| Revisión | 75e727b0dac0081a358a20e029935d726c11b22a (tree) |
|---|---|
| Tiempo | 2014-02-23 13:45:00 |
| Autor |  Takuya Nishimoto <nishimotz@gmai...> |
| Commiter | Takuya Nishimoto |
merged origin t3800
source/_UIAHandler.py (diff)| @@ -118,6 +118,55 @@ UIAEventIdsToNVDAEventNames={ | ||
| 118 | 118 | #UIA_ToolTipClosedEventId:"hide", |
| 119 | 119 | } |
| 120 | 120 | |
| 121 | +class MsaaProxyFactory(COMObject): | |
| 122 | + """Overrides the default MSAA proxy so it only handles windows for which NVDA uses UIA. | |
| 123 | + Generally, the MSAA proxy isn't needed, as NVDA uses MSAA directly, | |
| 124 | + so UIA proxying is redundant. | |
| 125 | + However, some native UIA implementations depend on the MSAA proxy. | |
| 126 | + """ | |
| 127 | + _com_interfaces_ = [IUIAutomationProxyFactoryEntry, IUIAutomationProxyFactory] | |
| 128 | + | |
| 129 | + def __init__(self, baseEntry): | |
| 130 | + self.baseEntry = baseEntry | |
| 131 | + self.baseFactory = baseEntry.ProxyFactory | |
| 132 | + super(MsaaProxyFactory, self).__init__() | |
| 133 | + self.factory = self.QueryInterface(IUIAutomationProxyFactory) | |
| 134 | + | |
| 135 | + # Forward most methods. | |
| 136 | + def IUIAutomationProxyFactoryEntry__get_AllowSubstringMatch(self): | |
| 137 | + return self.baseEntry.AllowSubstringMatch | |
| 138 | + def IUIAutomationProxyFactoryEntry__get_CanCheckBaseClass(self): | |
| 139 | + return self.baseEntry.CanCheckBaseClass | |
| 140 | + def IUIAutomationProxyFactoryEntry__get_ClassName(self): | |
| 141 | + return self.baseEntry.ClassName | |
| 142 | + def IUIAutomationProxyFactoryEntry__get_ImageName(self): | |
| 143 | + return self.baseEntry.ImageName | |
| 144 | + def IUIAutomationProxyFactoryEntry__get_NeedsAdviseEvents(self): | |
| 145 | + return self.baseEntry.NeedsAdviseEvents | |
| 146 | + | |
| 147 | + def IUIAutomationProxyFactoryEntry_GetWinEventsForAutomationEvent(self, eventId, propertyId): | |
| 148 | + try: | |
| 149 | + return self.baseEntry.GetWinEventsForAutomationEvent(eventId, propertyId) | |
| 150 | + except IndexError: | |
| 151 | + # comtypes can't seem to handle a NULL safearray pointer. | |
| 152 | + return () | |
| 153 | + | |
| 154 | + def IUIAutomationProxyFactoryEntry__get_ProxyFactory(self): | |
| 155 | + return self.factory | |
| 156 | + | |
| 157 | + def IUIAutomationProxyFactory__get_ProxyFactoryId(self): | |
| 158 | + return u"NVDA: MSAA Proxy" | |
| 159 | + | |
| 160 | + def IUIAutomationProxyFactory_CreateProvider(self, hwnd, idObject, idChild): | |
| 161 | + from UIAHandler import handler | |
| 162 | + if not handler: | |
| 163 | + # Still initialising. | |
| 164 | + return None | |
| 165 | + if not handler.isUIAWindow(hwnd): | |
| 166 | + # NVDA won't use UIA for this window at all, so don't proxy for it. | |
| 167 | + return None | |
| 168 | + return self.baseFactory.CreateProvider(hwnd, idObject, idChild) | |
| 169 | + | |
| 121 | 170 | class UIAHandler(COMObject): |
| 122 | 171 | _com_interfaces_=[IUIAutomationEventHandler,IUIAutomationFocusChangedEventHandler,IUIAutomationPropertyChangedEventHandler] |
| 123 | 172 |
| @@ -142,10 +191,27 @@ class UIAHandler(COMObject): | ||
| 142 | 191 | windll.kernel32.CloseHandle(MTAThreadHandle) |
| 143 | 192 | del self.MTAThread |
| 144 | 193 | |
| 194 | + def setUIAProxies(self): | |
| 195 | + neededProxyIDs={'Microsoft: TreeView Proxy'} | |
| 196 | + mapping=self.clientObject.proxyFactoryMapping | |
| 197 | + msaaEntry = None | |
| 198 | + for index in reversed(xrange(mapping.count)): | |
| 199 | + entry=mapping.getEntry(index) | |
| 200 | + pfId = entry.proxyFactory.proxyFactoryId | |
| 201 | + if pfId=="Microsoft: MSAA Proxy": | |
| 202 | + msaaEntry = entry | |
| 203 | + if pfId not in neededProxyIDs: | |
| 204 | + mapping.removeEntry(index) | |
| 205 | + | |
| 206 | + if not msaaEntry: | |
| 207 | + return | |
| 208 | + mapping.InsertEntry(mapping.Count, MsaaProxyFactory(msaaEntry)) | |
| 209 | + | |
| 145 | 210 | def MTAThreadFunc(self): |
| 146 | 211 | try: |
| 147 | 212 | oledll.ole32.CoInitializeEx(None,comtypes.COINIT_MULTITHREADED) |
| 148 | 213 | self.clientObject=CoCreateInstance(CUIAutomation._reg_clsid_,interface=IUIAutomation,clsctx=CLSCTX_INPROC_SERVER) |
| 214 | + self.setUIAProxies() | |
| 149 | 215 | self.windowTreeWalker=self.clientObject.createTreeWalker(self.clientObject.CreateNotCondition(self.clientObject.CreatePropertyCondition(UIA_NativeWindowHandlePropertyId,0))) |
| 150 | 216 | self.windowCacheRequest=self.clientObject.CreateCacheRequest() |
| 151 | 217 | self.windowCacheRequest.AddProperty(UIA_NativeWindowHandlePropertyId) |
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