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Edit File: alpha-picker.js

/**!
 * wp-color-picker-alpha
 *
 * Overwrite Automattic Iris for enabled Alpha Channel in wpColorPicker
 * Only run in input and is defined data alpha in true
 *
 * Version: 2.1.2
 * https://github.com/kallookoo/wp-color-picker-alpha
 * Licensed under the GPLv2 license.
 */
( function( $ ) {
		// Variable for some backgrounds ( grid )
	var image   = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAAHnlligAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAHJJREFUeNpi+P///4EDBxiAGMgCCCAGFB5AADGCRBgYDh48CCRZIJS9vT2QBAggFBkmBiSAogxFBiCAoHogAKIKAlBUYTELAiAmEtABEECk20G6BOmuIl0CIMBQ/IEMkO0myiSSraaaBhZcbkUOs0HuBwDplz5uFJ3Z4gAAAABJRU5ErkJggg==',
		// html stuff for wpColorPicker copy of the original color-picker.js
		_after = '<div class="wp-picker-holder" />',
		_wrap = '<div class="wp-picker-container" />',
		_button = '<input type="button" class="button button-small" />',
		// Prevent CSS issues in < WordPress 4.9
		_deprecated = ( wpColorPickerL10n.current !== undefined );
		// Declare some global variables when is deprecated or not
		if ( _deprecated ) {
			var _before = '<a tabindex="0" class="wp-color-result" />';
		} else {
			var _before = '<button type="button" class="button wp-color-result" aria-expanded="false"><span class="wp-color-result-text"></span></button>',
				_wrappingLabel = '<label></label>',
				_wrappingLabelText = '<span class="screen-reader-text"></span>';
		}
	/**
	 * Overwrite Color
	 * for enable support rbga
	 */
	Color.fn.toString = function() {
		if ( this._alpha < 1 )
			return this.toCSS( 'rgba', this._alpha ).replace( /\s+/g, '' );

var hex = parseInt( this._color, 10 ).toString( 16 );

if ( this.error )
			return '';

if ( hex.length < 6 )
			hex = ( '00000' + hex ).substr( -6 );

return '#' + hex;
	};

/**
	 * Overwrite wpColorPicker
	 */
	$.widget( 'wp.wpColorPicker', $.wp.wpColorPicker, {
		/**
		 * @summary Creates the color picker.
		 *
		 * Creates the color picker, sets default values, css classes and wraps it all in HTML.
		 *
		 * @since 3.5.0
		 *
		 * @access private
		 *
		 * @returns {void}
		 */
		_create: function() {
			// Return early if Iris support is missing.
			if ( ! $.support.iris ) {
				return;
			}

var self = this,
				el = self.element;

// Override default options with options bound to the element.
			$.extend( self.options, el.data() );

// Create a color picker which only allows adjustments to the hue.
			if ( self.options.type === 'hue' ) {
				return self._createHueOnly();
			}

// Bind the close event.
			self.close = $.proxy( self.close, self );

self.initialValue = el.val();

// Add a CSS class to the input field.
			el.addClass( 'wp-color-picker' );

if ( _deprecated ) {
				el.hide().wrap( _wrap );
				self.wrap            = el.parent();
				self.toggler         = $( _before )
					.insertBefore( el )
					.css( { backgroundColor : self.initialValue } )
					.attr( 'title', wpColorPickerL10n.pick )
					.attr( 'data-current', wpColorPickerL10n.current );
				self.pickerContainer = $( _after ).insertAfter( el );
				self.button          = $( _button ).addClass('hidden');
			} else {
				/*
				 * Check if there's already a wrapping label, e.g. in the Customizer.
				 * If there's no label, add a default one to match the Customizer template.
				 */
				if ( ! el.parent( 'label' ).length ) {
					// Wrap the input field in the default label.
					el.wrap( _wrappingLabel );
					// Insert the default label text.
					self.wrappingLabelText = $( _wrappingLabelText )
						.insertBefore( el )
						.text( wpColorPickerL10n.defaultLabel );
				}

