🏠 Add pull-handle to bottom toolbar

chrome/android/java/src/org/chromium/chrome/browser/toolbar/ToolbarPhone.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.toolbar;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
@@ skipping 77 matching lines @@
     private static final int URL_CLEAR_FOCUS_MENU_DELAY_MS = 250;
 
     private static final int TAB_SWITCHER_MODE_ENTER_ANIMATION_DURATION_MS = 200;
     private static final int TAB_SWITCHER_MODE_EXIT_NORMAL_ANIMATION_DURATION_MS = 200;
     private static final int TAB_SWITCHER_MODE_EXIT_FADE_ANIMATION_DURATION_MS = 100;
     private static final int TAB_SWITCHER_MODE_POST_EXIT_ANIMATION_DURATION_MS = 100;
 
     private static final float UNINITIALIZED_PERCENT = -1f;
 
     /** States that the toolbar can be in regarding the tab switcher. */
-    private static final int STATIC_TAB = 0;
-    private static final int TAB_SWITCHER = 1;
-    private static final int ENTERING_TAB_SWITCHER = 2;
-    private static final int EXITING_TAB_SWITCHER = 3;
+    protected static final int STATIC_TAB = 0;
+    protected static final int TAB_SWITCHER = 1;
+    protected static final int ENTERING_TAB_SWITCHER = 2;
+    protected static final int EXITING_TAB_SWITCHER = 3;
 
     @ViewDebug.ExportedProperty(category = "chrome", mapping = {
             @ViewDebug.IntToString(from = STATIC_TAB, to = "STATIC_TAB"),
             @ViewDebug.IntToString(from = TAB_SWITCHER, to = "TAB_SWITCHER"),
             @ViewDebug.IntToString(from = ENTERING_TAB_SWITCHER, to = "ENTERING_TAB_SWITCHER"),
             @ViewDebug.IntToString(from = EXITING_TAB_SWITCHER, to = "EXITING_TAB_SWITCHER")
             })
 
     static final int LOCATION_BAR_TRANSPARENT_BACKGROUND_ALPHA = 51;
 
@@ skipping 11 matching lines @@
     private ImageView mToolbarShadow;
 
     private final int mProgressBackBackgroundColorWhite;
 
     private ObjectAnimator mTabSwitcherModeAnimation;
     private ObjectAnimator mDelayedTabSwitcherModeAnimation;
 
     private final List<View> mTabSwitcherModeViews = new ArrayList<>();
     private final Set<View> mBrowsingModeViews = new HashSet<>();
     @ViewDebug.ExportedProperty(category = "chrome")
-    private int mTabSwitcherState;
+    protected int mTabSwitcherState;
 
     // This determines whether or not the toolbar draws as expected (false) or whether it always
     // draws as if it's showing the non-tabswitcher, non-animating toolbar. This is used in grabbing
     // a bitmap to use as a texture representation of this view.
     @ViewDebug.ExportedProperty(category = "chrome")
     private boolean mTextureCaptureMode;
     private boolean mForceTextureCapture;
     private boolean mUseLightDrawablesForTextureCapture;
     private boolean mLightDrawablesUsedForLastTextureCapture;
 
@@ skipping 28 matching lines @@
     @ViewDebug.ExportedProperty(category = "chrome")
     private float mUrlFocusChangePercent;
 
     /**
      * The degree to which the omnibox has expanded to full width, either because it is getting
      * focused or the NTP search box is being scrolled up. Note that in the latter case, the actual
      * width of the omnibox is not interpolated linearly from this value. The value will be the
      * maximum of {@link #mUrlFocusChangePercent} and {@link #mNtpSearchBoxScrollPercent}.
      */
     @ViewDebug.ExportedProperty(category = "chrome")
-    private float mUrlExpansionPercent;
+    protected float mUrlExpansionPercent;
     private AnimatorSet mUrlFocusLayoutAnimator;
     private boolean mDisableLocationBarRelayout;
     private boolean mLayoutLocationBarInFocusedMode;
     private int mUnfocusedLocationBarLayoutWidth;
     private int mUnfocusedLocationBarLayoutLeft;
     private boolean mUnfocusedLocationBarUsesTransparentBg;
 
     private int mLocationBarBackgroundAlpha = 255;
     private float mNtpSearchBoxScrollPercent = UNINITIALIZED_PERCENT;
     private ColorDrawable mToolbarBackground;
@@ skipping 48 matching lines @@
 
