More work in progress of mail tree:

-Initiate first level of mailboxes in subscription dialog, and let autoloading do the rest of expensive operation
-Save last state of tree in subscription dialog
-Uses new approach for comparing subscribed and unsubscribed folders

mail/inc/class.mail_tree.inc.php

@@ -97,20 +97,36 @@ class mail_tree
 	 * @param string $path a node path
 	 * @return array returns an array of data extracted from given node path
 	 */
-	static function getFolderData ($_path, $_hDelimiter)
+	static function pathToFolderData ($_path, $_hDelimiter)
 	{
 		list(,$path) = explode(self::$delimiter, $_path);
-		$parts = explode($_hDelimiter, $path);
+		$path_chain = $parts = explode($_hDelimiter, $path);
 		$name = array_pop($parts);
 		return array (
 			'name' => $name,
 			'mailbox' => $path,
 			'parent' => implode($_hDelimiter, $parts),
 			'text' => $name,
-			'tooltip' => $name
+			'tooltip' => $name,
+			'path' => $path_chain
 		);
 	}
 	
+	/**
+	 * Check if a given node has children attribute set
+	 *
+	 * @param array $_node array of a node
+	 * @return int returns 1 if it has children flag set otherwise 0
+	 */
+	private static function nodeHasChildren ($_node)
+	{
+		$hasChildren = 0;
+		if (in_array('\haschildren', $_node['ATTRIBUTES']) ||
+				in_array('\Haschildren', $_node['ATTRIBUTES']) ||
+				in_array('\HasChildren', $_node['ATTRIBUTES'])) $hasChildren = 1;
+		return $hasChildren;
+	}
+
 	/**
 	 * getTree provides tree structure regarding to selected node
 	 *
@@ -118,22 +134,15 @@ class mail_tree
 	 * @param string $_profileID = '' icServer id
 	 * @param int|boolean $_openTopLevel = 1 Open top level folders on load if it's set to 1|true,
 	 *  false|0 leaves them in closed state
+	 * @param $_noCheckboxNS = false no checkbox for namesapaces makes sure to not put checkbox for namespaces node
 	 *
 	 * @return array returns an array of mail tree structure according to provided node
 	 */
-	function getTree ($_parent = null, $_profileID = '', $_openTopLevel = 1)
+	function getTree ($_parent = null, $_profileID = '', $_openTopLevel = 1, $_noCheckboxNS = false)
 	{
 		//Init mail folders
 		$tree = array(tree::ID=> $_parent?$_parent:0,tree::CHILDREN => array());
 		$hDelimiter = $this->ui->mail_bo->getHierarchyDelimiter();
-		$fn_nodeHasChildren = function ($_node)
-		{
-			$hasChildren = 0;
-			if (in_array('\haschildren', $_node['ATTRIBUTES']) ||
-					in_array('\Haschildren', $_node['ATTRIBUTES']) ||
-					in_array('\HasChildren', $_node['ATTRIBUTES'])) $hasChildren = 1;
-			return $hasChildren;
-		};
 		
 		if ($_parent) list($_profileID) = explode(self::$delimiter, $_parent);
 				
@@ -151,8 +160,8 @@ class mail_tree
 		{
 			try
 			{
-				$nodeInfo = self::getFolderData($_parent, $hDelimiter);
+				$nodeInfo = self::pathToFolderData($_parent, $hDelimiter);	
-				$folders = $this->ui->mail_bo->getFolderArray($nodeInfo['mailbox']);
+				$folders = $this->ui->mail_bo->getFolderArray($nodeInfo['mailbox'],false,2);
 			} catch (Exception $ex) {
 				return self::treeLeafNoConnectionArray($_profileID, $ex->getMessage(),array($_profileID), '');
 			}
@@ -161,10 +170,10 @@ class mail_tree
 			foreach ($folders as &$node)
 			{
 				$nodeId = $_profileID.self::$delimiter.$node['MAILBOX'];
-				$nodeData = self::getFolderData($nodeId, $node['delimiter']);
+				$nodeData = self::pathToFolderData($nodeId, $node['delimiter']);
 				$childrenNode[] = array(
 					tree::ID=> $nodeId,
-					tree::AUTOLOAD_CHILDREN => $fn_nodeHasChildren($node),
+					tree::AUTOLOAD_CHILDREN => self::nodeHasChildren($node),
 					tree::CHILDREN =>array(),
 					tree::LABEL => $nodeData['text'],
 					tree::TOOLTIP => $nodeData['tooltip'],
@@ -201,6 +210,7 @@ class mail_tree
 											'sieve' => $accObj->imapServer()->acc_sieve_enabled,
 											'spamfolder'=> $accObj->imapServer()->acc_folder_junk?true:false
 										),
+								tree::NOCHECKBOX  => $_noCheckboxNS		
 				);
 				self::setOutStructure($baseNode, $tree,self::$delimiter);
 			}
@@ -212,14 +222,21 @@ class mail_tree
 			
