WordPress/wp-admin/js/post.js

// this file contains all the scripts used in the post/edit page

function new_tag_remove_tag() {
	var id = jQuery( this ).attr( 'id' );
	var num = id.substr( 10 );
	var current_tags = jQuery( '#tags-input' ).val().split(',');
	delete current_tags[num];
	var new_tags = [];
	jQuery.each( current_tags, function( key, val ) {
		if ( val && !val.match(/^\s+$/) && '' != val ) {
			new_tags = new_tags.concat( val );
		}
	});
	jQuery( '#tags-input' ).val( new_tags.join( ',' ).replace( /\s*,+\s*/, ',' ).replace( /,+/, ',' ).replace( /,+\s+,+/, ',' ).replace( /,+\s*$/, '' ).replace( /^\s*,+/, '' ) );
	tag_update_quickclicks();
	jQuery('#newtag').focus();
	return false;
}

function tag_update_quickclicks() {
	var current_tags = jQuery( '#tags-input' ).val().split(',');
	jQuery( '#tagchecklist' ).empty();
	shown = false;
//	jQuery.merge( current_tags, current_tags ); // this doesn't work anymore, need something to array_unique
	jQuery.each( current_tags, function( key, val ) {
		val = val.replace( /^\s+/, '' ).replace( /\s+$/, '' ); // trim
		if ( !val.match(/^\s+$/) && '' != val ) {
			txt = '<span><a id="tag-check-' + key + '" class="ntdelbutton">X</a>&nbsp;' + val + '</span> ';
			jQuery( '#tagchecklist' ).append( txt );
			jQuery( '#tag-check-' + key ).click( new_tag_remove_tag );
			shown = true;
		}
	});
	if ( shown )
		jQuery( '#tagchecklist' ).prepend( '<strong>'+postL10n.tagsUsed+'</strong><br />' );
}

function tag_flush_to_text() {
	var newtags = jQuery('#tags-input').val() + ',' + jQuery('#newtag').val();
	// massage
	newtags = newtags.replace( /\s+,+\s*/g, ',' ).replace( /,+/g, ',' ).replace( /,+\s+,+/g, ',' ).replace( /,+\s*$/g, '' ).replace( /^\s*,+/g, '' );
	jQuery('#tags-input').val( newtags );
	tag_update_quickclicks();
	jQuery('#newtag').val('');
	jQuery('#newtag').focus();
	return false;
}

function tag_save_on_publish() {
	if ( jQuery('#newtag').val() != postL10n.addTag )
		tag_flush_to_text();
}

function tag_press_key( e ) {
	if ( 13 == e.keyCode ) {
		tag_flush_to_text();
		return false;
	}
}

jQuery(document).ready( function() {
	// close postboxes that should be closed
	jQuery('.if-js-closed').removeClass('if-js-closed').addClass('closed');

	// show things that should be visible, hide what should be hidden
	jQuery('.hide-if-no-js').show();
	jQuery('.hide-if-js').hide();

	// postboxes
	add_postbox_toggles('post');

	// Editable slugs
	make_slugedit_clickable();

	// hide advanced slug field
	jQuery('#slugdiv').hide();

	jQuery('#tags-input').hide();
	tag_update_quickclicks();
	// add the quickadd form
	jQuery('#jaxtag').prepend('<span id="ajaxtag"><input type="text" name="newtag" id="newtag" class="form-input-tip" size="16" autocomplete="off" value="'+postL10n.addTag+'" /><input type="button" class="button" id="tagadd" value="' + postL10n.add + '" tabindex="3" /><input type="hidden"/><input type="hidden"/><span class="howto">'+postL10n.separate+'</span></span>');
	jQuery('#tagadd').click( tag_flush_to_text );
	jQuery('#newtag').focus(function() {
		if ( this.value == postL10n.addTag )
			jQuery(this).val( '' ).removeClass( 'form-input-tip' );
	});
	jQuery('#newtag').blur(function() {
		if ( this.value == '' )
			jQuery(this).val( postL10n.addTag ).addClass( 'form-input-tip' );
	});

