diff --git a/db/zentao.sql b/db/zentao.sql
index 055668213d..f9f104ca7f 100644
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -1552,5 +1552,11 @@ INSERT INTO `zt_groupPriv` (`company`, `group`, `module`, `method`) VALUES
 (1, 2, 'todo', 'batchEdit'),
 (1, 3, 'todo', 'batchEdit'),
 (1, 4, 'todo', 'batchEdit'),
-(1, 5, 'todo', 'batchEdit');
+(1, 5, 'todo', 'batchEdit'),
+(1, 1, 'task', 'batchEdit'),
+(1, 2, 'task', 'batchEdit'),
+(1, 3, 'task', 'batchEdit'),
+(1, 4, 'task', 'batchEdit'),
+(1, 5, 'task', 'batchEdit');
+
 
diff --git a/module/common/lang/en.php b/module/common/lang/en.php
index bf9d60c427..b1ae18fa1a 100644
--- a/module/common/lang/en.php
+++ b/module/common/lang/en.php
@@ -294,6 +294,8 @@ $lang->zentaoDESC     = "ZenTaoPMS is an open sourced project management system.
 
 
 
+$lang->suhosinInfo = "Warming:data is too large! Please enlarge the setting of <font color=red>sohusin.post.max_vars</font> and <font color=red>sohusin.request.max_vars</font> in php.ini. Otherwise partial data can't be saved.";
+
 /* Date times. */
 define('DT_DATETIME1',  'Y-m-d H:i:s');
 define('DT_DATETIME2',  'y-m-d H:i');
diff --git a/module/common/lang/zh-cn.php b/module/common/lang/zh-cn.php
index d0db5636e8..d828d1209b 100644
--- a/module/common/lang/zh-cn.php
+++ b/module/common/lang/zh-cn.php
@@ -294,6 +294,8 @@ $lang->zentaoDESC     = "禅道项目管理软件(ZenTaoPMS)是一款国产的
     它集产品管理、项目管理、测试管理于一体，同时还包含了事务管理、组织管理等诸多功能，是中小型企业项目管理的首选。禅道项目管理软件使用PHP + MySQL开发，
 基于自主的PHP开发框架──ZenTaoPHP而成。第三方开发者或者企业可以非常方便的开发插件或者进行定制。禅道在手，项目无忧！"; 
 
+$lang->suhosinInfo = "警告：数据太多，请在php.ini中修改<font color=red>sohusin.post.max_vars</font>和<font color=red>sohusin.request.max_vars</font>（设置更大的数）。 保存并重新启动apache，否则会造成部分数据无法保存。";
+
 /* 时间格式设置。*/
 define('DT_DATETIME1',  'Y-m-d H:i:s');
 define('DT_DATETIME2',  'y-m-d H:i');
diff --git a/module/common/model.php b/module/common/model.php
index 37e0008e19..1ddc5fa394 100644
--- a/module/common/model.php
+++ b/module/common/model.php
@@ -364,4 +364,24 @@ class commonModel extends model
         ksort($diff);
         return implode("\n", $diff);
     }
+
+    /**
+     * Judge Suhosin Setting whether the actual size of post data is large than the setting size.
+     * 
+     * @param  int    $numberOfItems 
+     * @param  int    $columns 
+     * @access public
+     * @return void
+     */
+    public function judgeSuhosinSetting($numberOfItems, $columns)
+    {
+        if(extension_loaded('suhosin'))
+        {
+            $maxPostVars    = ini_get('suhosin.post.max_vars');
+            $maxRequestVars = ini_get('suhosin.request.max_vars');
+            if($numberOfItems * $columns > $maxPostVars or $numberOfItems * $columns > $maxRequestVars) return true;
+        }
+
+        return false;
+    }
 }
diff --git a/module/group/lang/resource.php b/module/group/lang/resource.php
index d8df2d4354..1f6d8c4af2 100644
--- a/module/group/lang/resource.php
+++ b/module/group/lang/resource.php
@@ -119,6 +119,7 @@ $lang->resource->project->ajaxGetProducts= 'ajaxGetProducts';
 /* Task. */
 $lang->resource->task->create              = 'create';
 $lang->resource->task->batchCreate         = 'batchCreate';
+$lang->resource->task->batchEdit           = 'batchEdit';
 $lang->resource->task->edit                = 'edit';
 $lang->resource->task->assignTo            = 'assign';
 $lang->resource->task->start               = 'start';
@@ -371,3 +372,4 @@ $lang->changelog['3.1'][] = 'todo-batchCreate';
 
