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Edit File: dashboard.js

/* global pagenow, ajaxurl, postboxes, wpActiveEditor:true */
var ajaxWidgets, ajaxPopulateWidgets, quickPressLoad;

jQuery(document).ready( function($) {
	var welcomePanel = $( '#welcome-panel' ),
		welcomePanelHide = $('#wp_welcome_panel-hide'),
		updateWelcomePanel;

updateWelcomePanel = function( visible ) {
		$.post( ajaxurl, {
			action: 'update-welcome-panel',
			visible: visible,
			welcomepanelnonce: $( '#welcomepanelnonce' ).val()
		});
	};

if ( welcomePanel.hasClass('hidden') && welcomePanelHide.prop('checked') ) {
		welcomePanel.removeClass('hidden');
	}

$('.welcome-panel-close, .welcome-panel-dismiss a', welcomePanel).click( function(e) {
		e.preventDefault();
		welcomePanel.addClass('hidden');
		updateWelcomePanel( 0 );
		$('#wp_welcome_panel-hide').prop('checked', false);
	});

welcomePanelHide.click( function() {
		welcomePanel.toggleClass('hidden', ! this.checked );
		updateWelcomePanel( this.checked ? 1 : 0 );
	});

// These widgets are sometimes populated via ajax
	ajaxWidgets = ['dashboard_primary'];

ajaxPopulateWidgets = function(el) {
		function show(i, id) {
			var p, e = $('#' + id + ' div.inside:visible').find('.widget-loading');
			if ( e.length ) {
				p = e.parent();
				setTimeout( function(){
					p.load( ajaxurl + '?action=dashboard-widgets&widget=' + id + '&pagenow=' + pagenow, '', function() {
						p.hide().slideDown('normal', function(){
							$(this).css('display', '');
						});
					});
				}, i * 500 );
			}
		}

if ( el ) {
			el = el.toString();
			if ( $.inArray(el, ajaxWidgets) !== -1 ) {
				show(0, el);
			}
		} else {
			$.each( ajaxWidgets, show );
		}
	};
	ajaxPopulateWidgets();

postboxes.add_postbox_toggles(pagenow, { pbshow: ajaxPopulateWidgets } );

/* QuickPress */
	quickPressLoad = function() {
		var act = $('#quickpost-action'), t;

$( '#quick-press .submit input[type="submit"], #quick-press .submit input[type="reset"]' ).prop( 'disabled' , false );

t = $('#quick-press').submit( function( e ) {
			e.preventDefault();
			$('#dashboard_quick_press #publishing-action .spinner').show();
			$('#quick-press .submit input[type="submit"], #quick-press .submit input[type="reset"]').prop('disabled', true);

$.post( t.attr( 'action' ), t.serializeArray(), function( data ) {
				// Replace the form, and prepend the published post.
				$('#dashboard_quick_press .inside').html( data );
				$('#quick-press').removeClass('initial-form');
				quickPressLoad();
				highlightLatestPost();
				$('#title').focus();
			});

function highlightLatestPost () {
				var latestPost = $('.drafts ul li').first();
				latestPost.css('background', '#fffbe5');
				setTimeout(function () {
					latestPost.css('background', 'none');
				}, 1000);
			}
		} );

$('#publish').click( function() { act.val( 'post-quickpress-publish' ); } );

$('#title, #tags-input, #content').each( function() {
			var input = $(this), prompt = $('#' + this.id + '-prompt-text');

if ( '' === this.value ) {
				prompt.removeClass('screen-reader-text');
			}

prompt.click( function() {
				$(this).addClass('screen-reader-text');
				input.focus();
			});

input.blur( function() {
				if ( '' === this.value ) {
					prompt.removeClass('screen-reader-text');
				}
			});

input.focus( function() {
				prompt.addClass('screen-reader-text');
			});
		});

$('#quick-press').on( 'click focusin', function() {
			wpActiveEditor = 'content';
		});

autoResizeTextarea();
	};
	quickPressLoad();

$( '.meta-box-sortables' ).sortable( 'option', 'containment', '#wpwrap' );

function autoResizeTextarea() {
		if ( document.documentMode && document.documentMode < 9 ) {
			return;
		}

// Add a hidden div. We'll copy over the text from the textarea to measure its height.
		$('body').append( '<div class="quick-draft-textarea-clone" style="display: none;"></div>' );

var clone = $('.quick-draft-textarea-clone'),
			editor = $('#content'),
			editorHeight = editor.height(),
			// 100px roughly accounts for browser chrome and allows the
			// save draft button to show on-screen at the same time.
			editorMaxHeight = $(window).height() - 100;

// Match up textarea and clone div as much as possible.
		// Padding cannot be reliably retrieved using shorthand in all browsers.
		clone.css({
			'font-family': editor.css('font-family'),
			'font-size':   editor.css('font-size'),
			'line-height': editor.css('line-height'),
			'padding-bottom': editor.css('paddingBottom'),
			'padding-left': editor.css('paddingLeft'),
			'padding-right': editor.css('paddingRight'),
			'padding-top': editor.css('paddingTop'),
			'white-space': 'pre-wrap',
			'word-wrap': 'break-word',
			'display': 'none'
		});

// propertychange is for IE < 9
		editor.on('focus input propertychange', function() {
			var $this = $(this),
				// &nbsp; is to ensure that the height of a final trailing newline is included.
				textareaContent = $this.val() + '&nbsp;',
				// 2px is for border-top & border-bottom
				cloneHeight = clone.css('width', $this.css('width')).text(textareaContent).outerHeight() + 2;

// Default to having scrollbars
			editor.css('overflow-y', 'auto');

// Only change the height if it has indeed changed and both heights are below the max.
			if ( cloneHeight === editorHeight || ( cloneHeight >= editorMaxHeight && editorHeight >= editorMaxHeight ) ) {
				return;
			}

// Don't allow editor to exceed height of window.
			// This is also bound in CSS to a max-height of 1300px to be extra safe.
			if ( cloneHeight > editorMaxHeight ) {
				editorHeight = editorMaxHeight;
			} else {
				editorHeight = cloneHeight;
			}

// No scrollbars as we change height, not for IE < 9
			editor.css('overflow', 'hidden');

$this.css('height', editorHeight + 'px');
		});
	}

} );

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