	// auto-save tags on post save/publish
	jQuery('#publish').click( tag_save_on_publish );
	jQuery('#save-post').click( tag_save_on_publish );

	jQuery('#title').blur( function() { if ( (jQuery("#post_ID").val() > 0) || (jQuery("#title").val().length == 0) ) return; autosave(); } );

	// auto-suggest stuff
	jQuery('#newtag').suggest( 'admin-ajax.php?action=ajax-tag-search', { delay: 500, minchars: 2 } );
	jQuery('#newtag').keypress( tag_press_key );

	// category tabs
	var categoryTabs =jQuery('#category-tabs').tabs();

	// Ajax Cat
	var newCat = jQuery('#newcat').one( 'focus', function() { jQuery(this).val( '' ).removeClass( 'form-input-tip' ) } );
	jQuery('#category-add-sumbit').click( function() { newCat.focus(); } );
	var newCatParent = false;
	var newCatParentOption = false;
	var noSyncChecks = false; // prophylactic. necessary?
	var syncChecks = function() {
		if ( noSyncChecks )
			return;
		noSyncChecks = true;
		var th = jQuery(this);
		var c = th.is(':checked');
		var id = th.val().toString();
		jQuery('#in-category-' + id + ', #in-popular-category-' + id).attr( 'checked', c );
		noSyncChecks = false;
	};
	var catAddAfter = function( r, s ) {
		if ( !newCatParent ) newCatParent = jQuery('#newcat_parent');
		if ( !newCatParentOption ) newCatParentOption = newCatParent.find( 'option[value=-1]' );
		jQuery(s.what + ' response_data', r).each( function() {
			var t = jQuery(jQuery(this).text());
			t.find( 'label' ).each( function() {
				var th = jQuery(this);
				var val = th.find('input').val();
				var id = th.find('input')[0].id
				jQuery('#' + id).change( syncChecks );
				if ( newCatParent.find( 'option[value=' + val + ']' ).size() )
					return;
				var name = jQuery.trim( th.text() );
				var o = jQuery( '<option value="' +  parseInt( val, 10 ) + '"></option>' ).text( name );
				newCatParent.prepend( o );
			} );
			newCatParentOption.attr( 'selected', true );
		} );
	};
	jQuery('#categorychecklist').wpList( {
		alt: '',
		response: 'category-ajax-response',
		addAfter: catAddAfter
	} );
	jQuery('#category-add-toggle').click( function() {
		jQuery(this).parents('div:first').toggleClass( 'wp-hidden-children' );
		categoryTabs.tabsClick( 1 );
		jQuery('#newcat').focus();
		return false;
	} );
	jQuery('.categorychecklist :checkbox').change( syncChecks ).filter( ':checked' ).change();

	jQuery('.edit-timestamp').click(function () {
		if (jQuery('#timestampdiv').is(":hidden")) {
			jQuery('#timestampdiv').slideDown("normal");
			jQuery('.edit-timestamp').text(postL10n.cancel);
		} else {
			jQuery('#timestampdiv').hide();
			jQuery('#mm').val(jQuery('#hidden_mm').val());
			jQuery('#jj').val(jQuery('#hidden_jj').val());
			jQuery('#aa').val(jQuery('#hidden_aa').val());
			jQuery('#hh').val(jQuery('#hidden_hh').val());
			jQuery('#mn').val(jQuery('#hidden_mn').val());
			jQuery('.edit-timestamp').text(postL10n.edit);
		}
		return false;

	});

	// Custom Fields
	jQuery('#the-list').wpList( { addAfter: function( xml, s ) {
		if ( jQuery.isFunction( autosave_update_post_ID ) ) {
			autosave_update_post_ID(s.parsed.responses[0].supplemental.postid);
		}
	} });
});