/*
				 * At this point, either it's the standalone version or the Customizer
				 * one, we have a wrapping label to use as hook in the DOM, let's store it.
				 */
				self.wrappingLabel = el.parent();

// Wrap the label in the main wrapper.
				self.wrappingLabel.wrap( _wrap );
				// Store a reference to the main wrapper.
				self.wrap = self.wrappingLabel.parent();
				// Set up the toggle button and insert it before the wrapping label.
				self.toggler = $( _before )
					.insertBefore( self.wrappingLabel )
					.css( { backgroundColor: self.initialValue } );
				// Set the toggle button span element text.
				self.toggler.find( '.wp-color-result-text' ).text( wpColorPickerL10n.pick );
				// Set up the Iris container and insert it after the wrapping label.
				self.pickerContainer = $( _after ).insertAfter( self.wrappingLabel );
				// Store a reference to the Clear/Default button.
				self.button = $( _button );
			}

// Set up the Clear/Default button.
			if ( self.options.defaultColor ) {
				self.button.addClass( 'wp-picker-default' ).val( wpColorPickerL10n.defaultString );
				if ( ! _deprecated ) {
					self.button.attr( 'aria-label', wpColorPickerL10n.defaultAriaLabel );
				}
			} else {
				self.button.addClass( 'wp-picker-clear' ).val( wpColorPickerL10n.clear );
				if ( ! _deprecated ) {
					self.button.attr( 'aria-label', wpColorPickerL10n.clearAriaLabel );
				}
			}

if ( _deprecated ) {
				el.wrap( '<span class="wp-picker-input-wrap" />' ).after( self.button );
			} else {
				// Wrap the wrapping label in its wrapper and append the Clear/Default button.
				self.wrappingLabel
					.wrap( '<span class="wp-picker-input-wrap hidden" />' )
					.after( self.button );

/*
				 * The input wrapper now contains the label+input+Clear/Default button.
				 * Store a reference to the input wrapper: we'll use this to toggle
				 * the controls visibility.
				 */
				self.inputWrapper = el.closest( '.wp-picker-input-wrap' );
			}

el.iris( {
				target: self.pickerContainer,
				hide: self.options.hide,
				width: self.options.width,
				mode: self.options.mode,
				palettes: self.options.palettes,
				/**
				 * @summary Handles the onChange event if one has been defined in the options.
				 *
				 * Handles the onChange event if one has been defined in the options and additionally
				 * sets the background color for the toggler element.
				 *
				 * @since 3.5.0
				 *
				 * @param {Event} event    The event that's being called.
				 * @param {HTMLElement} ui The HTMLElement containing the color picker.
				 *
				 * @returns {void}
				 */
				change: function( event, ui ) {
					if ( self.options.alpha ) {
						self.toggler.css( { 'background-image' : 'url(' + image + ')' } );
						if ( _deprecated ) {
							self.toggler.html( '<span class="color-alpha" />' );
						} else {
							self.toggler.css( {
								'position' : 'relative'
							} );
							if ( self.toggler.find('span.color-alpha').length == 0 ) {
								self.toggler.append('<span class="color-alpha" />');
							}
						}

self.toggler.find( 'span.color-alpha' ).css( {
							'width'                     : '30px',
							'height'                    : '24px',
							'position'                  : 'absolute',
							'top'                       : 0,
							'left'                      : 0,
							'border-top-left-radius'    : '2px',
							'border-bottom-left-radius' : '2px',
							'background'                : ui.color.toString()
						} );
					} else {
						self.toggler.css( { backgroundColor : ui.color.toString() } );
					}

if ( $.isFunction( self.options.change ) ) {
						self.options.change.call( this, event, ui );
					}
				}
			} );

el.val( self.initialValue );
			self._addListeners();

// Force the color picker to always be closed on initial load.
			if ( ! self.options.hide ) {
				self.toggler.click();
			}
		},
		/**
		 * @summary Binds event listeners to the color picker.
		 *
		 * @since 3.5.0
		 *
		 * @access private
		 *
		 * @returns {void}
		 */
		_addListeners: function() {
			var self = this;

