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/*
* 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.text.Html;
import android.text.TextUtils;
import android.widget.TextView;
import androidx.preference.PreferenceViewHolder;
/**
* A custom {@link android.widget.TextView} preference that shows html text with a custom tag
* filter.
*/
public final class HtmlTextPreference extends StaticTextPreference {
private int mFlag = Html.FROM_HTML_MODE_COMPACT;
private Html.ImageGetter mImageGetter;
private Html.TagHandler mTagHandler;
HtmlTextPreference(Context context) {
super(context);
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
final TextView summaryView = holder.itemView.findViewById(android.R.id.summary);
if (summaryView != null && !TextUtils.isEmpty(getSummary())) {
summaryView.setText(
Html.fromHtml(getSummary().toString(), mFlag, mImageGetter, mTagHandler));
}
}
/**
* Sets the flag to which text format to be applied.
*
* @param flag to indicate that html text format
*/
public void setFlag(int flag) {
if (flag != mFlag) {
mFlag = flag;
notifyChanged();
}
}
/**
* Sets image getter and help to load corresponding images when parsing.
*
* @param imageGetter to load image by image tag content
*/
public void setImageGetter(Html.ImageGetter imageGetter) {
if (imageGetter != null && !imageGetter.equals(mImageGetter)) {
mImageGetter = imageGetter;
notifyChanged();
}
}
/**
* Sets tag handler to handle the unsupported tags.
*
* @param tagHandler the handler for unhandled tags
*/
public void setTagHandler(Html.TagHandler tagHandler) {
if (tagHandler != null && !tagHandler.equals(mTagHandler)) {
mTagHandler = tagHandler;
notifyChanged();
}
}
}
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