/*
* RmdTemplateChooser.java
*
* Copyright (C) 2009-14 by RStudio, Inc.
*
* Unless you have received this program directly from RStudio pursuant
* to the terms of a commercial license agreement with RStudio, then
* this program is licensed to you under the terms of version 3 of the
* GNU Affero General Public License. This program is distributed WITHOUT
* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
*
*/
package org.rstudio.studio.client.rmarkdown.ui;
import java.util.ArrayList;
import org.rstudio.core.client.resources.CoreResources;
import org.rstudio.core.client.widget.CaptionWithHelp;
import org.rstudio.core.client.widget.DirectoryChooserTextBox;
import org.rstudio.core.client.widget.Operation;
import org.rstudio.core.client.widget.OperationWithInput;
import org.rstudio.core.client.widget.SimplePanelWithProgress;
import org.rstudio.core.client.widget.WidgetListBox;
import org.rstudio.studio.client.RStudioGinjector;
import org.rstudio.studio.client.rmarkdown.RmdTemplateDiscovery;
import org.rstudio.studio.client.rmarkdown.model.RmdChosenTemplate;
import org.rstudio.studio.client.rmarkdown.model.RmdDiscoveredTemplate;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiFactory;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
public class RmdTemplateChooser extends Composite
{
private static RmdTemplateChooserUiBinder uiBinder = GWT
.create(RmdTemplateChooserUiBinder.class);
interface RmdTemplateChooserUiBinder extends
UiBinder<Widget, RmdTemplateChooser>
{
}
public RmdTemplateChooser()
{
initWidget(uiBinder.createAndBindUi(this));
listTemplates_.setItemPadding(2, Unit.PX);
listTemplates_.addChangeHandler(new ChangeHandler()
{
@Override
public void onChange(ChangeEvent evt)
{
// when the template changes, update the check to correspond to the
// template's preference, if any
RmdDiscoveredTemplateItem item = listTemplates_.getSelectedItem();
templateOptionsPanel_.setVisible(
item.getTemplate().getCreateDir().equals("true"));
}
});
}
public void populateTemplates()
{
if (state_ != STATE_EMPTY)
return;
progressPanel_.showProgress(250);
discovery_ = RStudioGinjector.INSTANCE.getRmdTemplateDiscovery();
discovery_.discoverTemplates(
new OperationWithInput<RmdDiscoveredTemplate>()
{
@Override
public void execute(RmdDiscoveredTemplate template)
{
// create a template list item from the template; add it at the
// end if it isn't the user's preferred template
listTemplates_.addItem(new RmdDiscoveredTemplateItem(template),
!template.getPath().equals(
discovery_.getRmdPreferredTemplatePath()));
templates_.add(template);
}
},
new Operation()
{
@Override
public void execute()
{
state_ = STATE_POPULATED;
completeDiscovery();
}
});
state_ = STATE_POPULATING;
}
public RmdChosenTemplate getChosenTemplate()
{
return new RmdChosenTemplate(getSelectedTemplatePath(),
getFileName(),
getDirectory(),
createDirectory());
}
public int getState()
{
return state_;
}
public void setTargetDirectory(String dir)
{
dirLocation_.setText(dir);
}
// UI factory methods ------------------------------------------------------
@UiFactory
public DirectoryChooserTextBox makeDirectoryChooserTextbox()
{
return new DirectoryChooserTextBox("", null);
}
@UiFactory
public CaptionWithHelp makeHelpCaption()
{
return new CaptionWithHelp("Template:", "Using R Markdown Templates",
"using_rmarkdown_templates");
}
@UiFactory
public SimplePanelWithProgress makeProgressPanel()
{
return new SimplePanelWithProgress(new Image(
CoreResources.INSTANCE.progress()), 50);
}
// Private methods ---------------------------------------------------------
private void completeDiscovery()
{
if (listTemplates_.getItemCount() == 0)
{
// no templates found -- hide UI and show message
progressPanel_.setVisible(false);
noTemplatesFound_.setVisible(true);
txtName_.setEnabled(false);
dirLocation_.setEnabled(false);
}
else
{
// templates found -- enable creation UI
progressPanel_.setWidget(listTemplates_);
templateOptionsPanel_.setVisible(true);
RmdDiscoveredTemplate template =
listTemplates_.getItemAtIdx(0).getTemplate();
if (template != null)
{
templateOptionsPanel_.setVisible(
template.getCreateDir().equals("true"));
}
}
}
private String getSelectedTemplatePath()
{
RmdDiscoveredTemplateItem item = listTemplates_.getSelectedItem();
if (item != null)
return item.getTemplate().getPath();
return null;
}
private String getFileName()
{
return txtName_.getText();
}
private String getDirectory()
{
return dirLocation_.getText();
}
private boolean createDirectory()
{
RmdDiscoveredTemplateItem item = listTemplates_.getSelectedItem();
if (item != null)
return item.getTemplate().getCreateDir().equals("true");
return false;
}
private RmdTemplateDiscovery discovery_;
private int state_;
private ArrayList<RmdDiscoveredTemplate> templates_ =
new ArrayList<RmdDiscoveredTemplate>();
@UiField WidgetListBox<RmdDiscoveredTemplateItem> listTemplates_;
@UiField TextBox txtName_;
@UiField DirectoryChooserTextBox dirLocation_;
@UiField HTMLPanel noTemplatesFound_;
@UiField HTMLPanel templateOptionsPanel_;
@UiField SimplePanelWithProgress progressPanel_;
public final static int STATE_EMPTY = 0;
public final static int STATE_POPULATING = 1;
public final static int STATE_POPULATED = 2;
}