/* * 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.text.Html; import android.text.Html.ImageGetter; import android.text.Spanned; import androidx.annotation.NonNull; import androidx.annotation.Nullable; public class HtmlFormatter { private HtmlFormatter() { } public static Spanned formatHtml(@NonNull HtmlFormatterBuilder builder) { return formatHtml(builder.getHtml(), builder.getImageGetter(), builder.getClickableTableSpan(), builder.getDrawTableLinkSpan(), builder.getOnClickATagListener(), builder.getIndent(), builder.isRemoveTrailingWhiteSpace()); } public static Spanned formatHtml(@Nullable String html, ImageGetter imageGetter, ClickableTableSpan clickableTableSpan, DrawTableLinkSpan drawTableLinkSpan, OnClickATagListener onClickATagListener, float indent, boolean removeTrailingWhiteSpace) { final HtmlTagHandler htmlTagHandler = new HtmlTagHandler(); htmlTagHandler.setClickableTableSpan(clickableTableSpan); htmlTagHandler.setDrawTableLinkSpan(drawTableLinkSpan); htmlTagHandler.setOnClickATagListener(onClickATagListener); htmlTagHandler.setListIndentPx(indent); html = htmlTagHandler.overrideTags(html); Spanned formattedHtml; if (removeTrailingWhiteSpace) { formattedHtml = removeHtmlBottomPadding(Html.fromHtml(html, imageGetter, new WrapperContentHandler(htmlTagHandler))); } else { formattedHtml = Html.fromHtml(html, imageGetter, new WrapperContentHandler(htmlTagHandler)); } return formattedHtml; } /** * Html.fromHtml sometimes adds extra space at the bottom. * This methods removes this space again. * See https://github.com/SufficientlySecure/html-textview/issues/19 */ @Nullable private static Spanned removeHtmlBottomPadding(@Nullable Spanned text) { if (text == null) { return null; } while (text.length() > 0 && text.charAt(text.length() - 1) == '\n') { text = (Spanned) text.subSequence(0, text.length() - 1); } return text; } }