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/*
* Copyright (C) 2013 Dominik Schürmann <dominik@dominikschuermann.de>
*
* 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 org.sufficientlysecure.htmltextview;
import android.content.Context;
import android.text.Html;
import android.text.method.LinkMovementMethod;
import android.util.AttributeSet;
import java.io.InputStream;
public class HtmlTextView extends JellyBeanSpanFixTextView {
public static final String TAG = "HtmlTextView";
public HtmlTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public HtmlTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public HtmlTextView(Context context) {
super(context);
}
/**
* http://stackoverflow.com/questions/309424/read-convert-an-inputstream-to-a-string
*
* @param is
* @return
*/
static private String convertStreamToString(java.io.InputStream is) {
java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
return s.hasNext() ? s.next() : "";
}
/**
* Loads HTML from a raw resource, i.e., a HTML file in res/raw/.
* This allows translatable resource (e.g., res/raw-de/ for german).
* The containing HTML is parsed to Android's Spannable format and then displayed.
*
* @param context
* @param id for example: R.raw.help
*/
public void setHtmlFromRawResource(Context context, int id) {
// load html from html file from /res/raw
InputStream inputStreamText = context.getResources().openRawResource(id);
setHtmlFromString(convertStreamToString(inputStreamText));
}
/**
* Parses String containing HTML to Android's Spannable format and displays it in this TextView.
*
* @param html String containing HTML, for example: "<b>Hello world!</b>"
*/
public void setHtmlFromString(String html) {
// this uses Android's Html class for basic parsing, and HtmlTagHandler
setText(Html.fromHtml(html, new UrlImageGetter(this, getContext()), new HtmlTagHandler()));
// make links work
setMovementMethod(LinkMovementMethod.getInstance());
// no flickering when clicking textview for Android < 4
// text.setTextColor(getResources().getColor(android.R.color.secondary_text_dark_nodisable));
}
}
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