1 files changed, 0 insertions, 235 deletions
diff --git a/chromium/chrome/android/java/src/org/chromium/chrome/browser/accessibility/FontSizePrefs.java b/chromium/chrome/android/java/src/org/chromium/chrome/browser/accessibility/FontSizePrefs.java
deleted file mode 100644
index 6edfbc23ffe..00000000000
--- a/chromium/chrome/android/java/src/org/chromium/chrome/browser/accessibility/FontSizePrefs.java
+++ /dev/null
@@ -1,235 +0,0 @@
-// Copyright 2014 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.accessibility;
-
-import android.annotation.SuppressLint;
-import android.content.SharedPreferences;
-
-import org.chromium.base.ContextUtils;
-import org.chromium.base.ObserverList;
-import org.chromium.base.ThreadUtils;
-import org.chromium.base.VisibleForTesting;
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.NativeMethods;
-import org.chromium.chrome.browser.util.MathUtils;
-
-/**
- * Singleton class for accessing these font size-related preferences:
- *  - User Font Scale Factor: the font scale value that the user sees and can set. This is a value
- *        between 50% and 200% (i.e. 0.5 and 2).
- *  - Font Scale Factor: the font scale factor applied to webpage text during font boosting. This
- *        equals the user font scale factor times the Android system font scale factor, which
- *        reflects the font size indicated in Android settings > Display > Font size.
- *  - Force Enable Zoom: whether force enable zoom is on or off
- *  - User Set Force Enable Zoom: whether the user has manually set the force enable zoom button
- */
-public class FontSizePrefs {
-    /**
-     * The font scale threshold beyond which force enable zoom is automatically turned on. It
-     * is chosen such that force enable zoom will be activated when the accessibility large text
-     * setting is on (i.e. this value should be the same as or lesser than the font size scale used
-     * by accessiblity large text).
-     */
-    public static final float FORCE_ENABLE_ZOOM_THRESHOLD_MULTIPLIER = 1.3f;
-
-    private static final float EPSILON = 0.001f;
-
-    static final String PREF_USER_SET_FORCE_ENABLE_ZOOM = "user_set_force_enable_zoom";
-    static final String PREF_USER_FONT_SCALE_FACTOR = "user_font_scale_factor";
-
-    @SuppressLint("StaticFieldLeak")
-    private static FontSizePrefs sFontSizePrefs;
-
-    private final long mFontSizePrefsAndroidPtr;
-    private final ObserverList<FontSizePrefsObserver> mObserverList;
-
-    private Float mSystemFontScaleForTests;
-
-    /**
-     * Interface for observing changes in font size-related preferences.
-     */
-    public interface FontSizePrefsObserver {
-        void onFontScaleFactorChanged(float fontScaleFactor, float userFontScaleFactor);
-        void onForceEnableZoomChanged(boolean enabled);
-    }
-
-    private FontSizePrefs() {
-        mFontSizePrefsAndroidPtr = FontSizePrefsJni.get().init(FontSizePrefs.this);
-        mObserverList = new ObserverList<FontSizePrefsObserver>();
-    }
-
-    /**
-     * Returns the singleton FontSizePrefs, constructing it if it doesn't already exist.
-     */
-    public static FontSizePrefs getInstance() {
-        ThreadUtils.assertOnUiThread();
-        if (sFontSizePrefs == null) {
-            sFontSizePrefs = new FontSizePrefs();
-        }
-        return sFontSizePrefs;
-    }
-
-    /**
-     * Adds an observer to listen for changes to font scale-related preferences.
-     */
-    public void addObserver(FontSizePrefsObserver observer) {
-        mObserverList.addObserver(observer);
-    }
-
-    /**
-     * Removes an observer so it will no longer receive updates for changes to font scale-related
-     * preferences.
-     */
-    public void removeObserver(FontSizePrefsObserver observer) {
-        mObserverList.removeObserver(observer);
-    }
-
-    /**
-     * Updates the fontScaleFactor based on the userFontScaleFactor and the system-wide font scale.
-     *
-     * This should be called during application start-up and whenever the system font size changes.
-     */
-    public void onSystemFontScaleChanged() {
-        float userFontScaleFactor = getUserFontScaleFactor();
-        if (userFontScaleFactor != 0f) {
-            setFontScaleFactor(userFontScaleFactor * getSystemFontScale());
-        }
-    }
-
-    /**
-     * Sets the userFontScaleFactor. This should be a value between .5 and 2.
-     */
-    public void setUserFontScaleFactor(float userFontScaleFactor) {
-        SharedPreferences.Editor sharedPreferencesEditor =
-                ContextUtils.getAppSharedPreferences().edit();
-        sharedPreferencesEditor.putFloat(PREF_USER_FONT_SCALE_FACTOR, userFontScaleFactor);
-        sharedPreferencesEditor.apply();
-        setFontScaleFactor(userFontScaleFactor * getSystemFontScale());
-    }
-
-    /**
-     * Returns the userFontScaleFactor. This is the value that should be displayed to the user.
-     */
-    public float getUserFontScaleFactor() {
-        SharedPreferences sharedPreferences = ContextUtils.getAppSharedPreferences();
-        float userFontScaleFactor = sharedPreferences.getFloat(PREF_USER_FONT_SCALE_FACTOR, 0f);
-        if (userFontScaleFactor == 0f) {
-            float fontScaleFactor = getFontScaleFactor();
-
-            if (Math.abs(fontScaleFactor - 1f) <= EPSILON) {
-                // If the font scale factor is 1, assume that the user hasn't customized their font
-                // scale and/or wants the default value
-                userFontScaleFactor = 1f;
-            } else {
-                // Initialize userFontScaleFactor based on fontScaleFactor, since
-                // userFontScaleFactor was added long after fontScaleFactor.
