package org.wordpress.android.util;
/*
* Copyright (C) 2007 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.
*/
import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.text.Editable;
import android.text.Layout;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.AbsoluteSizeSpan;
import android.text.style.AlignmentSpan;
import android.text.style.CharacterStyle;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.text.style.ParagraphStyle;
import android.text.style.QuoteSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.StrikethroughSpan;
import android.text.style.StyleSpan;
import android.text.style.SubscriptSpan;
import android.text.style.SuperscriptSpan;
import android.text.style.TextAppearanceSpan;
import android.text.style.TypefaceSpan;
import android.text.style.URLSpan;
import android.view.Display;
import android.view.WindowManager;
import org.ccil.cowan.tagsoup.HTMLSchema;
import org.ccil.cowan.tagsoup.Parser;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.wordpress.android.WordPress;
import org.wordpress.android.models.MediaFile;
import org.wordpress.android.models.Postable;
/**
* This class processes HTML strings into displayable styled text. Not all HTML
* tags are supported.
*/
public class WPHtml {
/**
* Customzed QuoteSpan for use in SpannableString's
*/
public static class WPQuoteSpan extends QuoteSpan {
private static final int STRIPE_WIDTH = 5;
private static final int GAP_WIDTH = 20;
public static final int STRIPE_COLOR = 0xFF21759B;
private static final boolean IS_ICS = Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH;
public WPQuoteSpan() {
super(STRIPE_COLOR);
}
@Override
public int getLeadingMargin(boolean first) {
if (IS_ICS) {
int margin = GAP_WIDTH * 2 + STRIPE_WIDTH;
return margin;
} else {
return super.getLeadingMargin(first);
}
}
/**
* Draw a nice thick gray bar if Ice Cream Sandwhich or newer. There's a
* bug on older devices that does not respect the increased margin.
*/
@Override
public void drawLeadingMargin(Canvas c, Paint p, int x, int dir,
int top, int baseline, int bottom, CharSequence text,
int start, int end, boolean first, Layout layout) {
if (IS_ICS) {
Paint.Style style = p.getStyle();
int color = p.getColor();
p.setStyle(Paint.Style.FILL);
p.setColor(STRIPE_COLOR);
c.drawRect(GAP_WIDTH + x, top, x + dir * STRIPE_WIDTH, bottom,
p);
p.setStyle(style);
p.setColor(color);
} else {
super.drawLeadingMargin(c, p, x, dir, top, baseline, bottom,
text, start, end, first, layout);
}
}
}
/**
* Retrieves images for HTML <img> tags.
*/
public static interface ImageGetter {
/**
* This method is called when the HTML parser encounters an <img>
* tag. The <code>source</code> argument is the string from the "src"
* attribute; the return value should be a Drawable representation of
* the image or <code>null</code> for a generic replacement image. Make
* sure you call setBounds() on your Drawable if it doesn't already have
* its bounds set.
*/
public Drawable getDrawable(String source);
}
/**
* Is notified when HTML tags are encountered that the parser does not know
* how to interpret.
*/
public static interface TagHandler {
/**
* This method will be called whenn the HTML parser encounters a tag
* that it does not know how to interpret.
*
* @param mysteryTagContent
*/
public void handleTag(boolean opening, String tag, Editable output,
XMLReader xmlReader, String mysteryTagContent);
}
private WPHtml() {
}
/**
* Returns displayable styled text from the provided HTML string. Any
* <img> tags in the HTML will display as a generic replacement image
* which your program can then go through and replace with real images.
*
* <p>
* This uses TagSoup to handle real HTML, including all of the brokenness
* found in the wild.
*/
public static Spanned fromHtml(String source, Context ctx, Postable p) {
return fromHtml(source, null, null, ctx, p);
}
/**
* Lazy initialization holder for HTML parser. This class will a) be
* preloaded by the zygote, or b) not loaded until absolutely necessary.
