Example usage for android.view.accessibility AccessibilityWindowInfo TYPE_SYSTEM

Introduction

In this page you can find the example usage for android.view.accessibility AccessibilityWindowInfo TYPE_SYSTEM.

Prototype

int TYPE_SYSTEM

To view the source code for android.view.accessibility AccessibilityWindowInfo TYPE_SYSTEM.

Click Source Link

Document

Window type: This is an system window.

Usage

From source file:com.android.talkback.formatter.TouchExplorationFormatter.java

/**
 * Resets cached scrollable state when touch exploration after window state
 * changes./*from   ww w .j a  v  a2  s. c o m*/
 */
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
    switch (event.getEventType()) {
    case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:
        // Reset cached scrollable state.
        mLastNodeWasScrollable = false;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // Store window title in the map.
            List<CharSequence> titles = event.getText();
            if (titles.size() > 0) {
                AccessibilityNodeInfo node = event.getSource();
                if (node != null) {
                    int windowType = getWindowType(node);
                    if (windowType == AccessibilityWindowInfo.TYPE_APPLICATION
                            || windowType == AccessibilityWindowInfo.TYPE_SYSTEM) {
                        mWindowTitlesMap.put(node.getWindowId(), titles.get(0));
                    }
                    node.recycle();
                }
            }
        }
        break;
    case AccessibilityEvent.TYPE_WINDOWS_CHANGED:
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // Copy key set not to modify original map.
            HashSet<Integer> windowIdsToBeRemoved = new HashSet<Integer>();
            windowIdsToBeRemoved.addAll(mWindowTitlesMap.keySet());

            // Enumerate window ids to be removed.
            List<AccessibilityWindowInfo> windows = mService.getWindows();
            for (AccessibilityWindowInfo window : windows) {
                windowIdsToBeRemoved.remove(window.getId());
            }

            // Delete titles of non-existing window ids.
            for (Integer windowId : windowIdsToBeRemoved) {
                mWindowTitlesMap.remove(windowId);
            }
        }
        break;
    }
}

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From source file:com.android.utils.WindowManager.java

public boolean isStatusBar(int windowId) {
    if (mWindows == null || mWindows.size() == 0) {
        return false;
    }/*from   w ww  .j  a  v  a  2 s.com*/

    return mWindows.get(0).getId() == windowId
            && mWindows.get(0).getType() == AccessibilityWindowInfo.TYPE_SYSTEM;
}

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From source file:com.android.utils.WindowManager.java

public boolean isNavigationBar(int windowId) {
    if (mWindows == null || mWindows.size() < 2) {
        return false;
    }//from  www . ja v  a  2  s.c o m

    int lastIndex = mWindows.size() - 1;
    return mWindows.get(lastIndex).getId() == windowId
            && mWindows.get(lastIndex).getType() == AccessibilityWindowInfo.TYPE_SYSTEM;
}

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From source file:com.android.talkback.eventprocessor.ProcessorScreen.java

private void updateWindowTitlesMap(AccessibilityEvent event) {
    switch (event.getEventType()) {
    case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED: {
        // If split screen mode is NOT available, we only need to care single window.
        if (!mIsSplitScreenModeAvailable) {
            mWindowTitlesMap.clear();//from   www . ja  v  a  2  s .  co m
        }

        int windowId = getWindowId(event);
        boolean shouldAnnounceEvent = shouldAnnounceEvent(event, windowId);
        CharSequence title = getWindowTitleFromEvent(event, shouldAnnounceEvent /* useContentDescription */);
        if (title != null) {
            if (shouldAnnounceEvent) {
                // When software keyboard is shown or hidden, TYPE_WINDOW_STATE_CHANGED
                // is dispatched with text describing the visibility of the keyboard.
                speakWithFeedback(title);
            } else {
                mWindowTitlesMap.put(windowId, title);

                if (getWindowType(event) == AccessibilityWindowInfo.TYPE_SYSTEM) {
                    mSystemWindowIdsSet.add(windowId);
                }

                CharSequence eventWindowClassName = event.getClassName();
                mWindowToClassName.put(windowId, eventWindowClassName);
                mWindowToPackageName.put(windowId, event.getPackageName());
            }
        }
    }
        break;
    case AccessibilityEvent.TYPE_WINDOWS_CHANGED: {
        HashSet<Integer> windowIdsToBeRemoved = new HashSet<Integer>(mWindowTitlesMap.keySet());
        List<AccessibilityWindowInfo> windows = mService.getWindows();
        for (AccessibilityWindowInfo window : windows) {
            windowIdsToBeRemoved.remove(window.getId());
        }
        for (Integer windowId : windowIdsToBeRemoved) {
            mWindowTitlesMap.remove(windowId);
            mSystemWindowIdsSet.remove(windowId);
            mWindowToClassName.remove(windowId);
            mWindowToPackageName.remove(windowId);
        }
    }
        break;
    }
}

