Java Code Examples for org.chromium.chrome.browser.device.DeviceClassManager#enableAccessibilityLayout()

/**
 * Show the overview {@link Layout}.  This is generally a {@link Layout} that visibly represents
 * all of the {@link Tab}s opened by the user.
 * @param animate Whether or not to animate the transition to overview mode.
 */
public void showOverview(boolean animate) {
    boolean useAccessibility = DeviceClassManager.enableAccessibilityLayout();

    boolean accessibilityIsVisible =
            useAccessibility && getActiveLayout() == mOverviewListLayout;
    boolean normalIsVisible = getActiveLayout() == mOverviewLayout && mOverviewLayout != null;

    // We only want to use the AccessibilityOverviewLayout if the following are all valid:
    // 1. We're already showing the AccessibilityOverviewLayout OR we're using accessibility.
    // 2. We're not already showing the normal OverviewLayout (or we are on a tablet, in which
    //    case the normal layout is always visible).
    if ((accessibilityIsVisible || useAccessibility) && !normalIsVisible) {
        startShowing(mOverviewListLayout, animate);
    } else if (mOverviewLayout != null) {
        startShowing(mOverviewLayout, animate);
    }
}
 

@Override
protected void tabClosed(int id, int nextId, boolean incognito, boolean tabRemoved) {
    boolean showOverview = nextId == Tab.INVALID_TAB_ID;
    Layout overviewLayout = DeviceClassManager.enableAccessibilityLayout() ? mOverviewListLayout
                                                                           : mOverviewLayout;
    if (getActiveLayout() != overviewLayout && showOverview) {
        // Since there will be no 'next' tab to display, switch to
        // overview mode when the animation is finished.
        setNextLayout(overviewLayout);
    }
    getActiveLayout().onTabClosed(time(), id, nextId, incognito);
    Tab nextTab = getTabById(nextId);
    if (nextTab != null) nextTab.requestFocus();
    boolean animate = !tabRemoved && animationsEnabled();
    if (getActiveLayout() != overviewLayout && showOverview && !animate) {
        startShowing(overviewLayout, false);
    }
}
 

@Override
protected void drawTabSwitcherFadeAnimation(boolean animationFinished, float progress) {
    mNewTabButton.setAlpha(progress);

    mLocationBar.setAlpha(1f - progress);
    if (mUseToolbarHandle) mToolbarHandleView.setAlpha(1f - progress);

    int tabSwitcherThemeColor = getToolbarColorForVisualState(VisualState.TAB_SWITCHER_NORMAL);

    updateToolbarBackground(ColorUtils.getColorWithOverlay(
            getTabThemeColor(), tabSwitcherThemeColor, progress));

    // Don't use transparency for accessibility mode or low-end devices since the
    // {@link OverviewListLayout} will be used instead of the normal tab switcher.
    if (!DeviceClassManager.enableAccessibilityLayout()) {
        float alphaTransition = 1f - TAB_SWITCHER_TOOLBAR_ALPHA;
        mToolbarBackground.setAlpha((int) ((1f - (alphaTransition * progress)) * 255));
    }
}
 

/**
 * @return Whether or not to use the accessibility layout.
 */
private boolean useAccessibilityLayout() {
    return DeviceClassManager.isAccessibilityModeEnabled(mHost.getContext())
            || DeviceClassManager.enableAccessibilityLayout();
}
 

/**
 * @return Whether or not to use the accessibility layout.
 */
protected boolean useAccessibilityLayout() {
    return DeviceClassManager.isAccessibilityModeEnabled(mHost.getContext())
            || DeviceClassManager.enableAccessibilityLayout();
}
 

/**
 * @return Whether or not to use the accessibility layout.
 */
protected boolean useAccessibilityLayout() {
    return DeviceClassManager.isAccessibilityModeEnabled(mHost.getContext())
            || DeviceClassManager.enableAccessibilityLayout();
}
 

/**
 * See {@link #setTabSwitcherMode(boolean, boolean, boolean)}.
 */
protected void setTabSwitcherMode(boolean inTabSwitcherMode, boolean showToolbar,
        boolean delayAnimation, boolean animate) {
    // If setting tab switcher mode to true and the browser is already animating or in the tab
    // switcher skip.
    if (inTabSwitcherMode && (mTabSwitcherState == TAB_SWITCHER
            || mTabSwitcherState == ENTERING_TAB_SWITCHER)) {
        return;
    }

    // Likewise if exiting the tab switcher.
    if (!inTabSwitcherMode && (mTabSwitcherState == STATIC_TAB
            || mTabSwitcherState == EXITING_TAB_SWITCHER)) {
        return;
    }
    mTabSwitcherState = inTabSwitcherMode ? ENTERING_TAB_SWITCHER : EXITING_TAB_SWITCHER;

    mLocationBar.setUrlBarFocusable(false);

    finishAnimations();

    mDelayingTabSwitcherAnimation = delayAnimation;

    if (inTabSwitcherMode) {
        if (mUrlFocusLayoutAnimator != null && mUrlFocusLayoutAnimator.isRunning()) {
            mUrlFocusLayoutAnimator.end();
            mUrlFocusLayoutAnimator = null;
            // After finishing the animation, force a re-layout of the location bar,
            // so that the final translation position is correct (since onMeasure updates
            // won't happen in tab switcher mode). crbug.com/518795.
            layoutLocationBar(getMeasuredWidth());
            updateUrlExpansionAnimation();
        }
        mNewTabButton.setEnabled(true);
        updateViewsForTabSwitcherMode();
        mTabSwitcherModeAnimation = createEnterTabSwitcherModeAnimation();
    } else {
        if (!mDelayingTabSwitcherAnimation) {
            mTabSwitcherModeAnimation = createExitTabSwitcherAnimation(showToolbar);
        }
    }

    updateButtonsTranslationY();
    mAnimateNormalToolbar = showToolbar;
    if (mTabSwitcherModeAnimation != null) mTabSwitcherModeAnimation.start();

    if (DeviceClassManager.enableAccessibilityLayout() || !animate) finishAnimations();

    postInvalidateOnAnimation();
}