*/
private static class HtmlParser {
private static final HTMLSchema schema = new HTMLSchema();
}
/**
* Returns displayable styled text from the provided HTML string. Any
* <img> tags in the HTML will use the specified ImageGetter to
* request a representation of the image (use null if you don't want this)
* and the specified TagHandler to handle unknown tags (specify null if you
* don't want this).
*
* <p>
* This uses TagSoup to handle real HTML, including all of the brokenness
* found in the wild.
*/
public static Spanned fromHtml(String source, ImageGetter imageGetter,
TagHandler tagHandler, Context ctx, Postable post) {
Parser parser = new Parser();
try {
parser.setProperty(Parser.schemaProperty, HtmlParser.schema);
} catch (org.xml.sax.SAXNotRecognizedException e) {
// Should not happen.
throw new RuntimeException(e);
} catch (org.xml.sax.SAXNotSupportedException e) {
// Should not happen.
throw new RuntimeException(e);
}
HtmlToSpannedConverter converter = new HtmlToSpannedConverter(source,
imageGetter, tagHandler, parser, ctx, post);
return converter.convert();
}
/**
* Returns an HTML representation of the provided Spanned text.
*/
public static String toHtml(Spanned text) {
StringBuilder out = new StringBuilder();
withinHtml(out, text);
return out.toString();
}
private static void withinHtml(StringBuilder out, Spanned text) {
int len = text.length();
int next;
for (int i = 0; i < text.length(); i = next) {
next = text.nextSpanTransition(i, len, ParagraphStyle.class);
/*ParagraphStyle[] style = text.getSpans(i, next,
ParagraphStyle.class);
String elements = " ";
boolean needDiv = false;
for (int j = 0; j < style.length; j++) {
if (style[j] instanceof AlignmentSpan) {
Layout.Alignment align = ((AlignmentSpan) style[j])
.getAlignment();
needDiv = true;
if (align == Layout.Alignment.ALIGN_CENTER) {
elements = "align=\"center\" " + elements;
} else if (align == Layout.Alignment.ALIGN_OPPOSITE) {
elements = "align=\"right\" " + elements;
} else {
elements = "align=\"left\" " + elements;
}
}
}
if (needDiv) {
out.append("<div " + elements + ">");
}*/
withinDiv(out, text, i, next);
/*if (needDiv) {
out.append("</div>");
}*/
}
}
@SuppressWarnings("unused")
private static void withinDiv(StringBuilder out, Spanned text, int start,
int end) {
int next;
for (int i = start; i < end; i = next) {
next = text.nextSpanTransition(i, end, QuoteSpan.class);
QuoteSpan[] quotes = text.getSpans(i, next, QuoteSpan.class);
for (QuoteSpan quote : quotes) {
out.append("<blockquote>");
}
withinBlockquote(out, text, i, next);
for (QuoteSpan quote : quotes) {
out.append("</blockquote>\n");
}
}
}
private static void withinBlockquote(StringBuilder out, Spanned text,
int start, int end) {
out.append("<p>");
int next;
for (int i = start; i < end; i = next) {
next = TextUtils.indexOf(text, '\n', i, end);
if (next < 0) {
next = end;
}
int nl = 0;
while (next < end && text.charAt(next) == '\n') {
nl++;
next++;
}
withinParagraph(out, text, i, next - nl, nl, next == end);
}
out.append("</p>\n");
}
private static void withinParagraph(StringBuilder out, Spanned text,
int start, int end, int nl, boolean last) {
int next;
for (int i = start; i < end; i = next) {
next = text.nextSpanTransition(i, end, CharacterStyle.class);
CharacterStyle[] style = text.getSpans(i, next,
CharacterStyle.class);
for (int j = 0; j < style.length; j++) {
if (style[j] instanceof StyleSpan) {
int s = ((StyleSpan) style[j]).getStyle();
if ((s & Typeface.BOLD) != 0) {
out.append("<strong>");
}
if ((s & Typeface.ITALIC) != 0) {
out.append("<em>");
}
}
if (style[j] instanceof TypefaceSpan) {
String s = ((TypefaceSpan) style[j]).getFamily();
if (s.equals("monospace")) {
out.append("<tt>");
}
}
if (style[j] instanceof SuperscriptSpan) {
out.append("<sup>");
}
if (style[j] instanceof SubscriptSpan) {
out.append("<sub>");
}
if (style[j] instanceof WPUnderlineSpan) {
out.append("<u>");
}
if (style[j] instanceof StrikethroughSpan) {
out.append("<strike>");
}
if (style[j] instanceof URLSpan) {
out.append("<a href=\"");
out.append(((URLSpan) style[j]).getURL());
out.append("\">");
}
if (style[j] instanceof ImageSpan) {
out.append("<img src=\"");
out.append(((WPImageSpan) style[j]).getSource());
out.append("\" android-uri=\""
+ ((WPImageSpan) style[j]).getImageSource()
.toString() + "\"");
out.append(" />");
// Don't output the dummy character underlying the image.