     /** Manages when the Toolbar hides and unhides. */
     private BrowserStateBrowserControlsVisibilityDelegate mControlsVisibilityDelegate;
 
     /** Token held when the TabSwitcherCallout is displayed to prevent the Toolbar from hiding. */
     private int mFullscreenCalloutToken = FullscreenManager.INVALID_TOKEN;
 
     /**
      * Used to specify the visual state of the toolbar.
      */
-    private enum VisualState {
+    protected enum VisualState {
         TAB_SWITCHER_INCOGNITO,
         TAB_SWITCHER_NORMAL,
         NORMAL,
         INCOGNITO,
         BRAND_COLOR,
         NEW_TAB_NORMAL
     }
 
     private VisualState mVisualState = VisualState.NORMAL;
     private VisualState mOverlayDrawablesVisualState;
-    private boolean mUseLightToolbarDrawables;
+    protected boolean mUseLightToolbarDrawables;
 
     private NewTabPage mVisibleNewTabPage;
     private float mPreTextureCaptureAlpha = 1f;
     private boolean mIsOverlayTabStackDrawableLight;
 
     // The following are some properties used during animation.  We use explicit property classes
     // to avoid the cost of reflection for each animation setup.
 
     private final Property<ToolbarPhone, Float> mUrlFocusChangePercentProperty =
             new Property<ToolbarPhone, Float>(Float.class, "") {
@@ skipping 458 matching lines @@
     @Override
     public void onNtpScrollChanged(float scrollPercentage) {
         mNtpSearchBoxScrollPercent = scrollPercentage;
         updateUrlExpansionPercent();
         updateUrlExpansionAnimation();
     }
 
     /**
      * Calculate the bounds for the location bar background and set them to {@code out}.
      */
-    private void updateLocationBarBackgroundBounds(Rect out, VisualState visualState) {
+    protected void updateLocationBarBackgroundBounds(Rect out, VisualState visualState) {
         // Calculate the visible boundaries of the left and right most child views of the
         // location bar.
         float expansion = visualState == VisualState.NEW_TAB_NORMAL ? 1 : mUrlExpansionPercent;
         int leftViewPosition = (int) MathUtils.interpolate(
                 getViewBoundsLeftOfLocationBar(visualState),
                 -mLocationBarBackgroundCornerRadius,
                 expansion);
         int rightViewPosition = (int) MathUtils.interpolate(
                 getViewBoundsRightOfLocationBar(visualState),
                 getWidth() + mLocationBarBackgroundCornerRadius,
@@ skipping 1263 matching lines @@
 
     private VisualState computeVisualState(boolean isInTabSwitcherMode) {
         if (isInTabSwitcherMode && isIncognito()) return VisualState.TAB_SWITCHER_INCOGNITO;
         if (isInTabSwitcherMode && !isIncognito()) return VisualState.TAB_SWITCHER_NORMAL;
         if (isLocationBarShownInNTP()) return VisualState.NEW_TAB_NORMAL;
         if (isIncognito()) return VisualState.INCOGNITO;
         if (getToolbarDataProvider().isUsingBrandColor()) return VisualState.BRAND_COLOR;
         return VisualState.NORMAL;
     }
 
-    private void updateVisualsForToolbarState() {
+    protected void updateVisualsForToolbarState() {
         final boolean isIncognito = isIncognito();
 
         // These are important for setting visual state while the entering or leaving the tab
         // switcher.
         boolean inOrEnteringStaticTab = mTabSwitcherState == STATIC_TAB
                 || mTabSwitcherState == EXITING_TAB_SWITCHER;
         boolean inOrEnteringTabSwitcher = !inOrEnteringStaticTab;
 
         VisualState newVisualState = computeVisualState(inOrEnteringTabSwitcher);
 
@@ skipping 224 matching lines @@
         });
 
         if (mControlsVisibilityDelegate != null) {
             mFullscreenCalloutToken =
                     mControlsVisibilityDelegate.showControlsPersistentAndClearOldToken(
                             mFullscreenCalloutToken);
         }
     }
 }