/**
			 * @summary Prevent any clicks inside this widget from leaking to the top and closing it.
			 *
			 * @since 3.5.0
			 *
			 * @param {Event} event The event that's being called.
			 *
			 * @returs {void}
			 */
			self.wrap.on( 'click.wpcolorpicker', function( event ) {
				event.stopPropagation();
			});

/**
			 * @summary Open or close the color picker depending on the class.
			 *
			 * @since 3.5
			 */
			self.toggler.click( function(){
				if ( self.toggler.hasClass( 'wp-picker-open' ) ) {
					self.close();
				} else {
					self.open();
				}
			});

/**
			 * @summary Checks if value is empty when changing the color in the color picker.
			 *
			 * Checks if value is empty when changing the color in the color picker.
			 * If so, the background color is cleared.
			 *
			 * @since 3.5.0
			 *
			 * @param {Event} event The event that's being called.
			 *
			 * @returns {void}
			 */
			self.element.on( 'change', function( event ) {
				// Empty or Error = clear
				if ( $( this ).val() === '' || self.element.hasClass( 'iris-error' ) ) {
					if ( self.options.alpha ) {
						if ( _deprecated ) {
							self.toggler.removeAttr( 'style' );
						}
						self.toggler.find( 'span.color-alpha' ).css( 'backgroundColor', '' );
					} else {
						self.toggler.css( 'backgroundColor', '' );
					}

// fire clear callback if we have one
					if ( $.isFunction( self.options.clear ) )
						self.options.clear.call( this, event );
				}
			} );

/**
			 * @summary Enables the user to clear or revert the color in the color picker.
			 *
			 * Enables the user to either clear the color in the color picker or revert back to the default color.
			 *
			 * @since 3.5.0
			 *
			 * @param {Event} event The event that's being called.
			 *
			 * @returns {void}
			 */
			self.button.on( 'click', function( event ) {
				if ( $( this ).hasClass( 'wp-picker-clear' ) ) {
					self.element.val( '' );
					if ( self.options.alpha ) {
						if ( _deprecated ) {
							self.toggler.removeAttr( 'style' );
						}
						self.toggler.find( 'span.color-alpha' ).css( 'backgroundColor', '' );
					} else {
						self.toggler.css( 'backgroundColor', '' );
					}

if ( $.isFunction( self.options.clear ) )
						self.options.clear.call( this, event );

} else if ( $( this ).hasClass( 'wp-picker-default' ) ) {
					self.element.val( self.options.defaultColor ).change();
				}
			});
		},
	});

/**
	 * Overwrite iris
	 */
	$.widget( 'a8c.iris', $.a8c.iris, {
		_create: function() {
			this._super();

// Global option for check is mode rbga is enabled
			this.options.alpha = this.element.data( 'alpha' ) || false;

// Is not input disabled
			if ( ! this.element.is( ':input' ) )
				this.options.alpha = false;

if ( typeof this.options.alpha !== 'undefined' && this.options.alpha ) {
				var self       = this,
					el         = self.element,
					_html      = '<div class="iris-strip iris-slider iris-alpha-slider"><div class="iris-slider-offset iris-slider-offset-alpha"></div></div>',
					aContainer = $( _html ).appendTo( self.picker.find( '.iris-picker-inner' ) ),
					aSlider    = aContainer.find( '.iris-slider-offset-alpha' ),
					controls   = {
						aContainer : aContainer,
						aSlider    : aSlider
					};

if ( typeof el.data( 'custom-width' ) !== 'undefined' ) {
					self.options.customWidth = parseInt( el.data( 'custom-width' ) ) || 0;
				} else {
					self.options.customWidth = 100;
				}

// Set default width for input reset
				self.options.defaultWidth = el.width();

// Update width for input
				if ( self._color._alpha < 1 || self._color.toString().indexOf('rgb') != -1 )
					el.width( parseInt( self.options.defaultWidth + self.options.customWidth ) );

// Push new controls
				$.each( controls, function( k, v ) {
					self.controls[k] = v;
				} );