i = next;
}
if (style[j] instanceof AbsoluteSizeSpan) {
out.append("<font size =\"");
out.append(((AbsoluteSizeSpan) style[j]).getSize() / 6);
out.append("\">");
}
if (style[j] instanceof ForegroundColorSpan) {
out.append("<font color =\"#");
String color = Integer
.toHexString(((ForegroundColorSpan) style[j])
.getForegroundColor() + 0x01000000);
while (color.length() < 6) {
color = "0" + color;
}
out.append(color);
out.append("\">");
}
}
processWPImage(out, text, i, next);
for (int j = style.length - 1; j >= 0; j--) {
if (style[j] instanceof ForegroundColorSpan) {
out.append("</font>");
}
if (style[j] instanceof AbsoluteSizeSpan) {
out.append("</font>");
}
if (style[j] instanceof URLSpan) {
out.append("</a>");
}
if (style[j] instanceof StrikethroughSpan) {
out.append("</strike>");
}
if (style[j] instanceof WPUnderlineSpan) {
out.append("</u>");
}
if (style[j] instanceof SubscriptSpan) {
out.append("</sub>");
}
if (style[j] instanceof SuperscriptSpan) {
out.append("</sup>");
}
if (style[j] instanceof TypefaceSpan) {
String s = ((TypefaceSpan) style[j]).getFamily();
if (s.equals("monospace")) {
out.append("</tt>");
}
}
if (style[j] instanceof StyleSpan) {
int s = ((StyleSpan) style[j]).getStyle();
if ((s & Typeface.BOLD) != 0) {
out.append("</strong>");
}
if ((s & Typeface.ITALIC) != 0) {
out.append("</em>");
}
}
}
}
String p = last ? "" : "</p>\n<p>";
if (nl == 1) {
out.append("<br>\n");
} else if (nl == 2) {
out.append(p);
} else {
for (int i = 2; i < nl; i++) {
out.append("<br>");
}
out.append(p);
}
}
private static void processWPImage(StringBuilder out, Spanned text,
int start, int end) {
int next;
for (int i = start; i < end; i = next) {
next = text.nextSpanTransition(i, end, SpannableString.class);
SpannableString[] images = text.getSpans(i, next,
SpannableString.class);
for (SpannableString image : images) {
out.append(image.toString());
}
withinStyle(out, text, i, next);
}
}
private static void withinStyle(StringBuilder out, Spanned text, int start,
int end) {
for (int i = start; i < end; i++) {
char c = text.charAt(i);
/*
* if (c == '<') { out.append("<"); } else if (c == '>') {
* out.append(">"); } else if (c == '&') { out.append("&");
* if (c > 0x7E || c < ' ') { out.append("&#" + ((int) c) + ";"); }
* else
*/
if (c == ' ') {
while (i + 1 < end && text.charAt(i + 1) == ' ') {
out.append(" ");
i++;
}
