currentTarget.addEventListener('touchmove', this, false); |
|
455 |
e.currentTarget.addEventListener('touchend', this, false); |
|
456 |
e.currentTarget.className = 'sw-pressed'; |
|
457 |
},
|
|
458 |
||
459 |
tapCancel: function (e) { |
|
460 |
e.currentTarget.removeEventListener('touchmove', this, false); |
|
461 |
e.currentTarget.removeEventListener('touchend', this, false); |
|
462 |
e.currentTarget.className = ''; |
|
463 |
},
|
|
464 |
||
465 |
tapUp: function (e) { |
|
466 |
this.tapCancel(e); |
|
467 |
||
468 |
if (e.currentTarget.id == 'sw-cancel') { |
|
469 |
this.cancelAction(); |
|
470 |
} else { |
|
471 |
this.doneActionFunction(this.doneActionValues); |
|
472 |
}
|
|
473 |
||
474 |
this.close(); |
|
475 |
},
|
|
476 |
||
477 |
setCancelAction: function (action) { |
|
478 |
this.cancelAction = action; |
|
479 |
},
|
|
480 |
||
481 |
setDoneAction: function (action,values) { |
|
482 |
this.doneActionFunction = action; |
|
483 |
this.doneActionValues = values; |
|
484 |
},
|
|
485 |
||
486 |
cancelAction: function () { |
|
487 |
return false; |
|
488 |
},
|
|
489 |
||
490 |
cancelDone: function () { |
|
491 |
return true; |
|
492 |
}
|
|
493 |
};
|