Quicksand - make things work correctly with global drag and drop upload

Summary: Fixes T7685. This required making the global drag and drop behavior able to "uninstall" itself so to speak, and then it re-installs it self as necessary.

Test Plan:
Did the following all successfully

 - uploaded a file to homepage
 - homepage -> differential -- no way to upload via drag and drop
 - homepage -> differential -> homepage -- uploaded a file
 - homepage -> differential -> browser back button to homepage -- uploaded a file

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7685

Differential Revision: https://secure.phabricator.com/D12534

resources/celerity/map.php

@@ -8,10 +8,10 @@
 return array(
   'names' => array(
     'core.pkg.css' => '9a9b59ca',
-    'core.pkg.js' => '348d5193',
+    'core.pkg.js' => '493cc6e6',
     'darkconsole.pkg.js' => '8ab24e01',
     'differential.pkg.css' => '3500921f',
-    'differential.pkg.js' => 'c0506961',
+    'differential.pkg.js' => '890046d3',
     'diffusion.pkg.css' => '591664fa',
     'diffusion.pkg.js' => '0115b37c',
     'maniphest.pkg.css' => '68d4dd3d',
@@ -442,7 +442,7 @@ return array(
     'rsrc/js/application/uiexample/gesture-example.js' => '558829c2',
     'rsrc/js/application/uiexample/notification-example.js' => '8ce821c5',
     'rsrc/js/core/Busy.js' => '59a7976a',
-    'rsrc/js/core/DragAndDropFileUpload.js' => '7fa4b248',
+    'rsrc/js/core/DragAndDropFileUpload.js' => '07de8873',
     'rsrc/js/core/DraggableList.js' => 'a16ec1c6',
     'rsrc/js/core/FileUpload.js' => '477359c8',
     'rsrc/js/core/Hovercard.js' => '7e8468ae',
@@ -468,7 +468,7 @@ return array(
     'rsrc/js/core/behavior-file-tree.js' => '88236f00',
     'rsrc/js/core/behavior-form.js' => '5c54cbf3',
     'rsrc/js/core/behavior-gesture.js' => '3ab51e2c',
-    'rsrc/js/core/behavior-global-drag-and-drop.js' => 'bbdf75ca',
+    'rsrc/js/core/behavior-global-drag-and-drop.js' => '3f6075ff',
     'rsrc/js/core/behavior-high-security-warning.js' => '8fc1c918',
     'rsrc/js/core/behavior-history-install.js' => '7ee2b591',
     'rsrc/js/core/behavior-hovercard.js' => 'f36e01af',
@@ -593,7 +593,7 @@ return array(
     'javelin-behavior-durable-column' => '657c2b50',
     'javelin-behavior-error-log' => '6882e80a',
     'javelin-behavior-fancy-datepicker' => 'c51ae228',
-    'javelin-behavior-global-drag-and-drop' => 'bbdf75ca',
+    'javelin-behavior-global-drag-and-drop' => '3f6075ff',
     'javelin-behavior-herald-rule-editor' => '7ebaeed3',
     'javelin-behavior-high-security-warning' => '8fc1c918',
     'javelin-behavior-history-install' => '7ee2b591',
@@ -726,7 +726,7 @@ return array(
     'phabricator-core-css' => '76e8ee93',
     'phabricator-countdown-css' => '86b7b0a0',
     'phabricator-dashboard-css' => '17937d22',
-    'phabricator-drag-and-drop-file-upload' => '7fa4b248',
+    'phabricator-drag-and-drop-file-upload' => '07de8873',
     'phabricator-draggable-list' => 'a16ec1c6',
     'phabricator-fatal-config-template-css' => '8e6c6fcd',
     'phabricator-feed-css' => 'b513b5f4',
@@ -869,6 +869,14 @@ return array(
       'phabricator-shaped-request',
       'conpherence-thread-manager',
     ),
+    '07de8873' => array(
+      'javelin-install',
+      'javelin-util',
+      'javelin-request',
+      'javelin-dom',
+      'javelin-uri',
+      'phabricator-file-upload',
+    ),
     '08883e8b' => array(
       'javelin-behavior',
       'javelin-stratcom',
@@ -1080,6 +1088,13 @@ return array(
       'javelin-dom',
       'phortune-credit-card-form',
     ),
+    '3f6075ff' => array(
+      'javelin-behavior',
+      'javelin-dom',
+      'javelin-uri',
+      'javelin-mask',
+      'phabricator-drag-and-drop-file-upload',
+    ),
     '40a6a403' => array(
       'javelin-install',
       'javelin-dom',
@@ -1413,14 +1428,6 @@ return array(
       'javelin-behavior',
       'javelin-history',
     ),
-    '7fa4b248' => array(
-      'javelin-install',
-      'javelin-util',
-      'javelin-request',
-      'javelin-dom',
-      'javelin-uri',
-      'phabricator-file-upload',
-    ),
     82439934 => array(
       'javelin-behavior',
       'javelin-dom',
@@ -1722,13 +1729,6 @@ return array(
       'javelin-stratcom',
       'javelin-dom',
     ),
-    'bbdf75ca' => array(
-      'javelin-behavior',
-      'javelin-dom',
-      'javelin-uri',
-      'javelin-mask',
-      'phabricator-drag-and-drop-file-upload',
-    ),
     'bd4c8dca' => array(
       'javelin-install',
       'javelin-util',