out.append(' ');
} else {
out.append(c);
}
}
}
}
class HtmlToSpannedConverter implements ContentHandler {
private static final float[] HEADER_SIZES = { 1.5f, 1.4f, 1.3f, 1.2f, 1.1f,
1f, };
private String mSource;
private XMLReader mReader;
private SpannableStringBuilder mSpannableStringBuilder;
private WPHtml.ImageGetter mImageGetter;
private String mysteryTagContent;
private boolean mysteryTagFound;
private static Context ctx;
private static Postable post;
private String mysteryTagName;
public HtmlToSpannedConverter(String source,
WPHtml.ImageGetter imageGetter, WPHtml.TagHandler tagHandler,
Parser parser, Context context, Postable p) {
mSource = source;
mSpannableStringBuilder = new SpannableStringBuilder();
mImageGetter = imageGetter;
mReader = parser;
mysteryTagContent = "";
mysteryTagName = null;
ctx = context;
post = p;
}
public Spanned convert() {
mReader.setContentHandler(this);
try {
mReader.parse(new InputSource(new StringReader(mSource)));
} catch (IOException e) {
// We are reading from a string. There should not be IO problems.
throw new RuntimeException(e);
} catch (SAXException e) {
// TagSoup doesn't throw parse exceptions.
throw new RuntimeException(e);
}
// Fix flags and range for paragraph-type markup.
Object[] obj = mSpannableStringBuilder.getSpans(0,
mSpannableStringBuilder.length(), ParagraphStyle.class);
for (int i = 0; i < obj.length; i++) {
int start = mSpannableStringBuilder.getSpanStart(obj[i]);
int end = mSpannableStringBuilder.getSpanEnd(obj[i]);
// If the last line of the range is blank, back off by one.
if (end - 2 >= 0) {
if (mSpannableStringBuilder.charAt(end - 1) == '\n'
&& mSpannableStringBuilder.charAt(end - 2) == '\n') {
end--;
}
}
if (end == start) {
mSpannableStringBuilder.removeSpan(obj[i]);
} else {
try {
mSpannableStringBuilder.setSpan(obj[i], start, end,
Spannable.SPAN_PARAGRAPH);
} catch (Exception e) {
}
}
}
return mSpannableStringBuilder;
}
private void handleStartTag(String tag, Attributes attributes) {
if (!mysteryTagFound) {
if (post != null) {
if (!post.isLocalDraft()) {
if (tag.equalsIgnoreCase("img"))
startImg(mSpannableStringBuilder, attributes,
mImageGetter);
return;
}
}
if (tag.equalsIgnoreCase("br")) {
// We don't need to handle this. TagSoup will ensure that
// there's a
// </br> for each <br>
// so we can safely emite the linebreaks when we handle the
// close
// tag.