 $lang->changelog['3.2'][] = 'my-changePassword';
 $lang->changelog['3.2'][] = 'todo-batchEdit';
+$lang->changelog['3.2'][] = 'task-batchEdit';
diff --git a/module/project/view/task.html.php b/module/project/view/task.html.php
index af390e5fbd..fe846f71fa 100644
--- a/module/project/view/task.html.php
+++ b/module/project/view/task.html.php
@@ -17,108 +17,118 @@
 var browseType = '<?php echo $browseType;?>';
 </script>
 <div id='querybox' class='<?php if($browseType !='bysearch') echo 'hidden';?>'><?php echo $searchForm;?></div>
-<table class='table-1 fixed colored tablesorter datatable'>
-  <?php $vars = "projectID=$project->id&status=$status&parma=$param&orderBy=%s&recTotal=$recTotal&recPerPage=$recPerPage"; ?>
-  <thead>
-  <tr class='colhead'>
-    <th class='w-id'>    <?php common::printOrderLink('id',        $orderBy, $vars, $lang->idAB);?></th>
-    <th class='w-pri'>   <?php common::printOrderLink('pri',       $orderBy, $vars, $lang->priAB);?></th>
-    <th class='w-p30'>   <?php common::printOrderLink('name',      $orderBy, $vars, $lang->task->name);?></th>
-    <th class='w-status'><?php common::printOrderLink('status',    $orderBy, $vars, $lang->statusAB);?></th>
-    <th class='w-70px'>  <?php common::printOrderLink('deadline',  $orderBy, $vars, $lang->task->deadlineAB);?></th>
+<form method='post' action='<?php echo $this->createLink('task', 'batchEdit', "projectID=$project->id&from=projectTask&status=$status&param=$param&orderBy=$orderBy");?>'>
+  <table class='table-1 fixed colored tablesorter datatable'>
+    <?php $vars = "projectID=$project->id&status=$status&parma=$param&orderBy=%s&recTotal=$recTotal&recPerPage=$recPerPage"; ?>
+    <thead>
+    <tr class='colhead'>
+      <th class='w-id'>    <?php common::printOrderLink('id',        $orderBy, $vars, $lang->idAB);?></th>
+      <th class='w-pri'>   <?php common::printOrderLink('pri',       $orderBy, $vars, $lang->priAB);?></th>
+      <th class='w-p30'>   <?php common::printOrderLink('name',      $orderBy, $vars, $lang->task->name);?></th>
+      <th class='w-status'><?php common::printOrderLink('status',    $orderBy, $vars, $lang->statusAB);?></th>
+      <th class='w-70px'>  <?php common::printOrderLink('deadline',  $orderBy, $vars, $lang->task->deadlineAB);?></th>
 
-    <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
-    <th class='w-id'>    <?php common::printOrderLink('openedDate',$orderBy, $vars, $lang->task->openedDateAB);?></th>
-    <?php endif;?>
+      <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
+      <th class='w-id'>    <?php common::printOrderLink('openedDate',$orderBy, $vars, $lang->task->openedDateAB);?></th>
+      <?php endif;?>
 
-    <th class='w-user'>  <?php common::printOrderLink('assignedTo',$orderBy, $vars, $lang->task->assignedToAB);?></th>
-    <th class='w-user'>  <?php common::printOrderLink('finishedBy',$orderBy, $vars, $lang->task->finishedByAB);?></th>
+      <th class='w-user'>  <?php common::printOrderLink('assignedTo',$orderBy, $vars, $lang->task->assignedToAB);?></th>
+      <th class='w-user'>  <?php common::printOrderLink('finishedBy',$orderBy, $vars, $lang->task->finishedByAB);?></th>
 
-    <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
-    <th class='w-40px'>  <?php common::printOrderLink('finishedDate',$orderBy, $vars, $lang->task->finishedDateAB);?></th>
-    <?php endif;?>
+      <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
+      <th class='w-40px'>  <?php common::printOrderLink('finishedDate',$orderBy, $vars, $lang->task->finishedDateAB);?></th>
+      <?php endif;?>
 
