DefaultStyledDocument.java [plain text]
package javax.swing.text;
import java.awt.Color;
import java.awt.Font;
import java.io.Serializable;
public class DefaultStyledDocument extends AbstractDocument
implements StyledDocument
{
public class ElementBuffer
implements Serializable
{
private Element root;
public ElementBuffer(Element root)
{
this.root = root;
}
public Element getRootElement()
{
return root;
}
}
public static final int BUFFER_SIZE_DEFAULT = 4096;
protected DefaultStyledDocument.ElementBuffer buffer;
public DefaultStyledDocument()
{
this(new GapContent(BUFFER_SIZE_DEFAULT), new StyleContext());
}
public DefaultStyledDocument(StyleContext context)
{
this(new GapContent(BUFFER_SIZE_DEFAULT), context);
}
public DefaultStyledDocument(AbstractDocument.Content content,
StyleContext context)
{
super(content, context);
buffer = new ElementBuffer(createDefaultRoot());
setLogicalStyle(0, context.getStyle(StyleContext.DEFAULT_STYLE));
}
public Style addStyle(String nm, Style parent)
{
StyleContext context = (StyleContext) getAttributeContext();
return context.addStyle(nm, parent);
}
protected AbstractDocument.AbstractElement createDefaultRoot()
{
Element[] tmp;
BranchElement section = new BranchElement(null, null);
BranchElement paragraph = new BranchElement(section, null);
tmp = new Element[1];
tmp[0] = paragraph;
section.replace(0, 0, tmp);
LeafElement leaf = new LeafElement(paragraph, null, 0, 1);
tmp = new Element[1];
tmp[0] = leaf;
paragraph.replace(0, 0, tmp);
return section;
}
public Element getCharacterElement(int position)
{
Element element = getDefaultRootElement();
while (! element.isLeaf())
{
int index = element.getElementIndex(position);
element = element.getElement(index);
}
return element;
}
public Color getBackground(AttributeSet attributes)
{
StyleContext context = (StyleContext) getAttributeContext();
return context.getBackground(attributes);
}
public Element getDefaultRootElement()
{
return buffer.getRootElement();
}
public Font getFont(AttributeSet attributes)
{
StyleContext context = (StyleContext) getAttributeContext();
return context.getFont(attributes);
}
public Color getForeground(AttributeSet attributes)
{
StyleContext context = (StyleContext) getAttributeContext();
return context.getForeground(attributes);
}
public Style getLogicalStyle(int position)
{
Element paragraph = getParagraphElement(position);
AttributeSet attributes = paragraph.getAttributes();
return (Style) attributes.getResolveParent();
}
public Element getParagraphElement(int position)
{
Element element = getCharacterElement(position);
return element.getParentElement();
}
public Style getStyle(String nm)
{
StyleContext context = (StyleContext) getAttributeContext();
return context.getStyle(nm);
}
public void removeStyle(String nm)
{
StyleContext context = (StyleContext) getAttributeContext();
context.removeStyle(nm);
}
public void setCharacterAttributes(int offset, int length,
AttributeSet attributes,
boolean replace)
{
throw new Error("not implemented");
}
public void setLogicalStyle(int position, Style style)
{
throw new Error("not implemented");
}
public void setParagraphAttributes(int offset, int length,
AttributeSet attributes,
boolean replace)
{
throw new Error("not implemented");
}
}