} else if (tag.equalsIgnoreCase("p")) {
handleP(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("div")) {
handleP(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("em")) {
start(mSpannableStringBuilder, new Italic());
} else if (tag.equalsIgnoreCase("b")) {
start(mSpannableStringBuilder, new Bold());
} else if (tag.equalsIgnoreCase("strong")) {
start(mSpannableStringBuilder, new Bold());
} else if (tag.equalsIgnoreCase("cite")) {
start(mSpannableStringBuilder, new Italic());
} else if (tag.equalsIgnoreCase("dfn")) {
start(mSpannableStringBuilder, new Italic());
} else if (tag.equalsIgnoreCase("i")) {
start(mSpannableStringBuilder, new Italic());
} else if (tag.equalsIgnoreCase("big")) {
start(mSpannableStringBuilder, new Big());
} else if (tag.equalsIgnoreCase("small")) {
start(mSpannableStringBuilder, new Small());
} else if (tag.equalsIgnoreCase("font")) {
startFont(mSpannableStringBuilder, attributes);
} else if (tag.equalsIgnoreCase("blockquote")) {
handleP(mSpannableStringBuilder);
start(mSpannableStringBuilder, new Blockquote());
} else if (tag.equalsIgnoreCase("tt")) {
start(mSpannableStringBuilder, new Monospace());
} else if (tag.equalsIgnoreCase("a")) {
startA(mSpannableStringBuilder, attributes);
} else if (tag.equalsIgnoreCase("u")) {
start(mSpannableStringBuilder, new Underline());
} else if (tag.equalsIgnoreCase("sup")) {
start(mSpannableStringBuilder, new Super());
} else if (tag.equalsIgnoreCase("sub")) {
start(mSpannableStringBuilder, new Sub());
} else if (tag.equalsIgnoreCase("strike")) {
start(mSpannableStringBuilder, new Strike());
} else if (tag.length() == 2
&& Character.toLowerCase(tag.charAt(0)) == 'h'
&& tag.charAt(1) >= '1' && tag.charAt(1) <= '6') {
handleP(mSpannableStringBuilder);
start(mSpannableStringBuilder, new Header(tag.charAt(1) - '1'));
} else if (tag.equalsIgnoreCase("img")) {
startImg(mSpannableStringBuilder, attributes, mImageGetter);
} else {
if (tag.equalsIgnoreCase("html")
|| tag.equalsIgnoreCase("body")) {
return;
}
mysteryTagFound = true;
mysteryTagName = tag;
}
// mTagHandler.handleTag(true, tag, mSpannableStringBuilder,
// mReader, mysteryTagContent);
}
}
private void handleEndTag(String tag) {
if (post != null) {
if (!post.isLocalDraft())
return;
}
if (!mysteryTagFound) {
if (tag.equalsIgnoreCase("br")) {
handleBr(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("p")) {
handleP(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("div")) {
handleP(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("em")) {
end(mSpannableStringBuilder, Italic.class, new StyleSpan(
Typeface.ITALIC));
} else if (tag.equalsIgnoreCase("b")) {
end(mSpannableStringBuilder, Bold.class, new StyleSpan(
Typeface.BOLD));
} else if (tag.equalsIgnoreCase("strong")) {
end(mSpannableStringBuilder, Bold.class, new StyleSpan(
Typeface.BOLD));
} else if (tag.equalsIgnoreCase("cite")) {
end(mSpannableStringBuilder, Italic.class, new StyleSpan(
Typeface.ITALIC));
} else if (tag.equalsIgnoreCase("dfn")) {
end(mSpannableStringBuilder, Italic.class, new StyleSpan(
Typeface.ITALIC));
} else if (tag.equalsIgnoreCase("i")) {
end(mSpannableStringBuilder, Italic.class, new StyleSpan(
Typeface.ITALIC));
} else if (tag.equalsIgnoreCase("big")) {
end(mSpannableStringBuilder, Big.class, new RelativeSizeSpan(
1.25f));
} else if (tag.equalsIgnoreCase("small")) {
end(mSpannableStringBuilder, Small.class, new RelativeSizeSpan(
0.8f));
} else if (tag.equalsIgnoreCase("font")) {
endFont(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("blockquote")) {
handleP(mSpannableStringBuilder);
end(mSpannableStringBuilder, Blockquote.class, new QuoteSpan());
} else if (tag.equalsIgnoreCase("tt")) {
end(mSpannableStringBuilder, Monospace.class, new TypefaceSpan(
"monospace"));
} else if (tag.equalsIgnoreCase("a")) {
endA(mSpannableStringBuilder);
} else if (tag.equalsIgnoreCase("u")) {
end(mSpannableStringBuilder, Underline.class,
new WPUnderlineSpan());
