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#NVDAObjects/IAccessible/mozilla.py
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#A part of NonVisual Desktop Access (NVDA)
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#Copyright (C) 2006-2007 NVDA Contributors <http://www.nvda-project.org/>
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#This file is covered by the GNU General Public License.
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#See the file COPYING for more details.
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#Copyright (C) 2006-2010 Michael Curran <mick@kulgan.net>, James Teh <jamie@jantrid.net>
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import IAccessibleHandler
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from comtypes import IServiceProvider, COMError
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import controlTypes
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from . import IAccessible
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from . import IAccessible, Dialog
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from logHandler import log
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class Mozilla(IAccessible):
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return super(Mozilla,self).beTransparentToMouse
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def _get_parent(self):
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#Special code to support Mozilla node_child_of relation (for comboboxes)
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res=IAccessibleHandler.accNavigate(self.IAccessibleObject,self.IAccessibleChildID,IAccessibleHandler.NAVRELATION_NODE_CHILD_OF)
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if res and res!=(self.IAccessibleObject,self.IAccessibleChildID):
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#Gecko can sometimes give back a broken application node with a windowHandle of 0
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#The application node is annoying, even if it wasn't broken
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#So only use the node_child_of object if it has a valid IAccessible2 windowHandle
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windowHandle=res[0].windowHandle
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except (COMError,AttributeError):
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newObj=IAccessible(windowHandle=windowHandle,IAccessibleObject=res[0],IAccessibleChildID=res[1])
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return super(Mozilla,self).parent
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def _get_states(self):
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states = super(Mozilla, self).states
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if self.IAccessibleStates & oleacc.STATE_SYSTEM_MARQUEED:
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states.add(controlTypes.STATE_CHECKABLE)
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def _get_presentationType(self):
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presType=super(Mozilla,self).presentationType
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if presType==self.presType_content:
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if self.role==controlTypes.ROLE_TABLE and self.IA2Attributes.get('layout-guess')=='true':
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presType=self.presType_layout
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elif self.table and self.table.presentationType==self.presType_layout:
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presType=self.presType_layout
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def _get_positionInfo(self):
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info=super(Mozilla,self).positionInfo
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level=info.get('level',None)
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level=self.IA2Attributes.get('level',None)
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class Gecko1_9(Mozilla):
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def _get_description(self):
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rawDescription=super(Mozilla,self).description
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if isinstance(rawDescription,basestring) and rawDescription.startswith('Description: '):
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def _get_parent(self):
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#Special code to support Mozilla node_child_of relation (for comboboxes)
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res=IAccessibleHandler.accNavigate(self.IAccessibleObject,self.IAccessibleChildID,IAccessibleHandler.NAVRELATION_NODE_CHILD_OF)
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if res and res!=(self.IAccessibleObject,self.IAccessibleChildID):
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newObj=IAccessible(IAccessibleObject=res[0],IAccessibleChildID=res[1])
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return super(Mozilla,self).parent
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def event_scrollingStart(self):
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#Firefox 3.6 fires scrollingStart on leaf nodes which is not useful to us.
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#Bounce the event up to the node's parent so that any possible virtualBuffers will detect it.
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if self.role==controlTypes.ROLE_EDITABLETEXT and controlTypes.STATE_READONLY in self.states:
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eventHandler.queueEvent("scrollingStart",self.parent)
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def _get_states(self):
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states = super(Mozilla, self).states
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if self.IAccessibleStates & oleacc.STATE_SYSTEM_MARQUEED:
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states.add(controlTypes.STATE_CHECKABLE)
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class BrokenFocusedState(Mozilla):
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shouldAllowIAccessibleFocusEvent=True
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class RootApplication(Mozilla):
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"""Mozilla exposes a root application accessible as the parent of all top level frames.
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See MozillaBug:555861.
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This is non-standard; the top level accessible should be the top level window.
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NVDA expects the standard behaviour, so we never want to see this object.
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def __nonzero__(self):
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# As far as NVDA is concerned, this is a useless object.