-    <th class='w-35px'>  <?php common::printOrderLink('estimate',  $orderBy, $vars, $lang->task->estimateAB);?></th>
-    <th class='w-40px'>  <?php common::printOrderLink('consumed',  $orderBy, $vars, $lang->task->consumedAB);?></th>
-    <th class='w-40px'>  <?php common::printOrderLink('left',      $orderBy, $vars, $lang->task->leftAB);?></th>
-    <th><?php common::printOrderLink('story', $orderBy, $vars, $lang->task->story);?></th>
-    <th class='w-100px {sorter:false}'><?php echo $lang->actions;?></th>
-  </tr>
-  </thead>
-  <?php  
-    $taskSum = $statusWait = $statusDone = $statusDoing = $statusClosed = $statusCancel = 0;  
-    $totalEstimate = $totalConsumed = $totalLeft = 0.0;
-  ?>
-  <tbody>
-  <?php foreach($tasks as $task):?>
-  <?php $class = $task->assignedTo == $app->user->account ? 'style=color:red' : '';?>
-  <?php  
-  $totalEstimate  += $task->estimate;
-  $totalConsumed  += $task->consumed;
-  $totalLeft      += (($task->status == 'cancel' or $task->closedReason == 'cancel') ? 0 : $task->left);
-  $statusVar      = 'status' . ucfirst($task->status);
-  $$statusVar ++;
-  ?>
-  <tr class='a-center'>
-    <td><?php if(!common::printLink('task', 'view', "task=$task->id", sprintf('%03d', $task->id))) printf('%03d', $task->id);?></td>
-    <td><?php echo $lang->task->priList[$task->pri];?></td>
-    <td class='a-left nobr'>
-      <?php 
-      if($task->fromBug != 0) echo "<span class='bug'>[BUG] </span>";
-      else echo "<span class='task'>[TASK] </span>";
-      if(!common::printLink('task', 'view', "task=$task->id", $task->name)) echo $task->name;
-      ?>
-    </td>
-    <td class=<?php echo $task->status;?> >
-      <?php
-      $storyChanged = ($task->storyStatus == 'active' and $task->latestStoryVersion > $task->storyVersion);
-      $storyChanged ? print("<span class='warning'>{$lang->story->changed}</span> ") : print($lang->task->statusList[$task->status]);
-      ?>
-    </td>
-    <td class=<?php if(isset($task->delay)) echo 'delayed';?>><?php if(substr($task->deadline, 0, 4) > 0) echo substr($task->deadline, 5, 6);?></td>
+      <th class='w-35px'>  <?php common::printOrderLink('estimate',  $orderBy, $vars, $lang->task->estimateAB);?></th>
+      <th class='w-40px'>  <?php common::printOrderLink('consumed',  $orderBy, $vars, $lang->task->consumedAB);?></th>
+      <th class='w-40px'>  <?php common::printOrderLink('left',      $orderBy, $vars, $lang->task->leftAB);?></th>
+      <th><?php common::printOrderLink('story', $orderBy, $vars, $lang->task->story);?></th>
+      <th class='w-100px {sorter:false}'><?php echo $lang->actions;?></th>
+    </tr>
+    </thead>
+    <?php  
+      $taskSum = $statusWait = $statusDone = $statusDoing = $statusClosed = $statusCancel = 0;  
+      $totalEstimate = $totalConsumed = $totalLeft = 0.0;
+    ?>
+    <tbody>
+    <?php foreach($tasks as $task):?>
+    <?php $class = $task->assignedTo == $app->user->account ? 'style=color:red' : '';?>
+    <?php  
+    $totalEstimate  += $task->estimate;
+    $totalConsumed  += $task->consumed;
+    $totalLeft      += (($task->status == 'cancel' or $task->closedReason == 'cancel') ? 0 : $task->left);
+    $statusVar      = 'status' . ucfirst($task->status);
+    $$statusVar ++;
+    ?>
+    <tr class='a-center'>
+      <td>
+        <input type='checkbox' name='taskIDList[]'  value='<?php echo $task->id;?>'/> 
+        <?php if(!common::printLink('task', 'view', "task=$task->id", sprintf('%03d', $task->id))) printf('%03d', $task->id);?>
+      </td>
+      <td><?php echo $lang->task->priList[$task->pri];?></td>
+      <td class='a-left nobr'>
+        <?php 
+        if($task->fromBug != 0) echo "<span class='bug'>[BUG] </span>";
+        else echo "<span class='task'>[TASK] </span>";
+        if(!common::printLink('task', 'view', "task=$task->id", $task->name)) echo $task->name;
+        ?>
+      </td>
+      <td class=<?php echo $task->status;?> >
+        <?php
+        $storyChanged = ($task->storyStatus == 'active' and $task->latestStoryVersion > $task->storyVersion);
+        $storyChanged ? print("<span class='warning'>{$lang->story->changed}</span> ") : print($lang->task->statusList[$task->status]);
+        ?>
+      </td>
+      <td class=<?php if(isset($task->delay)) echo 'delayed';?>><?php if(substr($task->deadline, 0, 4) > 0) echo substr($task->deadline, 5, 6);?></td>
 
