1 files changed, 64 insertions, 0 deletions
diff --git a/toolkit/content/nsClipboard.js b/toolkit/content/nsClipboard.js
new file mode 100644
index 0000000000..d9f7c45897
--- /dev/null
+++ b/toolkit/content/nsClipboard.js
@@ -0,0 +1,64 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * nsClipboard - wrapper around nsIClipboard and nsITransferable
+ *               that simplifies access to the clipboard.
+ **/
+var nsClipboard = {
+  _CB: null,
+  get mClipboard()
+    {
+      if (!this._CB)
+        {
+          const kCBContractID = "@mozilla.org/widget/clipboard;1";
+          const kCBIID = Components.interfaces.nsIClipboard;
+          this._CB = Components.classes[kCBContractID].getService(kCBIID);
+        }
+      return this._CB;
+    },
+
+  currentClipboard: null,
+  /**
+   * Array/Object read (Object aFlavourList, long aClipboard, Bool aAnyFlag) ;
+   *
+   * returns the data in the clipboard
+   *
+   * @param FlavourSet aFlavourSet
+   *        formatted list of desired flavours
+   * @param long aClipboard
+   *        the clipboard to read data from (kSelectionClipboard/kGlobalClipboard)
+   * @param Bool aAnyFlag
+   *        should be false.
+   **/
+  read: function (aFlavourList, aClipboard, aAnyFlag)
+    {
+      this.currentClipboard = aClipboard;
+      var data = nsTransferable.get(aFlavourList, this.getClipboardTransferable, aAnyFlag);
+      return data.first.first;  // only support one item
+    },
+
+  /**
+   * nsISupportsArray getClipboardTransferable (Object aFlavourList) ;
+   *
+   * returns a nsISupportsArray of the item on the clipboard
+   *
+   * @param Object aFlavourList
+   *        formatted list of desired flavours.
+   **/
+  getClipboardTransferable: function (aFlavourList)
+    {
+      const supportsContractID = "@mozilla.org/supports-array;1";
+      const supportsIID = Components.interfaces.nsISupportsArray;
+      var supportsArray = Components.classes[supportsContractID].createInstance(supportsIID);
+      var trans = nsTransferable.createTransferable();
+      for (var flavour in aFlavourList)
+        trans.addDataFlavor(flavour);
+      nsClipboard.mClipboard.getData(trans, nsClipboard.currentClipboard)
+      supportsArray.AppendElement(trans);
+      return supportsArray;
+    }
+};
+