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From source file:com.android.talkback.eventprocessor.ProcessorScreen.java

private void updateScreenState(AccessibilityEvent event) {
    switch (event.getEventType()) {
    case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:
        // Do nothing if split screen mode is available since it can be covered by
        // TYPE_WINDOWS_CHANGED events.
        if (mIsSplitScreenModeAvailable) {
            return;
        }//from  www.j av  a 2  s . co m

        mWindowIdA = getWindowId(event);
        break;
    case AccessibilityEvent.TYPE_WINDOWS_CHANGED:
        // Do nothing if split screen mode is NOT available since it can be covered by
        // TYPE_WINDOW_STATE_CHANGED events.
        if (!mIsSplitScreenModeAvailable) {
            return;
        }

        ArrayList<AccessibilityWindowInfo> applicationWindows = new ArrayList<>();
        ArrayList<AccessibilityWindowInfo> systemWindows = new ArrayList<>();
        ArrayList<AccessibilityWindowInfo> accessibilityOverlayWindows = new ArrayList<>();
        List<AccessibilityWindowInfo> windows = mService.getWindows();

        // If there are no windows available, clear the cached IDs.
        if (windows.isEmpty()) {
            mAccessibilityOverlayWindowId = WINDOW_ID_NONE;
            mWindowIdA = WINDOW_ID_NONE;
            mWindowIdB = WINDOW_ID_NONE;
            return;
        }

        for (int i = 0; i < windows.size(); i++) {
            AccessibilityWindowInfo window = windows.get(i);
            switch (window.getType()) {
            case AccessibilityWindowInfo.TYPE_APPLICATION:
                if (window.getParent() == null) {
                    applicationWindows.add(window);
                }
                break;
            case AccessibilityWindowInfo.TYPE_SYSTEM:
                systemWindows.add(window);
                break;
            case AccessibilityWindowInfo.TYPE_ACCESSIBILITY_OVERLAY:
                accessibilityOverlayWindows.add(window);
                break;
            }
        }

        if (accessibilityOverlayWindows.size() == windows.size()) {
            // TODO: investigate whether there is a case where we have more than one
            // accessibility overlay, and add a logic for it if there is.
            mAccessibilityOverlayWindowId = accessibilityOverlayWindows.get(0).getId();
            return;
        }

        mAccessibilityOverlayWindowId = WINDOW_ID_NONE;

        if (applicationWindows.size() == 0) {
            mWindowIdA = WINDOW_ID_NONE;
            mWindowIdB = WINDOW_ID_NONE;

            // If there is no application window but a system window, consider it as a
            // current window. This logic handles notification shade and lock screen.
            if (systemWindows.size() > 0) {
                Collections.sort(systemWindows,
                        new WindowManager.WindowPositionComparator(mService.isScreenLayoutRTL()));

                mWindowIdA = systemWindows.get(0).getId();
            }
        } else if (applicationWindows.size() == 1) {
            mWindowIdA = applicationWindows.get(0).getId();
            mWindowIdB = WINDOW_ID_NONE;
        } else if (applicationWindows.size() == 2) {
            Collections.sort(applicationWindows,
                    new WindowManager.WindowPositionComparator(mService.isScreenLayoutRTL()));

            mWindowIdA = applicationWindows.get(0).getId();
            mWindowIdB = applicationWindows.get(1).getId();
        } else {
            // If there are more than 2 windows, report the active window as the current
            // window.
            for (AccessibilityWindowInfo applicationWindow : applicationWindows) {
                if (applicationWindow.isActive()) {
                    mWindowIdA = applicationWindow.getId();
                    mWindowIdB = WINDOW_ID_NONE;
                    return;
                }
            }
        }
        break;
    }
}

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From source file:com.android.talkback.eventprocessor.ProcessorScreen.java

private boolean isSystemWindow(int windowId) {
    if (mSystemWindowIdsSet.contains(windowId)) {
        return true;
    }/*from w  ww.  j av  a2s .c om*/

    if (!mIsSplitScreenModeAvailable) {
        return false;
    }

    for (AccessibilityWindowInfo window : mService.getWindows()) {
        if (window.getId() == windowId && window.getType() == AccessibilityWindowInfo.TYPE_SYSTEM) {
            return true;
        }
    }

    return false;
}

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From source file:com.android.talkback.controller.CursorControllerApp.java

private boolean matchWindowType(AccessibilityWindowInfo window, int windowTypeFilter) {
    int windowType = window.getType();
    if ((windowTypeFilter & WINDOW_TYPE_SYSTEM) != 0 && windowType == AccessibilityWindowInfo.TYPE_SYSTEM) {
        return true;
    } else if ((windowTypeFilter & WINDOW_TYPE_APPLICATION) != 0
            && windowType == AccessibilityWindowInfo.TYPE_APPLICATION) {
        return true;
    } else if ((windowTypeFilter & WINDOW_TYPE_SPLIT_SCREEN_DIVIDER) != 0
            && windowType == AccessibilityWindowInfo.TYPE_SPLIT_SCREEN_DIVIDER) {
        return true;
    } else {//  www.j  a va 2  s .  c o  m
        return false;
    }
}

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