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+# Copyright (C) 2007, One Laptop Per Child
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+import os.path
+import tempfile
+
+from xpcom.nsError import *
+from xpcom import COMException
+from xpcom import components
+from xpcom.components import interfaces
+
+from documentnode import DocumentNode
+
+class UriListDataProvider:
+ _com_interfaces_ = interfaces.nsIFlavorDataProvider
+
+ def __init__(self, doc_node):
+ self._doc_node = doc_node
+
+ def getFlavorData(self, transferable, flavor):
+ if flavor != 'text/uri-list':
+ raise COMException(NS_ERROR_NOT_IMPLEMENTED)
+
+ mime_type = self._doc_node.get_image_mime_type()
+ image_name = self._doc_node.get_image_name()
+ image_name, file_ext = os.path.splitext(image_name)
+
+ if file_ext:
+ file_ext = file_ext[1:]
+
+ cls = components.classes['@mozilla.org/mime;1']
+ mime_service = cls.getService(interfaces.nsIMIMEService)
+ file_ext = mime_service.getPrimaryExtension(mime_type, file_ext)
+
+ f, file_path = tempfile.mkstemp(image_name + '.' + file_ext)
+ del f
+
+ self._doc_node.save_image(file_path)
+
+ cls = components.classes['@mozilla.org/supports-string;1']
+ string_supports = cls.createInstance(interfaces.nsISupportsString)
+ string_supports.data = 'file://' + file_path
+
+ return string_supports, 32
+
+class DragDropHooks:
+ _com_interfaces_ = interfaces.nsIClipboardDragDropHooks
+
+ def __init__(self, browser):
+ self._browser = browser
+
+ def allowDrop(self, event, session):
+ raise COMException(NS_ERROR_NOT_IMPLEMENTED)
+
+ def allowStartDrag(self, event):
+ raise COMException(NS_ERROR_NOT_IMPLEMENTED)
+
+ def onPasteOrDrop(self, event, trans):
+ return False
+
+ def onCopyOrDrag(self, event, trans):
+ mouse_event = event.queryInterface(interfaces.nsIDOMMouseEvent)
+ event_target = mouse_event.target
+ target_node = event_target.queryInterface(interfaces.nsIDOMNode)
+ document_node = DocumentNode(target_node, self._browser.web_navigation)
+
+ if document_node.is_image():
+ trans.removeDataFlavor('text/x-moz-url')
+ trans.addDataFlavor('text/uri-list')
+
+ data_provider = UriListDataProvider(document_node)
+ trans.setTransferData('text/uri-list', data_provider, 0)
+
+ return True
+