/**
 * File: CMSMain.EditForm.js
 */
(function($) {
	$.entwine('ss', function($){
		/**
		 * Class: .cms-edit-form :input[name=ClassName]
		 * Alert the user on change of page-type. This might have implications
		 * on the available form fields etc.
		 */
		$('.cms-edit-form :input[name=ClassName]').entwine({
			// Function: onchange
			onchange: function() {
				alert(ss.i18n._t('CMSMAIN.ALERTCLASSNAME'));
			}
		});

		/**
		 * Class: .cms-edit-form input[name=Title]
		 * 
		 * Input validation on the Title field
		 */
		$('.cms-edit-form input[name=Title]').entwine({
			// Constructor: onmatch
			onmatch : function() {
				var self = this;
				
				var URLSegment = $('.cms-edit-form input[name=URLSegment]');
				var LiveURLSegment = $('.cms-edit-form input[name=LiveURLSegment]');
		
				this.bind('change', function(e) {
					// Criteria for defining a "new" page
					if ( (URLSegment.val().indexOf("new") == 0) && LiveURLSegment.val() == "" ) {
						self.updatePageTitleHeading();
						self.parents('form').find('input[name=MetaTitle], input[name=MenuTitle]').val(self.val());
						// update the URLSegment
						URLSegment.closest('.urlsegment').update(self);
					} else {
						return;
					}
				});
				
				this._super();
			},
			
			/**
			 * Function: updatePageTitleHeading
			 * 
			 * Update the page title heading when page title changes
			 */
			updatePageTitleHeading: function() {
				$('#page-title-heading').text(this.val());
			}
		});
	
		/**
		 * Class: .cms-edit-form .parentTypeSelector
		 * 
		 * ParentID field combination - mostly toggling between
		 * the two radiobuttons and setting the hidden "ParentID" field
		 */
		$('.cms-edit-form .parentTypeSelector').entwine({
			// Constructor: onmatch
			onmatch : function() {
				var self = this;
				this.find(':input[name=ParentType]').bind('click', function(e) {self._toggleSelection(e);});
				this.find('.TreeDropdownField').bind('change', function(e) {self._changeParentId(e);});
				
				this._changeParentId();
				this._toggleSelection();
				
				this._super();
			},
	
			/**
			 * Function: _toggleSelection
			 * 
			 * Parameters:
			 *  (Event) e
			 */
			_toggleSelection: function(e) {
				var selected = this.find(':input[name=ParentType]:checked').val();
				// reset parent id if 'root' radiobutton is selected
				if(selected == 'root') this.find(':input[name=ParentID]').val(0);
				// otherwise use the old value
				else this.find(':input[name=ParentID]').val(this.find('#Form_EditForm_ParentType_subpage').data('parentIdValue'));
				// toggle tree dropdown based on selection
				this.find('#ParentID').toggle(selected != 'root');
			},
			
			/**
			 * Function: _changeParentId
			 * 
			 * Parameters:
			 *  (Event) e
			 */
			_changeParentId: function(e) {
				var value = this.find(':input[name=ParentID]').val();
				// set a data attribute so we know what to use in _toggleSelection
				this.find('#Form_EditForm_ParentType_subpage').data('parentIdValue', value);
			}
		});

		/**
		 * Class: .cms-edit-form #CanViewType, .cms-edit-form #CanEditType
		 * 
		 * Toggle display of group dropdown in "access" tab,
		 * based on selection of radiobuttons.
		 */
		$('.cms-edit-form #CanViewType, .cms-edit-form #CanEditType, .cms-edit-form #CanCreateTopLevelType').entwine({
			// Constructor: onmatch
			onmatch: function() {
				// TODO Decouple
				var dropdown;
				if(this.attr('id') == 'CanViewType') dropdown = $('#ViewerGroups');
				else if(this.attr('id') == 'CanEditType') dropdown = $('#EditorGroups');
				else if(this.attr('id') == 'CanCreateTopLevelType') dropdown = $('#CreateTopLevelGroups');
		
				this.find('.optionset :input').bind('change', function(e) {
					var wrapper = $(this).closest('.middleColumn').parent('div');
					if(e.target.value == 'OnlyTheseUsers') {
						wrapper.addClass('remove-splitter');
						dropdown['show']();
					}
					else {
						wrapper.removeClass('remove-splitter');
						dropdown['hide']();	
					}
				});
		
				// initial state
				var currentVal = this.find('input[name=' + this.attr('id') + ']:checked').val();
				dropdown[currentVal == 'OnlyTheseUsers' ? 'show' : 'hide']();
				
				this._super();
			}
		});	

		/**
		 * Class: .cms-edit-form .Actions #Form_EditForm_action_print
		 * 
		 * Open a printable representation of the form in a new window.
		 * Used for readonly older versions of a specific page.
		 */
		$('.cms-edit-form .Actions #Form_EditForm_action_print').entwine({
			/**
			 * Function: onclick
			 * 
			 * Parameters:
			 *  (Event) e
			 */
			onclick: function(e) {
				var printURL = $(this[0].form).attr('action').replace(/\?.*$/,'') 
					+ '/printable/' 
					+ $(':input[name=ID]',this[0].form).val();
				if(printURL.substr(0,7) != 'http://') printURL = $('base').attr('href') + printURL;

				window.open(printURL, 'printable');
	
				return false;
			}
		});

		/**
		 * Class: .cms-edit-form .Actions #Form_EditForm_action_rollback
		 * 
		 * A "rollback" to a specific version needs user confirmation.
		 */
		$('.cms-edit-form .Actions #Form_EditForm_action_rollback').entwine({
			
			/**
			 * Function: onclick
			 * 
			 * Parameters:
			 *  (Event) e
			 */
			onclick: function(e) {
				var form = this.parents('form:first'), version = form.find(':input[name=Version]').val(), message = '';
				if(version) {
					message = ss.i18n.sprintf(
						ss.i18n._t('CMSMain.RollbackToVersion'), 
						version
					);
				} else {
					message = ss.i18n._t('CMSMain.ConfirmRestoreFromLive');
				}
				if(confirm(message)) {
					return this._super(e);
				} else {
					return false;
				}
			}
		});

		/**
		 * Class: .cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked
		 *
		 * Showing the "Page location" "Parent page" chooser only when the "Sub-page underneath a parent page"
		 * radio button is selected
		 */
		$('.cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked').entwine({
			onmatch: function() {
				this.redraw();
				this._super();
			},
			redraw: function() {
				var treeField = $('.cms-edit-form.CMSPageSettingsController #ParentID');
				if ($(this).attr('id') == 'Form_EditForm_ParentType_root') treeField.slideUp();
				else treeField.slideDown();
			},
			onclick: function() {
				this.redraw();
			}
		});

		//trigger an initial change event to do the initial hiding of the element, if necessary
		if ($('.cms-edit-form.CMSPageSettingsController input[name="ParentType"]:checked').attr('id') == 'Form_EditForm_ParentType_root') {
			$('.cms-edit-form.CMSPageSettingsController #ParentID').hide(); //quick hide on first run
		}
	});
}(jQuery));