} else if (tag.equalsIgnoreCase("sup")) {
end(mSpannableStringBuilder, Super.class, new SuperscriptSpan());
} else if (tag.equalsIgnoreCase("sub")) {
end(mSpannableStringBuilder, Sub.class, new SubscriptSpan());
} else if (tag.equalsIgnoreCase("strike")) {
end(mSpannableStringBuilder, Strike.class,
new StrikethroughSpan());
} else if (tag.length() == 2
&& Character.toLowerCase(tag.charAt(0)) == 'h'
&& tag.charAt(1) >= '1' && tag.charAt(1) <= '6') {
handleP(mSpannableStringBuilder);
endHeader(mSpannableStringBuilder);
}
} else {
if (tag.equalsIgnoreCase("html") || tag.equalsIgnoreCase("body")) {
return;
}
if (mysteryTagName.equals(tag)) {
mysteryTagFound = false;
mSpannableStringBuilder.append(mysteryTagContent);
}
// mTagHandler.handleTag(false, tag, mSpannableStringBuilder,
// mReader,
// mysteryTagContent);
}
}
private static void handleP(SpannableStringBuilder text) {
int len = text.length();
if (len >= 1 && text.charAt(len - 1) == '\n') {
if (len >= 2 && text.charAt(len - 2) == '\n') {
return;
}
text.append("\n");
return;
}
if (len != 0) {
text.append("\n\n");
}
}
private static void handleBr(SpannableStringBuilder text) {
text.append("\n");
}
private static Object getLast(Spanned text, Class<?> kind) {
/*
* This knows that the last returned object from getSpans() will be the
* most recently added.
*/
Object[] objs = text.getSpans(0, text.length(), kind);
if (objs.length == 0) {
return null;
} else {
return objs[objs.length - 1];
}
}
private static void start(SpannableStringBuilder text, Object mark) {
int len = text.length();
text.setSpan(mark, len, len, Spannable.SPAN_MARK_MARK);
}
private static void end(SpannableStringBuilder text, Class<?> kind,
Object repl) {
int len = text.length();
Object obj = getLast(text, kind);
int where = text.getSpanStart(obj);
if (where < 0)
where = 0;
text.removeSpan(obj);
if (where != len) {
text.setSpan(repl, where, len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
return;
}
private static void startImg(SpannableStringBuilder text,
Attributes attributes, WPHtml.ImageGetter img) {
String src = attributes.getValue("android-uri");
Bitmap resizedBitmap = null;
Display display = ((WindowManager) ctx
.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
if (width > height)
width = height;
ImageHelper ih = new ImageHelper();
Map<String, Object> mediaData = ih.getImageBytesForPath(src, ctx);
if (mediaData != null) {
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
byte[] bytes = (byte[]) mediaData.get("bytes");
BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opts);
float conversionFactor = 0.25f;
if (opts.outWidth > opts.outHeight)
conversionFactor = 0.40f;
byte[] finalBytes = ih.createThumbnail(
(byte[]) mediaData.get("bytes"),
String.valueOf((int) (width * conversionFactor)),
(String) mediaData.get("orientation"), true);
if (finalBytes == null)
return;
resizedBitmap = BitmapFactory.decodeByteArray(finalBytes, 0,
finalBytes.length);
int len = text.length();
text.append("\uFFFC");
Uri curStream = Uri.parse(src);
if (curStream == null) {
return;
}
WPImageSpan is = new WPImageSpan(ctx, resizedBitmap, curStream);
// get the MediaFile data from db
MediaFile mf = WordPress.wpDB.getMediaFile(src, post.getId());
if (mf != null) {
is.setTitle(mf.getTitle());
is.setDescription(mf.getDescription());
is.setCaption(mf.getCaption());
is.setFeatured(mf.isFeatured());
is.setFeaturedInPost(mf.isFeaturedInPost());
is.setHorizontalAlignment(mf.getHorizontalAlignment());
is.setImageSource(curStream);
is.setWidth(mf.getWidth());
is.setVideo(mf.isVideo());
text.setSpan(is, len, text.length(),
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
AlignmentSpan.Standard as = new AlignmentSpan.Standard(
Layout.Alignment.ALIGN_CENTER);
text.setSpan(as, text.getSpanStart(is), text.getSpanEnd(is),
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
} else if (post != null) {
if (post.isLocalDraft()) {
if (attributes != null) {
