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WindowManagerGlobal.javaAPI DocAndroid 5.1 API20478Thu Mar 12 22:22:10 GMT 2015android.view

WindowManagerGlobal

public final class WindowManagerGlobal extends Object
Provides low-level communication with the system window manager for operations that are not associated with any particular context. This class is only used internally to implement global functions where the caller already knows the display and relevant compatibility information for the operation. For most purposes, you should use {@link WindowManager} instead since it is bound to a context.
see
WindowManagerImpl
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Fields Summary
private static final String
TAG
public static final int
RELAYOUT_RES_IN_TOUCH_MODE
The user is navigating with keys (not the touch screen), so navigational focus should be shown.
public static final int
RELAYOUT_RES_FIRST_TIME
This is the first time the window is being drawn, so the client must call drawingFinished() when done
public static final int
RELAYOUT_RES_SURFACE_CHANGED
The window manager has changed the surface from the last call.
public static final int
RELAYOUT_RES_ANIMATING
The window manager is currently animating. It will call IWindow.doneAnimating() when done.
public static final int
RELAYOUT_INSETS_PENDING
Flag for relayout: the client will be later giving internal insets; as a result, the window will not impact other window layouts until the insets are given.
public static final int
RELAYOUT_DEFER_SURFACE_DESTROY
Flag for relayout: the client may be currently using the current surface, so if it is to be destroyed as a part of the relayout the destroy must be deferred until later. The client will call performDeferredDestroy() when it is okay.
public static final int
ADD_FLAG_APP_VISIBLE
public static final int
ADD_FLAG_IN_TOUCH_MODE
public static final int
ADD_OKAY
public static final int
ADD_BAD_APP_TOKEN
public static final int
ADD_BAD_SUBWINDOW_TOKEN
public static final int
ADD_NOT_APP_TOKEN
public static final int
ADD_APP_EXITING
public static final int
ADD_DUPLICATE_ADD
public static final int
ADD_STARTING_NOT_NEEDED
public static final int
ADD_MULTIPLE_SINGLETON
public static final int
ADD_PERMISSION_DENIED
public static final int
ADD_INVALID_DISPLAY
public static final int
ADD_INVALID_TYPE
private static WindowManagerGlobal
sDefaultWindowManager
private static IWindowManager
sWindowManagerService
private static IWindowSession
sWindowSession
private final Object
mLock
private final ArrayList
mViews
private final ArrayList
mRoots
private final ArrayList
mParams
private final android.util.ArraySet
mDyingViews
private Runnable
mSystemPropertyUpdater
Constructors Summary
private WindowManagerGlobal()
Methods Summary
public voidaddView(View view, ViewGroup.LayoutParams params, Display display, Window parentWindow)

        if (view == null) {
            throw new IllegalArgumentException("view must not be null");
        }
        if (display == null) {
            throw new IllegalArgumentException("display must not be null");
        }
        if (!(params instanceof WindowManager.LayoutParams)) {
            throw new IllegalArgumentException("Params must be WindowManager.LayoutParams");
        }

        final WindowManager.LayoutParams wparams = (WindowManager.LayoutParams)params;
        if (parentWindow != null) {
            parentWindow.adjustLayoutParamsForSubWindow(wparams);
        } else {
            // If there's no parent and we're running on L or above (or in the
            // system context), assume we want hardware acceleration.
            final Context context = view.getContext();
            if (context != null
                    && context.getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP) {
                wparams.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
            }
        }

