Merge "Hide split option if task is not dockable" into tm-qpr-dev

     * Does NOT add split options in the following scenarios:

     * * The taskView to add split options is already showing split screen tasks

     * * There aren't at least 2 tasks in overview to show split options for

     * * Split isn't supported by the task itself (non resizable activity)

     * * We aren't currently in multi-window

     * * The taskView to show split options for is the focused task AND we haven't started

     * scrolling in overview (if we haven't scrolled, there's a split overview action button so

     * we don't need this menu option)

        public List<SystemShortcut> getShortcuts(BaseDraggingActivity activity,

                TaskIdAttributeContainer taskContainer) {

            DeviceProfile deviceProfile = activity.getDeviceProfile();

            TaskView taskView = taskContainer.getTaskView();

            RecentsView recentsView = taskView.getRecentsView();

            PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();

            final Task task  = taskContainer.getTask();

            final TaskView taskView = taskContainer.getTaskView();

            final RecentsView recentsView = taskView.getRecentsView();

            final PagedOrientationHandler orientationHandler =

                    recentsView.getPagedOrientationHandler();

            int[] taskViewTaskIds = taskView.getTaskIds();

            boolean taskViewHasMultipleTasks = taskViewTaskIds[0] != -1 &&

                    taskViewTaskIds[1] != -1;

            boolean isFocusedTask = deviceProfile.isTablet && taskView.isFocusedTask();

            boolean isTaskInExpectedScrollPosition =

                    recentsView.isTaskInExpectedScrollPosition(recentsView.indexOfChild(taskView));

            if (taskViewHasMultipleTasks || notEnoughTasksToSplit

                    || (isFocusedTask && isTaskInExpectedScrollPosition)) {

            boolean isTaskSplitNotSupported = !task.isDockable;

            boolean hideForExistingMultiWindow = activity.getDeviceProfile().isMultiWindowMode;

            if (taskViewHasMultipleTasks ||

                    notEnoughTasksToSplit ||

                    isTaskSplitNotSupported ||

                    hideForExistingMultiWindow ||

                    (isFocusedTask && isTaskInExpectedScrollPosition)) {

                return null;

            }