 
-    <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
-    <td><?php echo substr($task->openedDate, 5, 6);?></th>
-    <?php endif;?>
+      <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
+      <td><?php echo substr($task->openedDate, 5, 6);?></th>
+      <?php endif;?>
 
-    <td <?php echo $class;?>><?php echo $task->assignedToRealName;?></td>
-    <td><?php echo $users[$task->finishedBy];?></td>
+      <td <?php echo $class;?>><?php echo $task->assignedToRealName;?></td>
+      <td><?php echo $users[$task->finishedBy];?></td>
 
-    <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
-    <td><?php echo substr($task->finishedDate, 5, 6);?></th>
-    <?php endif;?>
+      <?php if($this->cookie->windowWidth > $this->config->wideSize):?>
+      <td><?php echo substr($task->finishedDate, 5, 6);?></th>
+      <?php endif;?>
 
-    <td><?php echo $task->estimate;?></td>
-    <td><?php echo $task->consumed;?></td>
-    <td><?php echo $task->left;?></td>
-    <td class='a-left nobr'>
-      <?php 
-      $story = '';
-      if($task->storyID and common::hasPriv('story', 'view'))  $story = html::a($this->createLink('story', 'view', "storyid=$task->storyID"), $task->storyTitle);
-      if($task->storyID and !common::hasPriv('story', 'view')) $story = $task->storyTitle;
-      echo $story;
-      ?>
-    </td>
-    <td>
-      <?php
-      if(!(($task->status == 'wait'  or $task->status == 'doing')  and common::printLink('task', 'finish', "taskID=$task->id", $lang->task->buttonDone))) echo $lang->task->buttonDone . ' ';
-      if(!(($task->status == 'done'  or $task->status == 'cancel') and common::printLink('task', 'close', "taskID=$task->id", $lang->task->buttonClose))) echo $lang->task->buttonClose . ' ';
-      if(!common::printLink('task', 'edit',  "taskID=$task->id", $lang->task->buttonEdit)) echo $lang->task->buttonEdit . ' ';
-      if($browseType == 'needconfirm') common::printLink('task', 'confirmStoryChange', "taskid=$task->id", $lang->confirm, 'hiddenwin');
-      ?>
-    </td>
-  </tr>
-  <?php endforeach;?>
-  </tbody>
-  <tfoot>
-    <tr>
-      <?php $columns = $this->cookie->windowWidth > $this->config->wideSize ? 14 : 12;?>
-      <td colspan='<?php echo $columns;?>'>
-        <div class='f-left'><?php printf($lang->project->taskSummary, count($tasks), $statusWait, $statusDoing, $totalEstimate, $totalConsumed, $totalLeft);?></div>
-        <?php $pager->show();?>
-     </td>
-   </tr>
-  </tfoot>
-</table>
+      <td><?php echo $task->estimate;?></td>
+      <td><?php echo $task->consumed;?></td>
+      <td><?php echo $task->left;?></td>
+      <td class='a-left nobr'>
+        <?php 
+        $story = '';
+        if($task->storyID and common::hasPriv('story', 'view'))  $story = html::a($this->createLink('story', 'view', "storyid=$task->storyID"), $task->storyTitle);
+        if($task->storyID and !common::hasPriv('story', 'view')) $story = $task->storyTitle;
+        echo $story;
+        ?>
+      </td>
+      <td>
+        <?php
+        if(!(($task->status == 'wait'  or $task->status == 'doing')  and common::printLink('task', 'finish', "taskID=$task->id", $lang->task->buttonDone))) echo $lang->task->buttonDone . ' ';
+        if(!(($task->status == 'done'  or $task->status == 'cancel') and common::printLink('task', 'close', "taskID=$task->id", $lang->task->buttonClose))) echo $lang->task->buttonClose . ' ';
+        if(!common::printLink('task', 'edit',  "taskID=$task->id", $lang->task->buttonEdit)) echo $lang->task->buttonEdit . ' ';
+        if($browseType == 'needconfirm') common::printLink('task', 'confirmStoryChange', "taskid=$task->id", $lang->confirm, 'hiddenwin');
+        ?>
+      </td>
+    </tr>
+    <?php endforeach;?>
+    </tbody>
+    <tfoot>
+      <tr>
+        <?php $columns = $this->cookie->windowWidth > $this->config->wideSize ? 14 : 12;?>
+        <td colspan='<?php echo $columns;?>'>
+          <div class='f-left'>
+          <?php
+          if(common::hasPriv('task', 'batchEdit') and count($tasks))echo html::selectAll() . html::selectReverse() . html::submitButton($lang->task->batchEdit);
+          printf($lang->project->taskSummary, count($tasks), $statusWait, $statusDoing, $totalEstimate, $totalConsumed, $totalLeft);
+          ?>
+          </div>
+          <?php $pager->show();?>
+       </td>
+     </tr>
+    </tfoot>
+  </table>
+</form>
 <?php include '../../common/view/footer.html.php';?>
diff --git a/module/task/control.php b/module/task/control.php
index 95a502cd6b..87302499c3 100644
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -211,6 +211,129 @@ class task extends control
         $this->display();
     }
 