        ViewRootImpl root;
        View panelParentView = null;

        synchronized (mLock) {
            // Start watching for system property changes.
            if (mSystemPropertyUpdater == null) {
                mSystemPropertyUpdater = new Runnable() {
                    @Override public void run() {
                        synchronized (mLock) {
                            for (int i = mRoots.size() - 1; i >= 0; --i) {
                                mRoots.get(i).loadSystemProperties();
                            }
                        }
                    }
                };
                SystemProperties.addChangeCallback(mSystemPropertyUpdater);
            }

            int index = findViewLocked(view, false);
            if (index >= 0) {
                if (mDyingViews.contains(view)) {
                    // Don't wait for MSG_DIE to make it's way through root's queue.
                    mRoots.get(index).doDie();
                } else {
                    throw new IllegalStateException("View " + view
                            + " has already been added to the window manager.");
                }
                // The previous removeView() had not completed executing. Now it has.
            }

            // If this is a panel window, then find the window it is being
            // attached to for future reference.
            if (wparams.type >= WindowManager.LayoutParams.FIRST_SUB_WINDOW &&
                    wparams.type <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
                final int count = mViews.size();
                for (int i = 0; i < count; i++) {
                    if (mRoots.get(i).mWindow.asBinder() == wparams.token) {
                        panelParentView = mViews.get(i);
                    }
                }
            }

            root = new ViewRootImpl(view.getContext(), display);

            view.setLayoutParams(wparams);

            mViews.add(view);
            mRoots.add(root);
            mParams.add(wparams);
        }

        // do this last because it fires off messages to start doing things
        try {
            root.setView(view, wparams, panelParentView);
        } catch (RuntimeException e) {
            // BadTokenException or InvalidDisplayException, clean up.
            synchronized (mLock) {
                final int index = findViewLocked(view, false);
                if (index >= 0) {
                    removeViewLocked(index, true);
                }
            }
            throw e;
        }
public voidchangeCanvasOpacity(android.os.IBinder token, boolean opaque)

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        if (token == null) {
            return;
        }
        synchronized (mLock) {
            for (int i = mParams.size() - 1; i >= 0; --i) {
                if (mParams.get(i).token == token) {
                    mRoots.get(i).changeCanvasOpacity(opaque);
                    return;
                }
            }
        }
public voidcloseAll(android.os.IBinder token, java.lang.String who, java.lang.String what)

        synchronized (mLock) {
            int count = mViews.size();
            //Log.i("foo", "Closing all windows of " + token);
            for (int i = 0; i < count; i++) {
                //Log.i("foo", "@ " + i + " token " + mParams[i].token
                //        + " view " + mRoots[i].getView());
                if (token == null || mParams.get(i).token == token) {
                    ViewRootImpl root = mRoots.get(i);

                    //Log.i("foo", "Force closing " + root);
                    if (who != null) {
                        WindowLeaked leak = new WindowLeaked(
                                what + " " + who + " has leaked window "
                                + root.getView() + " that was originally added here");
                        leak.setStackTrace(root.getLocation().getStackTrace());
                        Log.e(TAG, "", leak);
                    }

                    removeViewLocked(i, false);
                }
            }
        }
voiddoRemoveView(ViewRootImpl root)

        synchronized (mLock) {
            final int index = mRoots.indexOf(root);
            if (index >= 0) {
                mRoots.remove(index);
                mParams.remove(index);
                final View view = mViews.remove(index);
                mDyingViews.remove(view);
            }
        }
        if (HardwareRenderer.sTrimForeground && HardwareRenderer.isAvailable()) {
            doTrimForeground();
        }
private voiddoTrimForeground()

        boolean hasVisibleWindows = false;
        synchronized (mLock) {
            for (int i = mRoots.size() - 1; i >= 0; --i) {
                final ViewRootImpl root = mRoots.get(i);
                if (root.mView != null && root.getHostVisibility() == View.VISIBLE
                        && root.mAttachInfo.mHardwareRenderer != null) {
                    hasVisibleWindows = true;
                } else {
                    root.destroyHardwareResources();
                }
            }
        }
        if (!hasVisibleWindows) {
            HardwareRenderer.trimMemory(
                    ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
        }
public voiddumpGfxInfo(java.io.FileDescriptor fd)

