package org.xhtmlrenderer.simple.xhtml.swt;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xhtmlrenderer.extend.ReplacedElement;
import org.xhtmlrenderer.extend.UserAgentCallback;
import org.xhtmlrenderer.layout.LayoutContext;
import org.xhtmlrenderer.render.BlockBox;
import org.xhtmlrenderer.simple.xhtml.FormControl;
import org.xhtmlrenderer.simple.xhtml.XhtmlForm;
import org.xhtmlrenderer.simple.xhtml.XhtmlNamespaceHandler;
import org.xhtmlrenderer.simple.xhtml.controls.ButtonControl;
import org.xhtmlrenderer.simple.xhtml.controls.CheckControl;
import org.xhtmlrenderer.simple.xhtml.controls.SelectControl;
import org.xhtmlrenderer.simple.xhtml.controls.TextControl;
import org.xhtmlrenderer.swt.BasicRenderer;
import org.xhtmlrenderer.swt.FormControlReplacementElement;
import org.xhtmlrenderer.swt.SWTReplacedElementFactory;
public class SWTXhtmlReplacedElementFactory extends SWTReplacedElementFactory {
private final BasicRenderer _parent;
private Map _forms = new HashMap();
private Map _controls = null;
public SWTXhtmlReplacedElementFactory(BasicRenderer parent) {
_parent = parent;
}
/**
* @param e
* @return the form corresponding to element <code>e</code> or
* <code>null</code> if none
*/
public XhtmlForm getForm(Element e) {
return (XhtmlForm) _forms.get(e);
}
public ReplacedElement createReplacedElement(LayoutContext c, BlockBox box,
UserAgentCallback uac, int cssWidth, int cssHeight) {
ReplacedElement re = super.createReplacedElement(c, box, uac, cssWidth,
cssHeight);
if (re == null
&& c.getNamespaceHandler() instanceof XhtmlNamespaceHandler
&& !c.isPrint()) {
XhtmlNamespaceHandler nsh = (XhtmlNamespaceHandler) c
.getNamespaceHandler();
Element e = box.getElement();
if (e == null) {
return null;
}
// form controls
// first check if the control already exists
if (_controls != null) {
re = (ReplacedElement) _controls.get(e);
}
if (re != null) {
if (re instanceof FormControlReplacementElement) {
// update the size
((FormControlReplacementElement) re).calculateSize(c, box
.getStyle(), cssWidth, cssHeight);
}
return re;
}
// not found, try to create one
Element parentForm = getParentForm(e, c);
// parentForm may be null, this is not a problem
XhtmlForm form = (XhtmlForm) _forms.get(parentForm);
if (form == null) {
form = nsh.createForm(parentForm);
_forms.put(parentForm, form);
}
FormControl control = form.createControl(e);
if (control == null) {
// this is not a form control
return null;
}
SWTFormControl swtControl = null;
if (control instanceof TextControl) {
swtControl = new SWTTextControl(control, _parent, c, box
.getStyle(), uac);
} else if (control instanceof ButtonControl) {
swtControl = new SWTButtonControl(control, _parent, c, box
.getStyle(), uac);
} else if (control instanceof CheckControl) {
swtControl = new SWTCheckControl(control, _parent, c, box
.getStyle(), uac);
} else if (control instanceof SelectControl) {
swtControl = new SWTSelectControl(control, _parent, c, box
.getStyle(), uac);
} else {
// no replacement found
return null;
}
swtControl.getSWTControl().setVisible(false);
FormControlReplacementElement fcre = new FormControlReplacementElement(
swtControl);
fcre.calculateSize(c, box.getStyle(), cssWidth, cssHeight);
re = fcre;
if (_controls == null) {
_controls = new HashMap();
}
_controls.put(e, re);
}
return re;
}
public void remove(Element e) {
super.remove(e);
if (_controls != null) {
ReplacedElement re = (ReplacedElement) _controls.get(e);
if (re instanceof FormControlReplacementElement) {
SWTFormControl control = ((FormControlReplacementElement) re)
.getControl();
if (control != null) {
control.dispose();
}
}
_controls.remove(e);
}
}
public void reset() {
super.reset();
_forms = new HashMap();
if (_controls != null) {
for (Iterator iter = _controls.values().iterator(); iter.hasNext();) {
ReplacedElement re = (ReplacedElement) iter.next();
if (re instanceof FormControlReplacementElement) {
SWTFormControl control = ((FormControlReplacementElement) re)
.getControl();
if (control != null) {
control.dispose();
}
}
}
_controls = null;
}
}
/**
* @param e
*/
protected Element getParentForm(Element e, LayoutContext context) {
Node node = e;
XhtmlNamespaceHandler nsh = (XhtmlNamespaceHandler) context
.getNamespaceHandler();
do {
node = node.getParentNode();
} while (node.getNodeType() == Node.ELEMENT_NODE
&& !nsh.isFormElement((Element) node));
if (node.getNodeType() != Node.ELEMENT_NODE) {
return null;
}
return (Element) node;
}
}