+    /**
+     * Batch edit task.
+     * 
+     * @param  int    $projectID 
+     * @param  string $from example:projectTask, taskBatchEdit
+     * @param  string $status 
+     * @param  int    $param 
+     * @param  string $orderBy 
+     * @access public
+     * @return void
+     */
+    public function batchEdit($projectID = 0, $from = '', $status = 'all', $param = 0, $orderBy = '')
+    {
+        /* Initialize vars. */
+        $browseType      = strtolower($status);
+        $queryID         = ($browseType == 'bysearch') ? (int)$param : 0;
+        $showSuhosinInfo = false;
+        $parentLink      = $this->session->taskList;
+        $project         = $this->project->getById($projectID); 
+        $allTasks        = array();
+        $editedTasks     = array();
+        $taskIDList      = array();
+        $columns         = 13;
+        if(!$orderBy) $orderBy = $this->cookie->projectTaskOrder ? $this->cookie->projectTaskOrder : 'status,id_desc';
+
+        /* Set project menu. */
+        $this->project->setMenu($this->project->getPairs(), $project->id);
+
+        /* Get all tasks. */
+        if($browseType != "bysearch")
+        {
+            $allTasks = $this->task->getProjectTasks($projectID, $status, $orderBy, null); 
+        }
+        else
+        {   
+            if($queryID)
+            {
+                $query = $this->loadModel('search')->getQuery($queryID);
+                if($query)
+                {
+                    $this->session->set('taskQuery', $query->sql);
+                    $this->session->set('taskForm', $query->form);
+                }
+                else
+                {
+                    $this->session->set('taskQuery', ' 1 = 1');
+                }
+            }
+            else
+            {
+                if($this->session->taskQuery == false) $this->session->set('taskQuery', ' 1 = 1');
+            }
+            $taskQuery = str_replace("`project` = 'all'", '1', $this->session->taskQuery); // Search all project.
+            $allTasks  = $this->project->getSearchTasks($taskQuery, null, $orderBy);
+        }
+
+        /* Get form data for project-task. */
+        if($from == 'projectTask')
+        {
+            if($this->post->taskIDList) 
+            {
+                $taskIDList = $this->post->taskIDList;
+            }
+            elseif(!isset($this->post->taskIDList) and $this->session->taskIDList)
+            {
+                $taskIDList = $this->session->taskIDList;
+            }
+
+            /* Initialize the tasks whose need to edited. */
+            foreach($allTasks as $task) if(in_array($task->id, $taskIDList)) $editedTasks[$task->id] = $task;
+
+            $showSuhosinInfo = $this->loadModel('common')->judgeSuhosinSetting(count($editedTasks), $columns);
+
+            /* Set the sessions. */
+            $this->app->session->set('taskIDList', $taskIDList);
+            $this->app->session->set('showSuhosinInfo', $showSuhosinInfo);
+        }
+        /* Get form data for task-batchEdit. */
+        elseif($from == 'taskBatchEdit')
+        {
+            $allChanges = $this->task->batchUpdate();
+
+            if(!empty($allChanges))
+            {
+                foreach($allChanges as $taskID => $changes)