src/applications/base/controller/PhabricatorController.php

@@ -57,6 +57,10 @@ abstract class PhabricatorController extends AphrontController {
     return false;
   }
 
+  public function isGlobalDragAndDropUploadEnabled() {
+    return false;
+  }
+
   public function willBeginExecution() {
     $request = $this->getRequest();
 

src/applications/files/controller/PhabricatorFileListController.php

@@ -2,19 +2,17 @@
 
 final class PhabricatorFileListController extends PhabricatorFileController {
 
-  private $key;
-
   public function shouldAllowPublic() {
     return true;
   }
 
-  public function willProcessRequest(array $data) {
-    $this->key = idx($data, 'key');
+  public function isGlobalDragAndDropUploadEnabled() {
+    return true;
   }
 
-  public function processRequest() {
+  public function handleRequest(AphrontRequest $request) {
     $controller = id(new PhabricatorApplicationSearchController())
-      ->setQueryKey($this->key)
+      ->setQueryKey($request->getURIData('key'))
       ->setSearchEngine(new PhabricatorFileSearchEngine())
       ->setNavigation($this->buildSideNavView());
 

src/applications/files/controller/PhabricatorFileUploadController.php

@@ -2,8 +2,11 @@
 
 final class PhabricatorFileUploadController extends PhabricatorFileController {
 
-  public function processRequest() {
-    $request = $this->getRequest();
+  public function isGlobalDragAndDropUploadEnabled() {
+    return true;
+  }
+
+  public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getUser();
 
     $file = PhabricatorFile::initializeNewFile();

src/applications/files/view/PhabricatorGlobalUploadTargetView.php

@@ -1,5 +1,16 @@
 <?php
 
+/**
+ * IMPORTANT: If you use this, make sure to implement
+ *
+ *   public function isGlobalDragAndDropUploadEnabled() {
+ *     return true;
+ *   }
+ *
+ * on the controller(s) that render this class...! This is necessary
+ * to make sure Quicksand works properly with the javascript in this
+ * UI.
+ */
 final class PhabricatorGlobalUploadTargetView extends AphrontView {
 
   private $showIfSupportedID;
@@ -19,7 +30,7 @@ final class PhabricatorGlobalUploadTargetView extends AphrontView {
       return null;
     }
 
-    $instructions_id = celerity_generate_unique_node_id();
+    $instructions_id = 'phabricator-global-drag-and-drop-upload-instructions';
 
     require_celerity_resource('global-drag-and-drop-css');
 

src/applications/home/controller/PhabricatorHomeMainController.php

@@ -2,19 +2,18 @@
 
 final class PhabricatorHomeMainController extends PhabricatorHomeController {
 
-  private $only;
   private $minipanels = array();
 
   public function shouldAllowPublic() {
     return true;
   }
 
-  public function willProcessRequest(array $data) {
-    $this->only = idx($data, 'only');
+  public function isGlobalDragAndDropUploadEnabled() {
+    return true;
   }
 
-  public function processRequest() {
-    $user = $this->getRequest()->getUser();
+  public function handleRequest(AphrontRequest $request) {
+    $user = $request->getUser();
 
     $dashboard = PhabricatorDashboardInstall::getDashboard(
       $user,
@@ -42,7 +41,7 @@ final class PhabricatorHomeMainController extends PhabricatorHomeController {
       $content = $this->buildMainResponse($projects);
     }
 
