diff options
Diffstat (limited to 'background_scripts/main.coffee')
| -rw-r--r-- | background_scripts/main.coffee | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/background_scripts/main.coffee b/background_scripts/main.coffee index 829b0abb..cac35100 100644 --- a/background_scripts/main.coffee +++ b/background_scripts/main.coffee @@ -355,35 +355,45 @@ HintCoordinator = # If there's no handler here, then the message is forwarded to all frames in the sender's tab. @sendMessage request.messageType, tabId, request + # Post a link-hints message to a particular frame's port. We catch errors in case the frame has gone away. + postMessage: (tabId, frameId, messageType, port, request = {}) -> + try + port.postMessage extend request, {handler: "linkHintsMessage", messageType} + catch + @unregisterFrame tabId, frameId + + # Post a link-hints message to all participating frames. sendMessage: (messageType, tabId, request = {}) -> - extend request, {handler: "linkHintsMessage", messageType} for own frameId, port of @tabState[tabId].ports - try - port.postMessage request - catch - @unregisterFrame tabId, parseInt frameId + @postMessage tabId, parseInt(frameId), messageType, port, request prepareToActivateMode: (tabId, originatingFrameId, {modeIndex}) -> - @tabState[tabId] = {frameIds: frameIdsForTab[tabId][..], hintDescriptors: [], originatingFrameId, modeIndex} + @tabState[tabId] = {frameIds: frameIdsForTab[tabId][..], hintDescriptors: {}, originatingFrameId, modeIndex} @tabState[tabId].ports = extend {}, portsForTab[tabId] @sendMessage "getHintDescriptors", tabId, {modeIndex} # Receive hint descriptors from all frames and activate link-hints mode when we have them all. postHintDescriptors: (tabId, frameId, {hintDescriptors}) -> if frameId in @tabState[tabId].frameIds - @tabState[tabId].hintDescriptors.push hintDescriptors... + @tabState[tabId].hintDescriptors[frameId] = hintDescriptors @tabState[tabId].frameIds = @tabState[tabId].frameIds.filter (fId) -> fId != frameId if @tabState[tabId].frameIds.length == 0 - @sendMessage "activateMode", tabId, - originatingFrameId: @tabState[tabId].originatingFrameId - hintDescriptors: @tabState[tabId].hintDescriptors - modeIndex: @tabState[tabId].modeIndex + for own frameId, port of @tabState[tabId].ports + if frameId of @tabState[tabId].hintDescriptors + hintDescriptors = extend {}, @tabState[tabId].hintDescriptors + # We do not send back the frame's own hint descriptors. This is faster (approx. speedup 3/2) for + # link-busy sites like reddit. + delete hintDescriptors[frameId] + @postMessage tabId, parseInt(frameId), "activateMode", port, + originatingFrameId: @tabState[tabId].originatingFrameId + hintDescriptors: hintDescriptors + modeIndex: @tabState[tabId].modeIndex # If an unregistering frame is participating in link-hints mode, then we need to tidy up after it. unregisterFrame: (tabId, frameId) -> delete @tabState[tabId]?.ports?[frameId] - # We fake "postHintDescriptors" for an unregistering frame, if necessary. - @postHintDescriptors tabId, frameId, hintDescriptors: [] if @tabState[tabId]?.frameIds + # We fake "postHintDescriptors" for an unregistering frame. + @postHintDescriptors tabId, frameId, hintDescriptors: [] # Port handler mapping portHandlers = |