+                {
+                    if(!empty($changes))
+                    {
+                        $actionID = $this->loadModel('action')->create('task', $taskID, 'Edited');
+                        $this->action->logHistory($actionID, $changes);
+                        $this->sendmail($taskID, $actionID);
+
+                        $task = $this->task->getById($taskID);
+                        if($task->fromBug != 0)
+                        {
+                            foreach($changes as $change)
+                            {
+                                if($change['field'] == 'status')
+                                {
+                                    $confirmURL = $this->createLink('bug', 'view', "id=$task->fromBug");
+                                    $cancelURL  = $this->server->HTTP_REFERER;
+                                    die(js::confirm(sprintf($this->lang->task->remindBug, $task->fromBug), $confirmURL, $cancelURL, 'parent', 'parent'));
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            die(js::locate($parentLink));
+        }
+
+        $this->view->header['title'] = $project->name . $this->lang->colon . $this->lang->task->batchEdit;
+        $this->view->position[] = $this->lang->task->batchEdit;
+
+        if($showSuhosinInfo) $this->view->suhosinInfo = $this->lang->suhosinInfo;
+        $this->view->projectID   = $project->id;
+        $this->view->editedTasks = $editedTasks;
+        $this->view->users       = $this->loadModel('user')->getPairs('noletter');
+        $this->view->members     = $this->project->getTeamMemberPairs($projectID, 'nodeleted');
+
+        $this->display();
+    }
+
     /**
      * Update assign of task 
      *
diff --git a/module/task/css/batchedit.css b/module/task/css/batchedit.css
new file mode 100755
index 0000000000..807ac72522
--- /dev/null
+++ b/module/task/css/batchedit.css
@@ -0,0 +1,2 @@
+.w-300px{width:300px}
+
diff --git a/module/task/lang/en.php b/module/task/lang/en.php
index ad7c7e8abb..c43911cd3f 100644
--- a/module/task/lang/en.php
+++ b/module/task/lang/en.php
@@ -12,6 +12,7 @@
 $lang->task->index              = "Index";
 $lang->task->create             = "Create";
 $lang->task->batchCreate        = "Batch create";
+$lang->task->batchEdit          = "Batch edit";
 $lang->task->import             = "Import undone";
 $lang->task->edit               = "Update";
 $lang->task->delete             = "Delete";
diff --git a/module/task/lang/zh-cn.php b/module/task/lang/zh-cn.php
index bf763047dc..c296573468 100644
--- a/module/task/lang/zh-cn.php
+++ b/module/task/lang/zh-cn.php
@@ -12,6 +12,7 @@
 $lang->task->index              = "任务一览";
 $lang->task->create             = "新增任务";
 $lang->task->batchCreate        = "批量添加";
+$lang->task->batchEdit          = "批量编辑";
 $lang->task->import             = "导入之前未完任务";
 $lang->task->edit               = "编辑任务";
 $lang->task->delete             = "删除任务";
diff --git a/module/task/model.php b/module/task/model.php
index 86dd3623ed..0d14fe2e3f 100644
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -204,6 +204,126 @@ class taskModel extends model
         if(!dao::isError()) return common::createChanges($oldTask, $task);
     }
 
