SubdocumentScrollHelper(PanZoomController controller) {
mPanZoomController = controller;
// mUiHandler will be bound to the UI thread since that's where this constructor runs
mUiHandler = new Handler();
mPendingDisplacement = new PointF();
GeckoAppShell.registerGeckoEventListener(MESSAGE_PANNING_OVERRIDE, this);
GeckoAppShell.registerGeckoEventListener(MESSAGE_CANCEL_OVERRIDE, this);
GeckoAppShell.registerGeckoEventListener(MESSAGE_SCROLL_ACK, this);
}
/** Attaches the root layer to the layer controller so that Gecko appears. */
@Override
public void setLayerController(LayerController layerController) {
super.setLayerController(layerController);
layerController.setRoot(mTileLayer);
if (mGeckoViewport != null) {
layerController.setViewportMetrics(mGeckoViewport);
}
GeckoAppShell.registerGeckoEventListener("Viewport:UpdateAndDraw", this);
GeckoAppShell.registerGeckoEventListener("Viewport:UpdateLater", this);
GeckoAppShell.registerGeckoEventListener("Checkerboard:Toggle", this);
sendResizeEventIfNecessary();
}
