/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.gwt.client.ui.input;
import org.opencms.gwt.client.CmsCoreProvider;
import org.opencms.gwt.client.rpc.CmsRpcAction;
import org.opencms.gwt.client.ui.CmsPopup;
import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
import org.opencms.gwt.client.ui.tree.A_CmsLazyOpenHandler;
import org.opencms.gwt.client.ui.tree.CmsLazyTree;
import org.opencms.gwt.client.ui.tree.CmsLazyTreeItem;
import org.opencms.gwt.client.util.I_CmsSimpleCallback;
import org.opencms.gwt.shared.CmsIconUtil;
import org.opencms.gwt.shared.CmsVfsEntryBean;
import java.util.IdentityHashMap;
import java.util.List;
import com.google.gwt.dom.client.Style.Overflow;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.HTML;
/**
* The vfs-selector popup.<p>
*
* @since 8.0.0
*/
public class CmsVfsSelector extends CmsPopup {
/**
* The select click handler.<p>
*/
private class SelectClickHandler implements ClickHandler {
/** The select path. */
private String m_path;
/**
* Constructor.<p>
*
* @param path the path
*/
protected SelectClickHandler(String path) {
m_path = path;
}
/**
* @see com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event.dom.client.ClickEvent)
*/
public void onClick(ClickEvent event) {
onSelect(m_path);
}
}
/** A map from tree items to the corresponding data beans. */
protected IdentityHashMap<CmsLazyTreeItem, CmsVfsEntryBean> m_entryMap;
/** The callback to execute on select. */
protected I_CmsSimpleCallback<String> m_selectCallback;
/** The vfs-tree. */
protected CmsLazyTree<CmsLazyTreeItem> m_tree;
/**
* @see org.opencms.gwt.client.ui.CmsPopup#center()
*/
@Override
public void center() {
if (m_tree == null) {
initContent();
}
adjustMaxHeight();
super.center();
}
/**
* Sets the select callback.<p>
*
* @param callback the callback to set
*/
public void setSelectCallback(I_CmsSimpleCallback<String> callback) {
m_selectCallback = callback;
}
/**
* @see org.opencms.gwt.client.ui.CmsPopup#show()
*/
@Override
public void show() {
if (m_tree == null) {
initContent();
}
super.show();
}
/**
* Creates a vfs-tree entry widget.<p>
*
* @param entry the entry bean
*
* @return the entry widget
*/
protected CmsLazyTreeItem createItem(CmsVfsEntryBean entry) {
String iconStyle = CmsIconUtil.getResourceIconClasses(entry.getResourceType(), entry.getName(), true);
HTML itemWidget = new HTML("<div class=\""
+ iconStyle
+ " "
+ I_CmsLayoutBundle.INSTANCE.generalCss().inlineBlock()
+ "\"></div>"
+ entry.getName());
itemWidget.setStyleName(I_CmsLayoutBundle.INSTANCE.singleLineItemCss().itemFace());
itemWidget.addClickHandler(new SelectClickHandler(entry.getPath()));
CmsLazyTreeItem result = new CmsLazyTreeItem(itemWidget, false);
m_entryMap.put(result, entry);
result.setLeafStyle(!entry.isFolder());
result.addStyleName(I_CmsLayoutBundle.INSTANCE.singleLineItemCss().singleLineItem());
return result;
}
/**
* Execute on select.<p>
*
* @param path the selected path
*/
protected void onSelect(String path) {
m_selectCallback.execute(path);
}
/**
* Clears the contents of the tab and resets the mapping from tree items to VFS beans.<p>
*/
void clearTree() {
if (m_tree != null) {
m_tree.clear();
m_entryMap = new IdentityHashMap<CmsLazyTreeItem, CmsVfsEntryBean>();
}
}
/**
* Adjusts the max-height of the tree.<p>
*/
private void adjustMaxHeight() {
if (m_tree != null) {
int maxHeight = Window.getClientHeight() - 60;
m_tree.getElement().getStyle().setPropertyPx("maxHeight", maxHeight);
}
}
/**
* Initializes the content.<p>
*/
private void initContent() {
m_entryMap = new IdentityHashMap<CmsLazyTreeItem, CmsVfsEntryBean>();
m_tree = new CmsLazyTree<CmsLazyTreeItem>(new A_CmsLazyOpenHandler<CmsLazyTreeItem>() {
/**
* @see org.opencms.gwt.client.ui.tree.I_CmsLazyOpenHandler#load(org.opencms.gwt.client.ui.tree.CmsLazyTreeItem)
*/
public void load(final CmsLazyTreeItem target) {
CmsVfsEntryBean entry = m_entryMap.get(target);
final String path = entry.getPath();
CmsRpcAction<List<CmsVfsEntryBean>> action = new CmsRpcAction<List<CmsVfsEntryBean>>() {
@Override
public void execute() {
start(0, false);
CmsCoreProvider.getVfsService().getChildren(path, this);
}
@Override
protected void onResponse(List<CmsVfsEntryBean> result) {
stop(false);
for (CmsVfsEntryBean childEntry : result) {
CmsLazyTreeItem item = createItem(childEntry);
target.addChild(item);
}
target.onFinishLoading();
center();
}
};
action.execute();
}
});
m_tree.getElement().getStyle().setOverflow(Overflow.AUTO);
add(m_tree);
CmsRpcAction<List<CmsVfsEntryBean>> action = new CmsRpcAction<List<CmsVfsEntryBean>>() {
@Override
public void execute() {
start(0, false);
CmsCoreProvider.getVfsService().getRootEntries(this);
}
@Override
protected void onResponse(List<CmsVfsEntryBean> result) {
stop(false);
for (CmsVfsEntryBean entry : result) {
CmsLazyTreeItem item = createItem(entry);
m_tree.add(item);
}
center();
}
};
action.execute();
}
}