-    if (!$this->only) {
+    if (!$request->getURIData('only')) {
       $nav = $this->buildNav();
       $nav->appendChild(
         array(

src/view/page/PhabricatorStandardPageView.php

@@ -605,6 +605,7 @@ final class PhabricatorStandardPageView extends PhabricatorBarePageView {
 
   private function buildQuicksandConfig() {
     $viewer = $this->getRequest()->getUser();
+    $controller = $this->getController();
 
     $dropdown_query = id(new AphlictDropdownDataQuery())
       ->setViewer($viewer);
@@ -624,7 +625,7 @@ final class PhabricatorStandardPageView extends PhabricatorBarePageView {
       $rendered_dropdowns[$application_class] =
         $application->buildMainMenuExtraNodes(
           $viewer,
-          $this->getController());
+          $controller);
     }
 
     $console_config = null;
@@ -638,6 +639,7 @@ final class PhabricatorStandardPageView extends PhabricatorBarePageView {
         $dropdown_query->getNotificationData(),
         $dropdown_query->getConpherenceData(),
       ),
+      'globalDragAndDrop' => $controller->isGlobalDragAndDropUploadEnabled(),
       'aphlictDropdowns' => $rendered_dropdowns,
       'consoleConfig' => $console_config,
     ) + $this->buildAphlictListenConfigData();

webroot/rsrc/js/core/DragAndDropFileUpload.js

@@ -40,6 +40,17 @@ JX.install('PhabricatorDragAndDropFileUpload', {
   members : {
     _node : null,
     _depth : 0,
+    _isEnabled: false,
+
+    setIsEnabled: function(bool) {
+      this._isEnabled = bool;
+      return this;
+    },
+
+    getIsEnabled: function() {
+      return this._isEnabled;
+    },
+
     _updateDepth : function(delta) {
       if (this._depth === 0 && delta > 0) {
         this.invoke('didBeginDrag');
@@ -54,6 +65,7 @@ JX.install('PhabricatorDragAndDropFileUpload', {
 
     start : function() {
 
+
       // TODO: move this to JX.DOM.contains()?
       function contains(container, child) {
         do {
@@ -73,6 +85,9 @@ JX.install('PhabricatorDragAndDropFileUpload', {
         'click',
         null,
         JX.bind(this, function (e) {
+          if (!this.getIsEnabled()) {
+            return;
+          }
           if (this._depth) {
             e.kill();
             // Force depth to 0.
@@ -87,6 +102,10 @@ JX.install('PhabricatorDragAndDropFileUpload', {
         'dragenter',
         null,
         JX.bind(this, function(e) {
+          if (!this.getIsEnabled()) {
+            return;
+          }
+
           if (contains(this._node, e.getTarget())) {
             this._updateDepth(1);
           }
@@ -97,6 +116,10 @@ JX.install('PhabricatorDragAndDropFileUpload', {
         'dragleave',
         null,
         JX.bind(this, function(e) {
+          if (!this.getIsEnabled()) {
+            return;
+          }
+
           if (contains(this._node, e.getTarget())) {
             this._updateDepth(-1);
           }
@@ -106,18 +129,26 @@ JX.install('PhabricatorDragAndDropFileUpload', {
         this._node,
         'dragover',
         null,
-        function(e) {
+        JX.bind(this, function(e) {
+          if (!this.getIsEnabled()) {
+            return;
+          }
+
           // NOTE: We must set this, or Chrome refuses to drop files from the
           // download shelf.
           e.getRawEvent().dataTransfer.dropEffect = 'copy';
           e.kill();
-        });
+        }));
 
       JX.DOM.listen(
         this._node,
         'drop',
         null,
         JX.bind(this, function(e) {
+          if (!this.getIsEnabled()) {
+            return;
+          }
+
           e.kill();
 
           var files = e.getRawEvent().dataTransfer.files;
@@ -135,6 +166,10 @@ JX.install('PhabricatorDragAndDropFileUpload', {
           'paste',
           null,
           JX.bind(this, function(e) {
+            if (!this.getIsEnabled()) {
+              return;
+            }
+
             var clipboard = e.getRawEvent().clipboardData;
             if (!clipboard) {
               return;
@@ -168,6 +203,8 @@ JX.install('PhabricatorDragAndDropFileUpload', {
             }
           }));
       }
+
+      this.setIsEnabled(true);
     },
 
