Pull out PreferenceControllers from AccessibilitySettings

- clean up the format of accessibility_settings - To leverage the existing TtsPreferenceController and FontSizePreferenceController - pull out the logic of magnification from AccessibilitySettings Bug: 135056871 Test: manual, robotest Change-Id: I414fa7a04fd558d3a3a8b5e157469c198a772732
2019-06-17 21:19:37 +08:00
parent dce601db84
commit d37618c8ed
4 changed files with 212 additions and 116 deletions
--- a/src/com/android/settings/accessibility/MagnificationPreferenceController.java
+++ b/src/com/android/settings/accessibility/MagnificationPreferenceController.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.accessibility;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+public class MagnificationPreferenceController extends BasePreferenceController {
+
+    private Preference mPreference;
+
+    public MagnificationPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        final boolean tripleTapEnabled = Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, 0) == 1;
+        final boolean buttonEnabled = Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0) == 1;
+
+        int summaryResId = 0;
+        if (!tripleTapEnabled && !buttonEnabled) {
+            summaryResId = R.string.accessibility_feature_state_off;
+        } else if (!tripleTapEnabled && buttonEnabled) {
+            summaryResId = R.string.accessibility_screen_magnification_navbar_title;
+        } else if (tripleTapEnabled && !buttonEnabled) {
+            summaryResId = R.string.accessibility_screen_magnification_gestures_title;
+        } else {
+            summaryResId = R.string.accessibility_screen_magnification_state_navbar_gesture;
+        }
+        return mContext.getResources().getText(summaryResId);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+        configureMagnificationPreferenceIfNeeded();
+    }
+
+    private void configureMagnificationPreferenceIfNeeded() {
+        // Some devices support only a single magnification mode. In these cases, we redirect to
+        // the magnification mode's UI directly, rather than showing a PreferenceScreen with a
+        // single list item.
+        if (!MagnificationPreferenceFragment.isApplicable(mContext.getResources())) {
+            mPreference.setFragment(ToggleScreenMagnificationPreferenceFragment.class.getName());
+            final Bundle extras = mPreference.getExtras();
+            MagnificationGesturesPreferenceController
+                    .populateMagnificationGesturesPreferenceExtras(extras, mContext);
+        }
+    }
+}