// Change size strip and add margin for sliders
				self.controls.square.css( { 'margin-right': '0' } );
				var emptyWidth   = ( self.picker.width() - self.controls.square.width() - 20 ),
					stripsMargin = ( emptyWidth / 6 ),
					stripsWidth  = ( ( emptyWidth / 2 ) - stripsMargin );

$.each( [ 'aContainer', 'strip' ], function( k, v ) {
					self.controls[v].width( stripsWidth ).css( { 'margin-left' : stripsMargin + 'px' } );
				} );

// Add new slider
				self._initControls();

// For updated widget
				self._change();
			}
		},
		_initControls: function() {
			this._super();

if ( this.options.alpha ) {
				var self     = this,
					controls = self.controls;

controls.aSlider.slider({
					orientation : 'vertical',
					min         : 0,
					max         : 100,
					step        : 1,
					value       : parseInt( self._color._alpha * 100 ),
					slide       : function( event, ui ) {
						// Update alpha value
						self._color._alpha = parseFloat( ui.value / 100 );
						self._change.apply( self, arguments );
					}
				});
			}
		},
		_change: function() {
			this._super();

var self = this,
				el   = self.element;

if ( this.options.alpha ) {
				var	controls     = self.controls,
					alpha        = parseInt( self._color._alpha * 100 ),
					color        = self._color.toRgb(),
					gradient     = [
						'rgb(' + color.r + ',' + color.g + ',' + color.b + ') 0%',
						'rgba(' + color.r + ',' + color.g + ',' + color.b + ', 0) 100%'
					],
					defaultWidth = self.options.defaultWidth,
					customWidth  = self.options.customWidth,
					target       = self.picker.closest( '.wp-picker-container' ).find( '.wp-color-result' );

// Generate background slider alpha, only for CSS3 old browser fuck!! :)
				controls.aContainer.css( { 'background' : 'linear-gradient(to bottom, ' + gradient.join( ', ' ) + '), url(' + image + ')' } );

if ( target.hasClass( 'wp-picker-open' ) ) {
					// Update alpha value
					controls.aSlider.slider( 'value', alpha );

/**
					 * Disabled change opacity in default slider Saturation ( only is alpha enabled )
					 * and change input width for view all value
					 */
					if ( self._color._alpha < 1 ) {
						controls.strip.attr( 'style', controls.strip.attr( 'style' ).replace( /rgba$([0-9]+,)(\s+)?([0-9]+,)(\s+)?([0-9]+)(,(\s+)?[0-9\.]+)$/g, 'rgb($1$3$5)' ) );
						el.width( parseInt( defaultWidth + customWidth ) );
					} else {
						el.width( defaultWidth );
					}
				}
			}

var reset = el.data( 'reset-alpha' ) || false;

if ( reset ) {
				self.picker.find( '.iris-palette-container' ).on( 'click.palette', '.iris-palette', function() {
					self._color._alpha = 1;
					self.active        = 'external';
					self._change();
				} );
			}
		},
		_addInputListeners: function( input ) {
			var self            = this,
				debounceTimeout = 100,
				callback        = function( event ) {
					var color = new Color( input.val() ),
						val   = input.val();

input.removeClass( 'iris-error' );
					// we gave a bad color
					if ( color.error ) {
						// don't error on an empty input
						if ( val !== '' )
							input.addClass( 'iris-error' );
					} else {
						if ( color.toString() !== self._color.toString() ) {
							// let's not do this on keyup for hex shortcodes
							if ( ! ( event.type === 'keyup' && val.match( /^[0-9a-fA-F]{3}$/ ) ) )
								self._setOption( 'color', color.toString() );
						}
					}
				};

input.on( 'change', callback ).on( 'keyup', self._debounce( callback, debounceTimeout ) );

// If we initialized hidden, show on first focus. The rest is up to you.
			if ( self.options.hide ) {
				input.on( 'focus', function() {
					self.show();
				} );
			}
		}
	} );
}( jQuery ) );

// Auto Call plugin is class is color-picker
jQuery( document ).ready( function( $ ) {
	$( '.color-picker' ).wpColorPicker();
} );