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Diffstat (limited to 'views/layouts/presentation_files/iphone-style-checkboxes.js')
| -rw-r--r-- | views/layouts/presentation_files/iphone-style-checkboxes.js | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/views/layouts/presentation_files/iphone-style-checkboxes.js b/views/layouts/presentation_files/iphone-style-checkboxes.js new file mode 100644 index 0000000..867d9b1 --- /dev/null +++ b/views/layouts/presentation_files/iphone-style-checkboxes.js @@ -0,0 +1,227 @@ +/*! +// iPhone-style Checkboxes jQuery plugin +// Copyright Thomas Reynolds, licensed GPL & MIT +*/ +;(function($, iphoneStyle) { + +// Constructor +$[iphoneStyle] = function(elem, options) { + this.$elem = $(elem); + + // Import options into instance variables + var obj = this; + $.each(options, function(key, value) { + obj[key] = value; + }); + + // Initialize the control + this.wrapCheckboxWithDivs(); + this.attachEvents(); + this.disableTextSelection(); + + if (this.resizeHandle) { this.optionallyResize('handle'); } + if (this.resizeContainer) { this.optionallyResize('container'); } + + this.initialPosition(); +}; + +$.extend($[iphoneStyle].prototype, { + // Wrap the existing input[type=checkbox] with divs for styling and grab DOM references to the created nodes + wrapCheckboxWithDivs: function() { + this.$elem.wrap('<div class="' + this.containerClass + '" />'); + this.container = this.$elem.parent(); + + this.offLabel = $('<label class="'+ this.labelOffClass +'">' + + '<span>'+ this.uncheckedLabel +'</span>' + + '</label>').appendTo(this.container); + this.offSpan = this.offLabel.children('span'); + + this.onLabel = $('<label class="'+ this.labelOnClass +'">' + + '<span>'+ this.checkedLabel +'</span>' + + '</label>').appendTo(this.container); + this.onSpan = this.onLabel.children('span'); + + this.handle = $('<div class="' + this.handleClass + '">' + + '</div>').appendTo(this.container); + }, + + // Disable IE text selection, other browsers are handled in CSS + disableTextSelection: function() { + if (!$.browser.msie) { return; } + + // Elements containing text should be unselectable + $.each([this.handle, this.offLabel, this.onLabel, this.container], function(el) { + $(el).attr("unselectable", "on"); + }); + }, + + // Automatically resize the handle or container + optionallyResize: function(mode) { + var onLabelWidth = this.onLabel.width(), + offLabelWidth = this.offLabel.width(); + + if (mode == 'container') { + var newWidth = (onLabelWidth > offLabelWidth) ? onLabelWidth : offLabelWidth; + newWidth += this.handle.width(); + } else { + var newWidth = (onLabelWidth < offLabelWidth) ? onLabelWidth : offLabelWidth; + } + + this[mode].css({ width: newWidth }); + }, + + attachEvents: function() { + var obj = this; + + // A mousedown anywhere in the control will start tracking for dragging + this.container + .bind('mousedown touchstart', function(event) { + event.preventDefault(); + + if (obj.$elem.is(':disabled')) { return; } + + var x = event.pageX || event.originalEvent.changedTouches[0].pageX; + $[iphoneStyle].currentlyClicking = obj.handle; + $[iphoneStyle].dragStartPosition = x; + $[iphoneStyle].handleLeftOffset = parseInt(obj.handle.css('left'), 0) || 0; + }) + + // Utilize event bubbling to handle drag on any element beneath the container + .bind('iPhoneDrag', function(event, x) { + event.preventDefault(); + + if (obj.$elem.is(':disabled')) { return; } + + var p = (x + $[iphoneStyle].handleLeftOffset - $[iphoneStyle].dragStartPosition) / obj.rightSide; + if (p < 0) { p = 0; } + if (p > 1) { p = 1; } + obj.handle.css({ left: p * obj.rightSide }); + obj.onLabel.css({ width: p * obj.rightSide + 8 }); + obj.offSpan.css({ marginRight: -p * obj.rightSide }); + obj.onSpan.css({ marginLeft: -(1 - p) * obj.rightSide }); + }) + + // Utilize event bubbling to handle drag end on any element beneath the container + .bind('iPhoneDragEnd', function(event, x) { + if (obj.