     _sendRequest : function(spec) {

webroot/rsrc/js/core/behavior-global-drag-and-drop.js

@@ -7,64 +7,102 @@
  *           phabricator-drag-and-drop-file-upload
  */
 
-JX.behavior('global-drag-and-drop', function(config) {
+JX.behavior('global-drag-and-drop', function(config, statics) {
   if (!JX.PhabricatorDragAndDropFileUpload.isSupported()) {
     return;
   }
 
-  var pending = 0;
-  var files = [];
-  var errors = false;
+  function init() {
+    statics.pending = 0;
+    statics.files = [];
+    statics.errors = false;
+    statics.enabled = true;
 
-  if (config.ifSupported) {
-    JX.$(config.ifSupported).style.display = '';
+    if (config.ifSupported) {
+      JX.$(config.ifSupported).style.display = '';
+    }
+
+    var page = JX.$('phabricator-standard-page');
+    statics.drop = new JX.PhabricatorDragAndDropFileUpload(page)
+      .setURI(config.uploadURI)
+      .setViewPolicy(config.viewPolicy)
+      .setChunkThreshold(config.chunkThreshold);
+
+    install_extra_listeners();
+
+    statics.drop.start();
+
+    return true;
   }
 
-  var page = JX.$('phabricator-standard-page');
-  var drop = new JX.PhabricatorDragAndDropFileUpload(page)
-    .setURI(config.uploadURI)
-    .setViewPolicy(config.viewPolicy)
-    .setChunkThreshold(config.chunkThreshold);
-
-  drop.listen('didBeginDrag', function() {
-    JX.Mask.show('global-upload-mask');
-    JX.DOM.show(JX.$(config.instructions));
-  });
-
-  drop.listen('didEndDrag', function() {
-    JX.Mask.hide('global-upload-mask');
-    JX.DOM.hide(JX.$(config.instructions));
-  });
-
-  drop.listen('willUpload', function() {
-    pending++;
-  });
-
-  drop.listen('didUpload', function(f) {
-    files.push(f);
-
-    pending--;
-    if (pending === 0 && !errors) {
-      // If whatever the user dropped in has finished uploading, send them to
-      // their uploads.
-      var uri;
-      uri = JX.$U(config.browseURI);
-      var ids = [];
-      for (var ii = 0; ii < files.length; ii++) {
-        ids.push(files[ii].getID());
+  function install_extra_listeners() {
+    statics.drop.listen('didBeginDrag', function() {
+      if (!statics.enabled) {
+        return;
       }
-      uri.setQueryParam('h', ids.join(','));
+      JX.Mask.show('global-upload-mask');
+      JX.DOM.show(JX.$(config.instructions));
+    });
 
-      files = [];
+    statics.drop.listen('didEndDrag', function() {
+      if (!statics.enabled) {
+        return;
+      }
+      JX.Mask.hide('global-upload-mask');
+      JX.DOM.hide(JX.$(config.instructions));
+    });
 
-      uri.go();
-    }
-  });
+    statics.drop.listen('willUpload', function() {
+      if (!statics.enabled) {
+        return;
+      }
+      statics.pending++;
+    });
 
-  drop.listen('didError', function() {
-    pending--;
-    errors = true;
-  });
+    statics.drop.listen('didUpload', function(f) {
+      if (!statics.enabled) {
+        return;
+      }
+      statics.files.push(f);
 
-  drop.start();
+      statics.pending--;
+      if (statics.pending === 0 && !statics.errors) {
+        // If whatever the user dropped in has finished uploading, send them to
+        // their uploads.
+        var uri;
+        uri = JX.$U(config.browseURI);
+        var ids = [];
+        for (var ii = 0; ii < statics.files.length; ii++) {
+          ids.push(statics.files[ii].getID());
+        }
+        uri.setQueryParam('h', ids.join(','));
+
+        statics.files = [];
+
+        uri.go();
+      }
+    });
+
+    statics.drop.listen('didError', function() {
+      if (!statics.enabled) {
+        return;
+      }
+      statics.pending--;
+      statics.errors = true;
+    });
+  }
+
+  statics.init = statics.init || init();
+
+  JX.Stratcom.listen(
+    'quicksand-redraw',
+    null,
+    function (e) {
+      e.kill();
+
+      var data = e.getData();
+      var toggle = data.newResponse.globalDragAndDrop;
+      statics.enabled = toggle;
+      statics.drop.setIsEnabled(toggle);
+    });
 });