text.append("<img");
for (int i = 0; i < attributes.getLength(); i++) {
String aName = attributes.getLocalName(i); // Attr name
if ("".equals(aName))
aName = attributes.getQName(i);
text.append(" ");
text.append(aName + "=\"" + attributes.getValue(i)
+ "\"");
}
text.append(" />\n");
}
}
}
}
private static void startFont(SpannableStringBuilder text,
Attributes attributes) {
String color = attributes.getValue("", "color");
String face = attributes.getValue("", "face");
int len = text.length();
text.setSpan(new Font(color, face), len, len, Spannable.SPAN_MARK_MARK);
}
private static void endFont(SpannableStringBuilder text) {
int len = text.length();
Object obj = getLast(text, Font.class);
int where = text.getSpanStart(obj);
text.removeSpan(obj);
if (where != len) {
Font f = (Font) obj;
if (!TextUtils.isEmpty(f.mColor)) {
if (f.mColor.startsWith("@")) {
Resources res = Resources.getSystem();
String name = f.mColor.substring(1);
int colorRes = res.getIdentifier(name, "color", "android");
if (colorRes != 0) {
ColorStateList colors = res.getColorStateList(colorRes);
text.setSpan(new TextAppearanceSpan(null, 0, 0, colors,
null), where, len,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
} else {
int c = getHtmlColor(f.mColor);
if (c != -1) {
text.setSpan(new ForegroundColorSpan(c | 0xFF000000),
where, len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
if (f.mFace != null) {
text.setSpan(new TypefaceSpan(f.mFace), where, len,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
private static void startA(SpannableStringBuilder text,
Attributes attributes) {
String href = attributes.getValue("", "href");
int len = text.length();
text.setSpan(new Href(href), len, len, Spannable.SPAN_MARK_MARK);
}
private static void endA(SpannableStringBuilder text) {
int len = text.length();
Object obj = getLast(text, Href.class);
int where = text.getSpanStart(obj);
text.removeSpan(obj);
if (where != len) {
Href h = (Href) obj;
if (h != null) {
if (h.mHref != null) {
text.setSpan(new URLSpan(h.mHref), where, len,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
}
private static void endHeader(SpannableStringBuilder text) {
int len = text.length();
Object obj = getLast(text, Header.class);
int where = text.getSpanStart(obj);
text.removeSpan(obj);
// Back off not to change only the text, not the blank line.
while (len > where && text.charAt(len - 1) == '\n') {
len--;
}
if (where != len) {
Header h = (Header) obj;
text.setSpan(new RelativeSizeSpan(HEADER_SIZES[h.mLevel]), where,
len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new StyleSpan(Typeface.BOLD), where, len,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
public void setDocumentLocator(Locator locator) {
}
public void startDocument() throws SAXException {
}
public void endDocument() throws SAXException {
}
public void startPrefixMapping(String prefix, String uri)
throws SAXException {
}
public void endPrefixMapping(String prefix) throws SAXException {
}
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if (!mysteryTagFound) {
mysteryTagContent = "";
}
String eName = localName; // element name
if ("".equals(eName))
eName = qName; // not namespace-aware
mysteryTagContent += "<" + eName;
if (attributes != null) {
for (int i = 0; i < attributes.getLength(); i++) {
String aName = attributes.getLocalName(i); // Attr name
if ("".equals(aName))
aName = attributes.getQName(i);
mysteryTagContent += " ";
mysteryTagContent += aName + "=\"" + attributes.getValue(i)
+ "\"";
}
}
mysteryTagContent += ">";
handleStartTag(localName, attributes);
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (mysteryTagFound) {
mysteryTagContent += "</" + localName + ">" + "\n";
}
handleEndTag(localName);
}
public void characters(char ch[], int start, int length)
throws SAXException {
StringBuilder sb = new StringBuilder();
/*
* Ignore whitespace that immediately follows other whitespace; newlines
* count as spaces.