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class Document(Mozilla):
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shouldAllowIAccessibleFocusEvent=True
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def _get_virtualBufferClass(self):
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def _get_treeInterceptorClass(self):
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states=self.states
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if isinstance(self.IAccessibleObject,IAccessibleHandler.IAccessible2) and controlTypes.STATE_READONLY in states and controlTypes.STATE_BUSY not in states and self.windowClassName=="MozillaContentWindowClass":
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ver=_getGeckoVersion(self)
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if (not ver or ver.startswith('1.9')) and self.windowClassName!="MozillaContentWindowClass":
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return super(Document,self).treeInterceptorClass
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if controlTypes.STATE_READONLY in states:
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import virtualBuffers.gecko_ia2
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return virtualBuffers.gecko_ia2.Gecko_ia2
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return super(Document,self).virtualBufferClass
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return super(Document,self).treeInterceptorClass
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class ListItem(Mozilla):
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shouldAllowIAccessibleFocusEvent=True
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def _get_name(self):
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name=super(ListItem,self)._get_name()
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if self.IAccessibleStates&oleacc.STATE_SYSTEM_READONLY:
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class ComboBox(Mozilla):
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shouldAllowIAccessibleFocusEvent=True
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shouldAllowIAccessibleFocusEvent=True
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shouldAllowIAccessibleFocusEvent=True
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shouldAllowIAccessibleFocusEvent=True
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class EmbeddedObject(Mozilla):
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def _get_shouldAllowIAccessibleFocusEvent(self):
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focusWindow = winUser.getGUIThreadInfo(self.windowThreadID).hwndFocus
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if self.windowHandle != focusWindow:
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# This window doesn't have the focus, which means the embedded object's window probably already has the focus.
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# We don't want to override the focus event fired by the embedded object.
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return super(EmbeddedObject, self).shouldAllowIAccessibleFocusEvent
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def _getGeckoVersion(obj):
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appMod = obj.appModule
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return appMod._geckoVersion
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except AttributeError:
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ver = obj.IAccessibleObject.QueryInterface(IServiceProvider).QueryService(IAccessibleHandler.IAccessibleApplication._iid_, IAccessibleHandler.IAccessibleApplication).toolkitVersion
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appMod._geckoVersion = ver
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class GeckoPluginWindowRoot(IAccessible):
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def _get_parent(self):
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parent=super(GeckoPluginWindowRoot,self).parent
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ver=_getGeckoVersion(parent)
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if ver and not ver.startswith('1.'):
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res=IAccessibleHandler.accNavigate(parent.IAccessibleObject,0,IAccessibleHandler.NAVRELATION_EMBEDS)
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obj=IAccessible(IAccessibleObject=res[0],IAccessibleChildID=res[1])
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if obj and controlTypes.STATE_OFFSCREEN not in obj.states:
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def findExtraOverlayClasses(obj, clsList):
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"""Determine the most appropriate class if this is a Mozilla object.
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This works similarly to L{NVDAObjects.NVDAObject.findOverlayClasses} except that it never calls any other findOverlayClasses method.
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if not isinstance(obj.IAccessibleObject, IAccessibleHandler.IAccessible2):
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# We require IAccessible2; i.e. Gecko >= 1.9.
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iaRole = obj.IAccessibleRole
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if iaRole == oleacc.ROLE_SYSTEM_APPLICATION:
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if not obj.IAccessibleObject.windowHandle:
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cls = RootApplication
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cls = _IAccessibleRolesToOverlayClasses.get(iaRole)
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if iaRole in _IAccessibleRolesWithBrokenFocusedState:
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clsList.append(BrokenFocusedState)
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ver = _getGeckoVersion(obj)
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if ver and ver.startswith("1.9"):
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clsList.append(Gecko1_9)
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clsList.append(Mozilla)
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#: Maps IAccessible roles to NVDAObject overlay classes.
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_IAccessibleRolesToOverlayClasses = {
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oleacc.ROLE_SYSTEM_ALERT: Dialog,
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oleacc.ROLE_SYSTEM_LISTITEM: ListItem,
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oleacc.ROLE_SYSTEM_DOCUMENT: Document,
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IAccessibleHandler.IA2_ROLE_EMBEDDED_OBJECT: EmbeddedObject,
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"embed": EmbeddedObject,
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"object": EmbeddedObject,
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#: Roles that mightn't set the focused state when they are focused.
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_IAccessibleRolesWithBrokenFocusedState = frozenset((
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oleacc.ROLE_SYSTEM_COMBOBOX,
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oleacc.ROLE_SYSTEM_LIST,
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oleacc.ROLE_SYSTEM_LISTITEM,
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oleacc.ROLE_SYSTEM_DOCUMENT,
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oleacc.ROLE_SYSTEM_APPLICATION,
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oleacc.ROLE_SYSTEM_TABLE,
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oleacc.ROLE_SYSTEM_OUTLINE,
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removed
source/NVDAObjects/IAccessible/mozilla.py
