Dragging files into external apps.

chrome/browser/resources/file_manager/js/file_manager.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Setting the src of an img to an empty string can crash the browser, so we
 // use an empty 1x1 gif instead.
 
 /**
  * FileManager constructor.
  *
@@ skipping 2175 matching lines @@
           // been summarized.  See the 'computeNextFile' logic below.
           pendingFiles.push(entry);
           continue;
         } else {
           selection.bytes += entry.cachedSize_;
         }
         // File object must be prepeared in advance for clipboard operations
         // (copy, paste and drag). Clipboard object closes for write after
         // returning control from that handlers so they may not have
         // asynchronous operations.
-        // TODO(serya): Put file objects into the clipboard.
         if (!this.isOnGData()) {
           entry.file(function(f) {
             selection.files.push(f);
           });
         }
       } else {
         selection.directoryCount += 1;
       }
     }
 
@@ skipping 922 matching lines @@
       else
         files += entry.fullPath + '\n';
     }
 
     clipboard.setData('fs/isCut', isCut.toString());
     clipboard.setData('fs/sourceDir',
                                   this.directoryModel_.currentEntry.fullPath);
     clipboard.setData('fs/sourceOnGData', this.isOnGData());
     clipboard.setData('fs/directories', directories);
     clipboard.setData('fs/files', files);
+
+    var files = this.selection.files;
+    for(var i = 0; i < files.length; i++) {
+      clipboard.items.add(files[i]);
+    }
   }
 
   FileManager.prototype.onCopy_ = function(event) {
     if (!this.selection || this.selection.totalCount == 0)
       return;
 
     event.preventDefault();
     this.cutOrCopyToClipboard_(event.clipboardData, false);
 
     this.blinkSelection();
   };
 
   FileManager.prototype.onCut_ = function(event) {
     if (!this.selection || this.selection.totalCount == 0 ||
         this.commands_['cut'].disabled)
       return;
 
     event.preventDefault();
     this.cutOrCopyToClipboard_(event.clipboardData, true);
 
     this.blinkSelection();
   };
 
   FileManager.prototype.onPaste_ = function(event) {
+    // Check that the data copied by ourselves.
+    if (!event.clipboardData.getData('fs/isCut'))
+      return;
     event.preventDefault();
     this.pasteFromClipboard_(event.clipboardData);
   };
 
   /**
    * Queue up a file copy operation based on the current system clipboard.
    */
   FileManager.prototype.pasteFromClipboard_ = function(clipboard) {
-    if (!event.clipboardData.getData('fs/isCut'))
-      return;
-
     var operationInfo = {
       isCut: clipboard.getData('fs/isCut'),
       sourceDir: clipboard.getData('fs/sourceDir'),
       sourceOnGData: clipboard.getData('fs/sourceOnGData'),
       directories: clipboard.getData('fs/directories'),
       files: clipboard.getData('fs/files')
     };
 
     // If both source and target are on GData, FileCopyManager uses
     // FileEntry.copyTo() / FileEntry.moveTo() to copy / move files.
@@ skipping 1158 matching lines @@
           });
       }, onError);
 
       function onError(err) {
         console.log('Error while checking free space: ' + err);
         setTimeout(doCheck, 1000 * 60);
       }
     }
   }
 })();