 			foreach ($foldersList as $index => $topFolder)
 			{
+				$nameSpaces = $this->ui->mail_bo->_getNameSpaces();
+				$noCheckbox = false;
+				foreach ($nameSpaces as &$ns)
+				{
+					if($_noCheckboxNS && $ns['prefix'] === $index.$hDelimiter) $noCheckbox = true;
+				}
 				$parentNode = array(
 					tree::ID=>$_profileID.self::$delimiter.$topFolder[$index]['MAILBOX'],
-					tree::AUTOLOAD_CHILDREN => $fn_nodeHasChildren($topFolder[$index]),
+					tree::AUTOLOAD_CHILDREN => self::nodeHasChildren($topFolder[$index]),
 					tree::CHILDREN =>array(),
 					tree::LABEL =>lang($topFolder[$index]['MAILBOX']),
 					tree::OPEN => $_openTopLevel,
 					tree::TOOLTIP => lang($topFolder[$index]['MAILBOX']),
-					tree::CHECKED => $topFolder[$index]['SUBSCRIBED']
+					tree::CHECKED => $topFolder[$index]['SUBSCRIBED'],
+					tree::NOCHECKBOX => $noCheckbox
 				);
 				if ($index === "INBOX")
 				{
@@ -267,7 +284,7 @@ class mail_tree
 			
 					$childNode = array(
 						tree::ID => $nodeId,
-						tree::AUTOLOAD_CHILDREN => $fn_nodeHasChildren($node),
+						tree::AUTOLOAD_CHILDREN => self::nodeHasChildren($node),
 						tree::CHILDREN => array(),
 						tree::LABEL => lang($folderName),
 						'parent' => $parentPath,

mail/inc/class.mail_ui.inc.php

@@ -238,10 +238,11 @@ class mail_ui
 	/**
 	 * Ajax function to request next branch of a tree branch
 	 */
-	static function ajax_tree_autoloading ()
+	static function ajax_tree_autoloading ($_id = null)
 	{
 		$mail_ui = new mail_ui();
-		etemplate_widget_tree::send_quote_json($mail_ui->mail_tree->getTree($_GET['id']));
+		$_id = $_id? $_id:$_GET['id'];
+		etemplate_widget_tree::send_quote_json($mail_ui->mail_tree->getTree($_id,'',1,false));
 	}
 	
 	/**
@@ -262,21 +263,30 @@ class mail_ui
 		{
 			egw_framework::window_close('Missing acc_id!');
 		}
-		$sel_options['foldertree'] =  $this->getFolderTree(false, $profileId, false, false);
+		// Initial tree's options, the rest would be loaded dynamicaly by autoloading,
+		// triggered from client-side. Also, we keep this here as
+		$sel_options['foldertree'] =  $this->mail_tree->getTree(null,$profileId,1,true);
+		
+		//Get all subscribed folder
+		// as getting all subscribed folder is very fast operation
+		// we can use it to get a comparison base for folders which
+		// got subscribed or unsubscribed by the user
+		try {
+			$subscribed = $this->mail_bo->icServer->listSubscribedMailboxes('',0,true);
+		} catch (Exception $ex) {
+			egw_framework::message($ex->getMessage());
+		}
 		