$elem.is(':disabled')) { return; } + + if ($[iphoneStyle].dragging) { + var p = (x - $[iphoneStyle].dragStartPosition) / obj.rightSide; + obj.$elem.attr('checked', (p >= 0.5)); + } else { + obj.$elem.attr('checked', !obj.$elem.attr('checked')); + } + + $[iphoneStyle].currentlyClicking = null; + $[iphoneStyle].dragging = null; + obj.$elem.change(); + }); + + // Animate when we get a change event + this.$elem.change(function() { + if (obj.$elem.is(':disabled')) { + obj.container.addClass(obj.disabledClass); + return false; + } else { + obj.container.removeClass(obj.disabledClass); + } + + var new_left = obj.$elem.attr('checked') ? obj.rightSide : 0; + new_left = new_left; + + if (new_left==26) { + obj.onLabel.animate({ width: 40 }, obj.duration); + obj.handle.animate({ left: 25 }, obj.duration); + } else { + obj.onLabel.animate({ width: 0 }, obj.duration); + obj.handle.animate({ left: 1 }, obj.duration); + } + obj.offSpan.animate({ marginRight: -new_left }, obj.duration); + obj.onSpan.animate({ marginLeft: new_left - obj.rightSide }, obj.duration); + }); + }, + + // Setup the control's inital position + initialPosition: function() { + this.offLabel.css({ width: this.container.width() -5 }); + + var offset = ($.browser.msie && $.browser.version < 7) ? 3 : 6; + this.rightSide = this.container.width() - this.handle.width() - offset; + + if (this.$elem.is(':checked')) { + this.handle.css({ left: this.rightSide -1 }); + this.onLabel.css({ width: this.rightSide + 14 }); + this.offSpan.css({ marginRight: -this.rightSide }); + } else { + this.onLabel.css({ width: 0 }); + this.onSpan.css({ marginLeft: -this.rightSide }); + } + + if (this.$elem.is(':disabled')) { + this.container.addClass(this.disabledClass); + } + } +}); + +// jQuery-specific code +$.fn[iphoneStyle] = function(options) { + var checkboxes = this.filter(':checkbox'); + + // Fail early if we don't have any checkboxes passed in + if (!checkboxes.length) { return this; } + + // Merge options passed in with global defaults + var opt = $.extend({}, $[iphoneStyle].defaults, options); + + checkboxes.each(function() { + $(this).data(iphoneStyle, new $[iphoneStyle](this, opt)); + }); + + if (!$[iphoneStyle].initComplete) { + // As the mouse moves on the page, animate if we are in a drag state + $(document) + .bind('mousemove touchmove', function(event) { + if (!$[iphoneStyle].currentlyClicking) { return; } + event.preventDefault(); + + var x = event.pageX || event.originalEvent.changedTouches[0].pageX; + if (!$[iphoneStyle].dragging && + (Math.abs($[iphoneStyle].dragStartPosition - x) > opt.dragThreshold)) { + $[iphoneStyle].dragging = true; + } + + $(event.target).trigger('iPhoneDrag', [x]); + }) + + // When the mouse comes up, leave drag state + .bind('mouseup touchend', function(event) { + if (!$[iphoneStyle].currentlyClicking) { return; } + event.preventDefault(); + + var x = event.pageX || event.originalEvent.changedTouches[0].pageX; + $($[iphoneStyle].currentlyClicking).trigger('iPhoneDragEnd', [x]); + }); + + $[iphoneStyle].initComplete = true; + } + + return this; +}; // End of $.fn[iphoneStyle] + +$[iphoneStyle].defaults = { + duration: 200, // Time spent during slide animation + checkedLabel: 'on', // Text content of "on" state + uncheckedLabel: 'off', // Text content of "off" state + resizeHandle: false, // Automatically resize the handle to cover either label + resizeContainer: true, // Automatically resize the widget to contain the labels + disabledClass: 'iPhoneCheckDisabled', + containerClass: 'iPhoneCheckContainer', + labelOnClass: 'iPhoneCheckLabelOn', + labelOffClass: 'iPhoneCheckLabelOff', + handleClass: 'iPhoneCheckHandle', + handleCenterClass: 'iPhoneCheckHandleCenter', + handleRightClass: 'iPhoneCheckHandleRight', + dragThreshold: 5 // Pixels that must be dragged for a click to be ignored +}; + +})(jQuery, 'iphoneStyle'); |