        FileOutputStream fout = new FileOutputStream(fd);
        PrintWriter pw = new FastPrintWriter(fout);
        try {
            synchronized (mLock) {
                final int count = mViews.size();

                pw.println("Profile data in ms:");

                for (int i = 0; i < count; i++) {
                    ViewRootImpl root = mRoots.get(i);
                    String name = getWindowName(root);
                    pw.printf("\n\t%s (visibility=%d)", name, root.getHostVisibility());

                    HardwareRenderer renderer =
                            root.getView().mAttachInfo.mHardwareRenderer;
                    if (renderer != null) {
                        renderer.dumpGfxInfo(pw, fd);
                    }
                }

                pw.println("\nView hierarchy:\n");

                int viewsCount = 0;
                int displayListsSize = 0;
                int[] info = new int[2];

                for (int i = 0; i < count; i++) {
                    ViewRootImpl root = mRoots.get(i);
                    root.dumpGfxInfo(info);

                    String name = getWindowName(root);
                    pw.printf("  %s\n  %d views, %.2f kB of display lists",
                            name, info[0], info[1] / 1024.0f);
                    pw.printf("\n\n");

                    viewsCount += info[0];
                    displayListsSize += info[1];
                }

                pw.printf("\nTotal ViewRootImpl: %d\n", count);
                pw.printf("Total Views:        %d\n", viewsCount);
                pw.printf("Total DisplayList:  %.2f kB\n\n", displayListsSize / 1024.0f);
            }
        } finally {
            pw.flush();
        }
private intfindViewLocked(View view, boolean required)

        final int index = mViews.indexOf(view);
        if (required && index < 0) {
            throw new IllegalArgumentException("View=" + view + " not attached to window manager");
        }
        return index;
public static android.view.WindowManagerGlobalgetInstance()

        synchronized (WindowManagerGlobal.class) {
            if (sDefaultWindowManager == null) {
                sDefaultWindowManager = new WindowManagerGlobal();
            }
            return sDefaultWindowManager;
        }
public ViewgetRootView(java.lang.String name)

        synchronized (mLock) {
            for (int i = mRoots.size() - 1; i >= 0; --i) {
                final ViewRootImpl root = mRoots.get(i);
                if (name.equals(getWindowName(root))) return root.getView();
            }
        }

        return null;
public java.lang.String[]getViewRootNames()

        synchronized (mLock) {
            final int numRoots = mRoots.size();
            String[] mViewRoots = new String[numRoots];
            for (int i = 0; i < numRoots; ++i) {
                mViewRoots[i] = getWindowName(mRoots.get(i));
            }
            return mViewRoots;
        }
public static IWindowManagergetWindowManagerService()

        synchronized (WindowManagerGlobal.class) {
            if (sWindowManagerService == null) {
                sWindowManagerService = IWindowManager.Stub.asInterface(
                        ServiceManager.getService("window"));
                try {
                    sWindowManagerService = getWindowManagerService();
                    ValueAnimator.setDurationScale(sWindowManagerService.getCurrentAnimatorScale());
                } catch (RemoteException e) {
                    Log.e(TAG, "Failed to get WindowManagerService, cannot set animator scale", e);
                }
            }
            return sWindowManagerService;
        }
private static java.lang.StringgetWindowName(ViewRootImpl root)

        return root.mWindowAttributes.getTitle() + "/" +
                root.getClass().getName() + '@" + Integer.toHexString(root.hashCode());
public static IWindowSessiongetWindowSession()

        synchronized (WindowManagerGlobal.class) {
            if (sWindowSession == null) {
                try {
                    InputMethodManager imm = InputMethodManager.getInstance();
                    IWindowManager windowManager = getWindowManagerService();
                    sWindowSession = windowManager.openSession(
                            new IWindowSessionCallback.Stub() {
                                @Override
                                public void onAnimatorScaleChanged(float scale) {
                                    ValueAnimator.setDurationScale(scale);
                                }
                            },
                            imm.getClient(), imm.getInputContext());
                } catch (RemoteException e) {
                    Log.e(TAG, "Failed to open window session", e);
                }
            }
            return sWindowSession;
        }
public static voidinitialize()