+    /**
+     * Batch update task.
+     * 
+     * @param  array $taskIDList 
+     * @access public
+     * @return void
+     */
+    public function batchUpdate()
+    {
+        $tasks      = array();
+        $allChanges = array();
+        $now        = helper::now();
+        $taskIDList = $this->post->taskIDList ? $this->post->taskIDList : array();
+
+        /* Adjust whether the post data is complete, if not, remove the last element of $taskIDList. */
+        if($this->session->showSuhosinInfo) array_pop($taskIDList);
+
+        /* Initialize tasks from the post data.*/
+        if(!empty($taskIDList))
+        {
+            foreach($taskIDList as $taskID)
+            {
+                $oldTask = $this->getById($taskID);
+
+                $task->name           = $this->post->names[$taskID];
+                $task->assignedTo     = $this->post->assignedTos[$taskID];
+                $task->type           = $this->post->types[$taskID];
+                $task->status         = $this->post->statuses[$taskID];
+                $task->pri            = $this->post->pris[$taskID];
+                $task->estimate       = $this->post->estimates[$taskID];
+                $task->consumed       = $this->post->consumeds[$taskID];
+                $task->left           = $this->post->lefts[$taskID];
+                $task->finishedBy     = $this->post->finishedBys[$taskID];
+                $task->canceledBy     = $this->post->canceledBys[$taskID];
+                $task->closedBy       = $this->post->closedBys[$taskID];
+                $task->closedReason   = $this->post->closedReasons[$taskID];
+                $task->finishedDate   = "";
+                $task->canceledDate   = "";
+                $task->closedDate     = "";
+                $task->lastEditedBy   = $this->app->user->account;
+                $task->lastEditedDate = $now;
+                if(isset($this->post->assignedTos[$taskID])) 
+                {
+                    $task->assignedDate   = $this->post->assignedTos[$taskID] == $oldTask->assignedTo ? $oldTask->assignedDate : $now;
+                }
+
+                switch($task->status)
+                {
+                  case 'done':
+                  {
+                    $task->left = 0;
+                    if(!$task->finishedBy)   $task->finishedBy = $this->app->user->account;
+                    if(!$task->finishedDate) $task->finishedDate = $now;
+                  }break;
+                  case 'cancel':
+                  {
+                    $task->assignedTo   = $oldTask->openedBy;
+                    $task->assignedDate = $now;
+
+                    if(!$task->canceledBy)   $task->canceledBy   = $this->app->user->account;
+                    if(!$task->canceledDate) $task->canceledDate = $now;
+                  }break;
+                  case 'closed':
+                  {
+                    if(!$task->closedBy)   $task->closedBy   = $this->app->user->account;
+                    if(!$task->closedDate) $task->closedDate = $now;
+                  }break;
+                  case 'wait':
+                  {
+                    if($task->consumed > 0 and $task->left > 0) $task->status = 'doing';
+                    if($task->left == $oldTask->left and $task->consumed == 0) $task->left = $task->estimate;
+                  }
+                  default:break;
+                }
+                if($task->assignedTo) $task->assignedDate = $now;
+
+                $tasks[$taskID] = $task;
+                unset($task);
+            }
+
+            /* Update task data. */
+            foreach($tasks as $taskID => $task)
+            {
+                $oldTask = $this->getById($taskID);
+                $this->dao->update(TABLE_TASK)->data($task)
+                    ->autoCheck()
+                    ->batchCheckIF($task->status != 'cancel', $this->config->task->edit->requiredFields, 'notempty')
+
+                    ->checkIF($task->estimate != false, 'estimate', 'float')
+                    ->checkIF($task->consumed != false, 'consumed', 'float')
+                    ->checkIF($task->left     != false, 'left',     'float')
+                    ->checkIF($task->left == 0 and $task->status != 'cancel' and $task->status != 'closed' and $task->consumed != 0, 'status', 'equal', 'done')
+
+                    ->batchCheckIF($task->status == 'wait' or $task->status == 'doing', 'finishedBy, finishedDate,canceledBy, canceledDate, closedBy, closedDate, closedReason', 'empty')
+
+                    ->checkIF($task->status == 'done', 'consumed', 'notempty')
+                    ->checkIF($task->status == 'done' and $task->closedReason, 'closedReason', 'equal', 'done')
+                    ->batchCheckIF($task->status == 'done', 'canceledBy, canceledDate', 'empty')
+
+                    ->checkIF($task->status == 'closed', 'closedReason', 'notempty')
+                    ->batchCheckIF($task->closedReason == 'cancel', 'finishedBy, finishedDate', 'empty')
