/**
* Add an attribute only if it doesn't exist so that we don't loose information replacing it with
* SimpleAttributeSet.EMPTY
*/
private static void addAttribute(MutableAttributeSet to, Object key, Object value) {
Object attr = to.getAttribute(key);
if (attr == null || attr == SimpleAttributeSet.EMPTY) {
to.addAttribute(key, value);
} else {
if (attr instanceof MutableAttributeSet && value instanceof AttributeSet) {
((MutableAttributeSet) attr).addAttributes((AttributeSet) value);
}
}
}
/**
* Change the size of this image. This alters the HEIGHT and WIDTH attributes of the Element and
* causes a re-layout.
*/
protected void resize(int width, int height) {
if (width == fWidth && height == fHeight) return;
fWidth = width;
fHeight = height;
// Replace attributes in document:
MutableAttributeSet attr = new SimpleAttributeSet();
attr.addAttribute(HTML.Attribute.WIDTH, Integer.toString(width));
attr.addAttribute(HTML.Attribute.HEIGHT, Integer.toString(height));
((StyledDocument) getDocument())
.setCharacterAttributes(fElement.getStartOffset(), fElement.getEndOffset(), attr, false);
}
/**
* Copies the given AttributeSet to a new set, converting any CSS attributes found to arguments of
* an HTML style attribute.
*/
private static void convertToHTML40(AttributeSet from, MutableAttributeSet to) {
Enumeration keys = from.getAttributeNames();
String value = "";
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
if (key instanceof CSS.Attribute) {
value = value + " " + key + "=" + from.getAttribute(key) + ";";
} else {
to.addAttribute(key, from.getAttribute(key));
}
}
if (value.length() > 0) {
to.addAttribute(HTML.Attribute.STYLE, value);
}
}
/**
* Convert the give set of attributes to be html for the purpose of writing them out. Any keys
* that have been converted will not appear in the resultant set. Any keys not converted will
* appear in the resultant set the same as the received set.
*
* <p>This will put the converted values into <code>to</code>, unless it is null in which case a
* temporary AttributeSet will be returned.
*/
AttributeSet convertToHTML(AttributeSet from, MutableAttributeSet to) {
if (to == null) {
to = convAttr;
}
to.removeAttributes(to);
if (writeCSS) {
convertToHTML40(from, to);
} else {
convertToHTML32(from, to);
}
return to;
}
@Override
public void handleStartTag(HTML.Tag tag, MutableAttributeSet attr, int pos) {
// <B>が出たら次の地の文はカテゴリ名。なのでフラグを立てる。
if (tag.equals(HTML.Tag.B)) {
start_bold = true;
start_category_flag = true;
}
// <A>タグが出たらurlを保持。あとで板名とペアにする。
if (tag.equals(HTML.Tag.A)) {
// 頭についてる広告タグは無視。
if (parse_2ch_start_flag) {
String href = (String) attr.getAttribute(HTML.Attribute.HREF);
next_board_url = href;
}
}
}
/**
* Create/update an HTML <font> tag attribute. The value of the attribute should be a
* MutableAttributeSet so that the attributes can be updated as they are discovered.
*/
private static void createFontAttribute(
CSS.Attribute a, AttributeSet from, MutableAttributeSet to) {
MutableAttributeSet fontAttr = (MutableAttributeSet) to.getAttribute(HTML.Tag.FONT);
if (fontAttr == null) {
fontAttr = new SimpleAttributeSet();
to.addAttribute(HTML.Tag.FONT, fontAttr);
}
// edit the parameters to the font tag
String htmlValue = from.getAttribute(a).toString();
if (a == CSS.Attribute.FONT_FAMILY) {
fontAttr.addAttribute(HTML.Attribute.FACE, htmlValue);
} else if (a == CSS.Attribute.FONT_SIZE) {
fontAttr.addAttribute(HTML.Attribute.SIZE, htmlValue);
} else if (a == CSS.Attribute.COLOR) {
fontAttr.addAttribute(HTML.Attribute.COLOR, htmlValue);
}
}
/**
* Create an older style of HTML attributes. This will convert character level attributes that
* have a StyleConstants mapping over to an HTML tag/attribute. Other CSS attributes will be
* placed in an HTML style attribute.
*/
private static void convertToHTML32(AttributeSet from, MutableAttributeSet to) {
if (from == null) {
return;
}
Enumeration keys = from.getAttributeNames();
String value = "";
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
if (key instanceof CSS.Attribute) {
if ((key == CSS.Attribute.FONT_FAMILY)
|| (key == CSS.Attribute.FONT_SIZE)
|| (key == CSS.Attribute.COLOR)) {
createFontAttribute((CSS.Attribute) key, from, to);
} else if (key == CSS.Attribute.FONT_WEIGHT) {
// add a bold tag is weight is bold
CSS.FontWeight weightValue =
(CSS.FontWeight) from.getAttribute(CSS.Attribute.FONT_WEIGHT);
if ((weightValue != null) && (weightValue.getValue() > 400)) {
addAttribute(to, HTML.Tag.B, SimpleAttributeSet.EMPTY);
}
} else if (key == CSS.Attribute.FONT_STYLE) {
String s = from.getAttribute(key).toString();
if (s.indexOf("italic") >= 0) {
addAttribute(to, HTML.Tag.I, SimpleAttributeSet.EMPTY);
}
} else if (key == CSS.Attribute.TEXT_DECORATION) {
String decor = from.getAttribute(key).toString();
if (decor.indexOf("underline") >= 0) {
addAttribute(to, HTML.Tag.U, SimpleAttributeSet.EMPTY);
}
if (decor.indexOf("line-through") >= 0) {
addAttribute(to, HTML.Tag.STRIKE, SimpleAttributeSet.EMPTY);
}
} else if (key == CSS.Attribute.VERTICAL_ALIGN) {
String vAlign = from.getAttribute(key).toString();
if (vAlign.indexOf("sup") >= 0) {
addAttribute(to, HTML.Tag.SUP, SimpleAttributeSet.EMPTY);
}
if (vAlign.indexOf("sub") >= 0) {
addAttribute(to, HTML.Tag.SUB, SimpleAttributeSet.EMPTY);
}
} else if (key == CSS.Attribute.TEXT_ALIGN) {
addAttribute(to, HTML.Attribute.ALIGN, from.getAttribute(key).toString());
} else {
// default is to store in a HTML style attribute
if (value.length() > 0) {
value = value + "; ";
}
value = value + key + ": " + from.getAttribute(key);
}
} else {
Object attr = from.getAttribute(key);
if (attr instanceof AttributeSet) {
attr = ((AttributeSet) attr).copyAttributes();
}
addAttribute(to, key, attr);
}
}
if (value.length() > 0) {
to.addAttribute(HTML.Attribute.STYLE, value);
}
}