        getWindowManagerService();
public static IWindowSessionpeekWindowSession()

        synchronized (WindowManagerGlobal.class) {
            return sWindowSession;
        }
public voidremoveView(View view, boolean immediate)

        if (view == null) {
            throw new IllegalArgumentException("view must not be null");
        }

        synchronized (mLock) {
            int index = findViewLocked(view, true);
            View curView = mRoots.get(index).getView();
            removeViewLocked(index, immediate);
            if (curView == view) {
                return;
            }

            throw new IllegalStateException("Calling with view " + view
                    + " but the ViewAncestor is attached to " + curView);
        }
private voidremoveViewLocked(int index, boolean immediate)

        ViewRootImpl root = mRoots.get(index);
        View view = root.getView();

        if (view != null) {
            InputMethodManager imm = InputMethodManager.getInstance();
            if (imm != null) {
                imm.windowDismissed(mViews.get(index).getWindowToken());
            }
        }
        boolean deferred = root.die(immediate);
        if (view != null) {
            view.assignParent(null);
            if (deferred) {
                mDyingViews.add(view);
            }
        }
public voidreportNewConfiguration(android.content.res.Configuration config)

        synchronized (mLock) {
            int count = mViews.size();
            config = new Configuration(config);
            for (int i=0; i < count; i++) {
                ViewRootImpl root = mRoots.get(i);
                root.requestUpdateConfiguration(config);
            }
        }
public voidsetStoppedState(android.os.IBinder token, boolean stopped)

        synchronized (mLock) {
            int count = mViews.size();
            for (int i = 0; i < count; i++) {
                if (token == null || mParams.get(i).token == token) {
                    ViewRootImpl root = mRoots.get(i);
                    root.setStopped(stopped);
                }
            }
        }
public static booleanshouldDestroyEglContext(int trimLevel)

        // On low-end gfx devices we trim when memory is moderate;
        // on high-end devices we do this when low.
        if (trimLevel >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
            return true;
        }
        if (trimLevel >= ComponentCallbacks2.TRIM_MEMORY_MODERATE
                && !ActivityManager.isHighEndGfx()) {
            return true;
        }
        return false;
public static voidtrimForeground()

        if (HardwareRenderer.sTrimForeground && HardwareRenderer.isAvailable()) {
            WindowManagerGlobal wm = WindowManagerGlobal.getInstance();
            wm.doTrimForeground();
        }
public voidtrimMemory(int level)

        if (HardwareRenderer.isAvailable()) {
            if (shouldDestroyEglContext(level)) {
                // Destroy all hardware surfaces and resources associated to
                // known windows
                synchronized (mLock) {
                    for (int i = mRoots.size() - 1; i >= 0; --i) {
                        mRoots.get(i).destroyHardwareResources();
                    }
                }
                // Force a full memory flush
                level = ComponentCallbacks2.TRIM_MEMORY_COMPLETE;
            }

            HardwareRenderer.trimMemory(level);

            if (HardwareRenderer.sTrimForeground) {
                doTrimForeground();
            }
        }
public voidupdateViewLayout(View view, ViewGroup.LayoutParams params)

        if (view == null) {
            throw new IllegalArgumentException("view must not be null");
        }
        if (!(params instanceof WindowManager.LayoutParams)) {
            throw new IllegalArgumentException("Params must be WindowManager.LayoutParams");
        }

        final WindowManager.LayoutParams wparams = (WindowManager.LayoutParams)params;

        view.setLayoutParams(wparams);

        synchronized (mLock) {
            int index = findViewLocked(view, true);
            ViewRootImpl root = mRoots.get(index);
            mParams.remove(index);
            mParams.add(index, wparams);
            root.setLayoutParams(wparams, false);
        }