*/
for (int i = 0; i < length; i++) {
char c = ch[i + start];
if (c == ' ' || c == '\n') {
char pred;
int len = sb.length();
if (len == 0) {
len = mSpannableStringBuilder.length();
if (len == 0) {
pred = '\n';
} else {
pred = mSpannableStringBuilder.charAt(len - 1);
}
} else {
pred = sb.charAt(len - 1);
}
if (pred != ' ' && pred != '\n') {
sb.append(' ');
}
} else {
sb.append(c);
}
}
try {
if (mysteryTagFound) {
if (sb.length() < length)
mysteryTagContent += sb.toString().substring(start,
length - 1);
else
mysteryTagContent += sb.toString().substring(start, length);
} else
mSpannableStringBuilder.append(sb);
} catch (Exception e) {
e.printStackTrace();
}
}
public void ignorableWhitespace(char ch[], int start, int length)
throws SAXException {
}
public void processingInstruction(String target, String data)
throws SAXException {
}
public void skippedEntity(String name) throws SAXException {
}
private static class Bold {
}
private static class Italic {
}
private static class Underline {
}
private static class Big {
}
private static class Small {
}
private static class Monospace {
}
private static class Blockquote {
}
private static class Super {
}
private static class Sub {
}
private static class Strike {
}
private static class Font {
public String mColor;
public String mFace;
public Font(String color, String face) {
mColor = color;
mFace = face;
}
}
private static class Href {
public String mHref;
public Href(String href) {
mHref = href;
}
}
private static class Header {
private int mLevel;
public Header(int level) {
mLevel = level;
}
}
private static HashMap<String, Integer> COLORS = buildColorMap();
private static HashMap<String, Integer> buildColorMap() {
HashMap<String, Integer> map = new HashMap<String, Integer>();
map.put("aqua", 0x00FFFF);
map.put("black", 0x000000);
map.put("blue", 0x0000FF);
map.put("fuchsia", 0xFF00FF);
map.put("green", 0x008000);
map.put("grey", 0x808080);
map.put("lime", 0x00FF00);
map.put("maroon", 0x800000);
map.put("navy", 0x000080);
map.put("olive", 0x808000);
map.put("purple", 0x800080);
map.put("red", 0xFF0000);
map.put("silver", 0xC0C0C0);
map.put("teal", 0x008080);
map.put("white", 0xFFFFFF);
map.put("yellow", 0xFFFF00);
return map;
}
/**
* Converts an HTML color (named or numeric) to an integer RGB value.
*
* @param color
* Non-null color string.
* @return A color value, or {@code -1} if the color string could not be
* interpreted.
*/
private static int getHtmlColor(String color) {
Integer i = COLORS.get(color.toLowerCase());
if (i != null) {
return i;
} else {
try {
return convertValueToInt(color, -1);
} catch (NumberFormatException nfe) {
return -1;
}
}
}
public static final int convertValueToInt(CharSequence charSeq,
int defaultValue) {
if (null == charSeq)
return defaultValue;
String nm = charSeq.toString();
// XXX This code is copied from Integer.decode() so we don't
// have to instantiate an Integer!
int sign = 1;
int index = 0;
int len = nm.length();
int base = 10;
if ('-' == nm.charAt(0)) {
sign = -1;
index++;
}
if ('0' == nm.charAt(index)) {
// Quick check for a zero by itself
if (index == (len - 1))
return 0;
char c = nm.charAt(index + 1);
if ('x' == c || 'X' == c) {
index += 2;
base = 16;
} else {
index++;
base = 8;
}
} else if ('#' == nm.charAt(index)) {
index++;
base = 16;
}
return Integer.parseInt(nm.substring(index), base) * sign;
}
}