+                    ->where('id')->eq((int)$taskID)
+                    ->exec();
+
+                if($oldTask->story != false) $this->loadModel('story')->setStage($oldTask->story);
+                if(!dao::isError()) 
+                {
+                    $allChanges[$taskID] = common::createChanges($oldTask, $task);
+                }
+                else
+                {
+                    echo js::error(dao::getError());
+                    die(js::locate('back'));
+                }
+            }
+        }
+
+        return $allChanges;
+    }
+
     /**
      * Assign a task to a user again.
      * 
diff --git a/module/task/view/batchedit.html.php b/module/task/view/batchedit.html.php
new file mode 100755
index 0000000000..c600c89f53
--- /dev/null
+++ b/module/task/view/batchedit.html.php
@@ -0,0 +1,56 @@
+<?php
+/**
+ * The batch edit view of story module of ZenTaoPMS.
+ *
+ * @copyright   Copyright 2009-2012 青岛易软天创网络科技有限公司 (QingDao Nature Easy Soft Network Technology Co,LTD www.cnezsoft.com)
+ * @license     LGPL (http://www.gnu.org/licenses/lgpl.html)
+ * @author      Congzhi Chen <congzhi@cnezsoft.com>
+ * @package     task
+ * @version     $Id$
+ * @link        http://www.zentao.net
+ */
+?>
+<?php include '../../common/view/header.html.php';?>
+<form method='post' action="<?php echo $this->inLink('batchEdit', "projectID=$projectID&from=taskBatchEdit")?>">
+  <table class='table-1 fixed'> 
+    <caption><?php echo $lang->task->common . $lang->colon . $lang->task->batchEdit;?></caption>
+    <tr>
+      <th class='w-20px'><?php echo $lang->idAB;?></th> 
+      <th class='w-300px'> <?php echo $lang->task->name;?></th>
+      <th class='w-60px'><?php echo $lang->task->assignedTo;?></th>
+      <th class='w-40px'><?php echo $lang->typeAB;?></th>
+      <th class='w-45px'><?php echo $lang->task->status;?></th>
+      <th class='w-30px'><?php echo $lang->task->pri;?></th>
+      <th class='w-20px'><?php echo $lang->task->estimateAB;?></th>
+      <th class='w-20px'><?php echo $lang->task->consumedAB;?></th>
+      <th class='w-20px'><?php echo $lang->task->leftAB;?></th>
+      <th class='w-60px'><?php echo $lang->task->finishedBy;?></th>
+      <th class='w-60px'><?php echo $lang->task->canceledBy;?></th>
+      <th class='w-60px'><?php echo $lang->task->closedBy;?></th>
+      <th class='w-40px'><?php echo $lang->task->closedReason;?></th>
+    </tr>
+    <?php foreach($editedTasks as $task):?>
+    <tr class='a-center'>
+      <td><?php echo $task->id . html::hidden("taskIDList[$task->id]", $task->id);?></td>
+      <td><?php echo html::input("names[$task->id]",          $task->name, 'class=text-1'); echo "<span class='star'>*</span>";?></td>
+      <td><?php echo html::select("assignedTos[$task->id]",   $members, $task->assignedTo, 'class=select-1');?></td>
+      <td><?php echo html::select("types[$task->id]",         $lang->task->typeList, $task->type, 'class=select-1');?></td>
+      <td><?php echo html::select("statuses[$task->id]",      $lang->task->statusList, $task->status, 'class=select-1');?></td>
+      <td><?php echo html::select("pris[$task->id]",          (array)$lang->task->priList, $task->pri, 'class=select-1');?></td>
+      <td><?php echo html::input("estimates[$task->id]",      $task->estimate, 'class=text-1'); echo "<span class='star'>*</span>";?></td>
+      <td><?php echo html::input("consumeds[$task->id]",      $task->consumed, 'class=text-1'); echo "<span class='star'>*</span>";?></td>
+      <td><?php echo html::input("lefts[$task->id]",          $task->left, 'class=text-1'); echo "<span class='star'>*</span>";?></td>
+      <td><?php echo html::select("finishedBys[$task->id]",   $members, $task->finishedBy, 'class=select-1');?></td>
+      <td><?php echo html::select("canceledBys[$task->id]",   $members, $task->canceledBy, 'class=select-1');?></td>
+      <td><?php echo html::select("closedBys[$task->id]",     $members, $task->closedBy, 'class=select-1');?></td>
+      <td><?php echo html::select("closedReasons[$task->id]", $lang->task->reasonList, $task->closedReason, 'class=select-1');?></td>
+    </tr>  
+    <?php endforeach;?>
+    <?php if(isset($suhosinInfo)):?>
+    <tr><td colspan='13'><div class='f-left blue'><?php echo $suhosinInfo;?></div></td></tr>
+    <?php endif;?>
+    <tr><td colspan='13' class='a-center'><?php echo html::submitButton();?></td>
+   </tr>
+  </table>
+</form>
+<?php include '../../common/view/footer.html.php';?>
diff --git a/www/js/my.full.js b/www/js/my.full.js
index 996ee9b17f..444c572193 100644
--- a/www/js/my.full.js
+++ b/www/js/my.full.js
@@ -261,7 +261,7 @@ function switchProject(projectID, module, method)
     }
 
     /* Process task and build modules. */
-    if(module == 'task' && (method == 'view' || method == 'edit'))
+    if(module == 'task' && (method == 'view' || method == 'edit' || method == 'batchedit'))
     {
         module = 'project';
         method = 'task';