-                userFontScaleFactor =
-                        MathUtils.clamp(fontScaleFactor / getSystemFontScale(), 0.5f, 2f);
-            }
-            SharedPreferences.Editor sharedPreferencesEditor = sharedPreferences.edit();
-            sharedPreferencesEditor.putFloat(PREF_USER_FONT_SCALE_FACTOR, userFontScaleFactor);
-            sharedPreferencesEditor.apply();
-        }
-        return userFontScaleFactor;
-    }
-
-    /**
-     * Returns the fontScaleFactor. This is the product of the userFontScaleFactor and the system
-     * font scale, and is the amount by which webpage text will be scaled during font boosting.
-     */
-    public float getFontScaleFactor() {
-        return FontSizePrefsJni.get().getFontScaleFactor(
-                mFontSizePrefsAndroidPtr, FontSizePrefs.this);
-    }
-
-    /**
-     * Sets forceEnableZoom due to a user request (e.g. checking a checkbox). This implicitly sets
-     * userSetForceEnableZoom.
-     */
-    public void setForceEnableZoomFromUser(boolean enabled) {
-        setForceEnableZoom(enabled, true);
-    }
-
-    /**
-     * Returns whether forceEnableZoom is enabled.
-     */
-    public boolean getForceEnableZoom() {
-        return FontSizePrefsJni.get().getForceEnableZoom(
-                mFontSizePrefsAndroidPtr, FontSizePrefs.this);
-    }
-
-    /**
-     * Sets a mock value for the system-wide font scale. Use only in tests.
-     */
-    @VisibleForTesting
-    void setSystemFontScaleForTest(float fontScale) {
-        mSystemFontScaleForTests = fontScale;
-    }
-
-    private float getSystemFontScale() {
-        if (mSystemFontScaleForTests != null) return mSystemFontScaleForTests;
-        return ContextUtils.getApplicationContext().getResources().getConfiguration().fontScale;
-    }
-
-    private void setForceEnableZoom(boolean enabled, boolean fromUser) {
-        SharedPreferences.Editor sharedPreferencesEditor =
-                ContextUtils.getAppSharedPreferences().edit();
-        sharedPreferencesEditor.putBoolean(PREF_USER_SET_FORCE_ENABLE_ZOOM, fromUser);
-        sharedPreferencesEditor.apply();
-        FontSizePrefsJni.get().setForceEnableZoom(
-                mFontSizePrefsAndroidPtr, FontSizePrefs.this, enabled);
-    }
-
-    private boolean getUserSetForceEnableZoom() {
-        return ContextUtils.getAppSharedPreferences().getBoolean(
-                PREF_USER_SET_FORCE_ENABLE_ZOOM, false);
-    }
-
-    private void setFontScaleFactor(float fontScaleFactor) {
-        float previousFontScaleFactor = getFontScaleFactor();
-        FontSizePrefsJni.get().setFontScaleFactor(
-                mFontSizePrefsAndroidPtr, FontSizePrefs.this, fontScaleFactor);
-
-        if (previousFontScaleFactor < FORCE_ENABLE_ZOOM_THRESHOLD_MULTIPLIER
-                && fontScaleFactor >= FORCE_ENABLE_ZOOM_THRESHOLD_MULTIPLIER
-                && !getForceEnableZoom()) {
-            // If the font scale factor just crossed above the threshold, set force enable zoom even
-            // if the user has previously unset it.
-            setForceEnableZoom(true, false);
-        } else if (previousFontScaleFactor >= FORCE_ENABLE_ZOOM_THRESHOLD_MULTIPLIER
-                && fontScaleFactor < FORCE_ENABLE_ZOOM_THRESHOLD_MULTIPLIER
-                && !getUserSetForceEnableZoom()) {
-            // If the font scale factor just crossed below the threshold and the user didn't set
-            // force enable zoom manually, then unset force enable zoom.
-            setForceEnableZoom(false, false);
-        }
-    }
-
-    @CalledByNative
-    private void onFontScaleFactorChanged(float fontScaleFactor) {
-        float userFontScaleFactor = getUserFontScaleFactor();
-        for (FontSizePrefsObserver observer : mObserverList) {
-            observer.onFontScaleFactorChanged(fontScaleFactor, userFontScaleFactor);
-        }
-    }
-
-    @CalledByNative
-    private void onForceEnableZoomChanged(boolean enabled) {
-        for (FontSizePrefsObserver observer : mObserverList) {
-            observer.onForceEnableZoomChanged(enabled);
-        }
-    }
-
-    @NativeMethods
-    interface Natives {
-        long init(FontSizePrefs caller);
-        void setFontScaleFactor(
-                long nativeFontSizePrefsAndroid, FontSizePrefs caller, float fontScaleFactor);
-        float getFontScaleFactor(long nativeFontSizePrefsAndroid, FontSizePrefs caller);
-        boolean getForceEnableZoom(long nativeFontSizePrefsAndroid, FontSizePrefs caller);
-        void setForceEnableZoom(
-                long nativeFontSizePrefsAndroid, FontSizePrefs caller, boolean enabled);
-    }
-}