cdcc3ae52c
1. Implement API extends Material Next FooterBarPreference and support Accessibility API for icons 2. Apply solutions to accessibility tools and framework tools in accessibility settings page. 3. Apply DashboardFragment for Caption preference for xml parser Bug: 185973304 Test: make RunSettingsRoboTests -j52 Change-Id: I6b80bc80190d6666e3fbcd462442a9f2c0e60bba
110 lines
3.7 KiB
Java
110 lines
3.7 KiB
Java
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.accessibility;
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import android.content.Context;
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import android.text.TextUtils;
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import android.text.method.LinkMovementMethod;
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import android.util.AttributeSet;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import androidx.preference.PreferenceViewHolder;
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import com.android.settingslib.R;
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import com.android.settingslib.widget.FooterPreference;
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/**
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* A custom preference acting as footer of a page. It has a field for icon and text. It is added
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* to screen as the last preference and groups of icon and text content in accessibility-focusable
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* {@link android.view.accessibility.AccessibilityNodeInfo} for TalkBack to use.
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*/
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public final class AccessibilityFooterPreference extends FooterPreference {
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private CharSequence mIconContentDescription;
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private boolean mLinkEnabled;
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public AccessibilityFooterPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public AccessibilityFooterPreference(Context context) {
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super(context);
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}
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@Override
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public void onBindViewHolder(PreferenceViewHolder holder) {
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super.onBindViewHolder(holder);
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final TextView title = holder.itemView.findViewById(android.R.id.title);
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if (mLinkEnabled) {
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// When a TextView has a movement method, it will set the view to clickable. This makes
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// View.onTouchEvent always return true and consumes the touch event, essentially
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// nullifying any return values of MovementMethod.onTouchEvent.
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// To still allow propagating touch events to the parent when this view doesn't have
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// links, we only set the movement method here if the text contains links.
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title.setMovementMethod(LinkMovementMethod.getInstance());
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} else {
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title.setMovementMethod(/* movement= */ null);
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}
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final LinearLayout infoFrame = holder.itemView.findViewById(R.id.icon_frame);
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if (!TextUtils.isEmpty(mIconContentDescription)) {
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// Groups related content.
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infoFrame.setContentDescription(mIconContentDescription);
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title.setFocusable(false);
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} else {
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infoFrame.setContentDescription(null);
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title.setFocusable(true);
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}
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}
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/**
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* Sets the content description of the icon.
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*/
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public void setIconContentDescription(CharSequence iconContentDescription) {
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if (!TextUtils.equals(iconContentDescription, mIconContentDescription)) {
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mIconContentDescription = iconContentDescription;
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notifyChanged();
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}
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}
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/**
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* Gets the content description of the icon.
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*/
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public CharSequence getIconContentDescription() {
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return mIconContentDescription;
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}
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/**
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* Sets the title field supports movement method.
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*/
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public void setLinkEnabled(boolean enabled) {
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if (mLinkEnabled != enabled) {
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mLinkEnabled = enabled;
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notifyChanged();
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}
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}
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/**
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* Returns true if the title field supports movement method.
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*/
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public boolean isLinkEnabled() {
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return mLinkEnabled;
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}
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}
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