 		if (!is_array($content))
 		{
 			$content['foldertree'] = array();
-			$allFolders = $this->mail_bo->getFolderObjects(false,false,false,false);
+			
-			foreach ($allFolders as $folder)
+			foreach ($subscribed as $folder)
-			{
-				$folderName = $profileId . self::$delimiter . $folder->folderName;
-				if ($folder->subscribed)
 			{
+				$folderName = $profileId . self::$delimiter . $folder['MAILBOX'];
 				array_push($content['foldertree'], $folderName);
 			}
 		}
-		}
 		else
 		{
 			list($button) = @each($content['button']);
@@ -291,13 +301,30 @@ class mail_ui
 					{
 						$namespace_roots[] = $profileId . self::$delimiter . str_replace($namespace['delimiter'], '', $namespace['prefix']);
 					}
-					error_log(__METHOD__."() namespace_roots=".array2string($namespace_roots));
+					$to_unsubscribe = $to_subscribe = array();
-					$to_subscribe = array_diff($content['foldertree'], $content['current_subscribed'], $namespace_roots);
+					//$allFoldersData = $this->mail_bo->getFolderArray(null,false,0);
-					$to_unsubscribe = array_diff($content['current_subscribed'], $content['foldertree'], $namespace_roots);
+					foreach ($content['foldertree'] as $path => $value)
+					{
+						list(,$node) = explode($profileId.self::$delimiter, $path);
+						if ($node)
+						{
+							if (is_array($subscribed) && $subscribed[$node] && !$value['value']) $to_unsubscribe []= $node;
+							if (is_array($subscribed) && !$subscribed[$node] && $value['value']) $to_subscribe [] = $node;
+							if ($value['value']) $cont[] = $path;
+						}
+						
+					}
+					$content['foldertree'] = $cont;
+					// set foldertree options to basic node in order to avoid initial autoloading
+					// from client side, as no options would trigger that.
+					$sel_options['foldertree'] = array('id' => '0', 'item'=> array());
 					foreach(array_merge($to_subscribe, $to_unsubscribe) as $mailbox)
 					{
+						if (in_array($profileId.self::$delimiter.$mailbox, $namespace_roots, true))
+						{
+							continue;
+						}
 						$subscribe = in_array($mailbox, $to_subscribe);
-						list(,$mailbox) = explode(self::$delimiter, $mailbox);	// remove profileId and delimiter
 						try {
 							$this->mail_bo->icServer->subscribeMailbox($mailbox, $subscribe);
 						}
@@ -329,7 +356,9 @@ class mail_ui
 					// update foldertree in main window
 					$parentFolder='INBOX';
 					$refreshData = array(
-						$profileId => lang($parentFolder)
+						$profileId => lang($parentFolder),
+						'subscribed' => $to_subscribe,
+						'unsubscribed' => $to_unsubscribe
 					);
 					$response = egw_json_response::get();
 					foreach($refreshData as $folder => &$name)
@@ -337,7 +366,9 @@ class mail_ui
 						$name = $this->getFolderTree(true, $folder, true, true, false);
 					}
 					// give success/error message to opener and popup itself
+					//$response->call('opener.app.mail.subscription_refresh',$refreshData);
 					$response->call('opener.app.mail.mail_reloadNode',$refreshData);
+
 					egw_framework::refresh_opener($msg, 'mail', null, null, null, null, null, $msg_type);
 					if ($button == 'apply')
 					{
@@ -353,7 +384,7 @@ class mail_ui
 		}
 
 		$preserv['profileId'] = $profileId;
-		$preserv['current_subscribed'] = $content['foldertree'];
+		
 		$readonlys = array();
 
 		$stmpl->exec('mail.mail_ui.subscription', $content,$sel_options,$readonlys,$preserv,2);

mail/js/app.js

@@ -44,6 +44,10 @@ app.classes.mail = AppJS.extend(
 		timeout: null,
 		request: null
 	},
+	/**
+	 * 
+	 */
+	subscription_treeLastState : "",
 	
 	/**
 	 * abbrevations for common access rights
@@ -277,6 +281,15 @@ app.classes.mail = AppJS.extend(
 					jQuery('input',to.node).focus();
 				}
 				break;
+			case 'mail.subscribe':
+				if (this.subscription_treeLastState != "")
+				{	
+					var tree = this.et2.getWidgetById('foldertree');
+					//Saved state of tree
+					var state = jQuery.parseJSON(this.subscription_treeLastState);
+					
+					tree.input.loadJSONObject(tree._htmlencode_node(state));
+				}
 		}
 	},
 
@@ -3655,6 +3668,28 @@ app.classes.mail = AppJS.extend(
 		this.egw.open_link('mail.mail_sieve.editVacation&acc_id='+acc_id,'_blank','700x480');
 	},
 	
+	subscription_refresh: function(_data)
+	{
+		console.log(_data);
+	},
+	
+	/**
+	 * Submit on apply button and save current tree state
+	 * 
+	 * @param {type} _egw
+	 * @param {type} _widget
+	 * @returns {undefined}
+	 */
+	subscription_apply: function (_egw, _widget)
+	{
+		var tree = etemplate2.getByApplication('mail')[0].widgetContainer.getWidgetById('foldertree');
+		if (tree)
+		{
+			tree.input._xfullXML = true;
+			this.subscription_treeLastState = tree.input.serializeTreeToJSON();
+		}
+		this.et2._inst.submit(_widget);
+	},
 	/**
 	 * Popup the subscription dialog
 	 *

mail/templates/default/subscribe.xet

@@ -13,14 +13,14 @@
 				</row>
 				<row>
 					<box scrolling="auto">
-						<tree id="foldertree" onclick="app.mail.subscribe_onclick"  multiple="true"/>
+						<tree id="foldertree" multiple="true" autoloading="mail_ui::ajax_tree_autoloading"/>
 					</box>
 				</row>
 			</rows>
 		</grid>
 		<hbox  class="dialogFooterToolbar">
 			<button statustext="Saves subscription changes" label="Save" id="button[save]"/>
-			<button statustext="Applies the changes made" label="Apply" id="button[apply]"/>
+			<button statustext="Applies the changes made" label="Apply" id="button[apply]" onclick="app.mail.subscription_apply"/>
 			<button label="Cancel" id="button[cancel]" onclick="window.close()"/>
 		</hbox>
 	</template>