/*
* BranchToolbarButton.java
*
* Copyright (C) 2009-12 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.workbench.views.vcs;
import com.google.gwt.core.client.JsArrayString;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.HasValueChangeHandlers;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.rstudio.core.client.MapUtil;
import org.rstudio.core.client.StringUtil;
import org.rstudio.core.client.WidgetHandlerRegistration;
import org.rstudio.core.client.js.JsUtil;
import org.rstudio.core.client.theme.res.ThemeStyles;
import org.rstudio.core.client.widget.CustomMenuItemSeparator;
import org.rstudio.core.client.widget.ScrollableToolbarPopupMenu;
import org.rstudio.core.client.widget.ToolbarButton;
import org.rstudio.core.client.widget.ToolbarPopupMenu;
import org.rstudio.studio.client.common.icons.StandardIcons;
import org.rstudio.studio.client.workbench.views.vcs.common.events.VcsRefreshEvent;
import org.rstudio.studio.client.workbench.views.vcs.common.events.VcsRefreshHandler;
import org.rstudio.studio.client.workbench.views.vcs.git.model.GitState;
public class BranchToolbarButton extends ToolbarButton
implements HasValueChangeHandlers<String>,
VcsRefreshHandler
{
protected class SwitchBranchCommand implements Command
{
public SwitchBranchCommand(String branchLabel, String branchValue)
{
branchLabel_ = branchLabel;
branchValue_ = branchValue;
}
@Override
public void execute()
{
setBranchCaption(branchLabel_);
ValueChangeEvent.fire(BranchToolbarButton.this, branchValue_);
}
private final String branchLabel_;
private final String branchValue_;
}
@Inject
public BranchToolbarButton(final Provider<GitState> pVcsState)
{
super("",
StandardIcons.INSTANCE.empty_command(),
new ScrollableToolbarPopupMenu());
pVcsState_ = pVcsState;
setTitle("Switch branch");
new WidgetHandlerRegistration(this)
{
@Override
protected HandlerRegistration doRegister()
{
return pVcsState.get().addVcsRefreshHandler(
BranchToolbarButton.this, true);
}
};
}
public void setBranchCaption(String caption)
{
if (StringUtil.isNullOrEmpty(caption))
caption = NO_BRANCH;
setText(caption);
}
@Override
public HandlerRegistration addValueChangeHandler(ValueChangeHandler<String> handler)
{
return addHandler(handler, ValueChangeEvent.getType());
}
@Override
public void onVcsRefresh(VcsRefreshEvent event)
{
ToolbarPopupMenu rootMenu = getMenu();
rootMenu.setAutoHideRedundantSeparators(false);
rootMenu.clearItems();
JsArrayString branches = pVcsState_.get().getBranchInfo().getBranches();
// separate branches based on remote name
Map<String, List<String>> branchMap = new LinkedHashMap<String, List<String>>();
List<String> localBranches = new ArrayList<String>();
branchMap.put(LOCAL_BRANCHES, localBranches);
for (String branch : JsUtil.asIterable(branches))
{
if (branch.startsWith("remotes/"))
{
JsArrayString parts = StringUtil.split(branch, "/");
if (parts.length() > 2)
{
String remote = parts.get(1);
if (!branchMap.containsKey(remote))
branchMap.put(remote, new ArrayList<String>());
List<String> remoteBranches = branchMap.get(remote);
remoteBranches.add(branch);
}
}
else
{
localBranches.add(branch);
}
}
onBeforePopulateMenu(rootMenu);
populateMenu(rootMenu, branchMap);
}
private void populateMenu(final ToolbarPopupMenu menu, final Map<String, List<String>> branchMap)
{
MapUtil.forEach(branchMap, new MapUtil.ForEachCommand<String, List<String>>()
{
@Override
public void execute(final String caption, final List<String> branches)
{
// place commonly-used branches at the top
Collections.sort(branches, new Comparator<String>()
{
private final String[] specialBranches_ = new String[] {
"master",
"develop",
"trunk"
};
@Override
public int compare(String o1, String o2)
{
for (String specialBranch : specialBranches_)
{
if (o1.endsWith(specialBranch))
return -1;
else if (o2.endsWith(specialBranch))
return 1;
}
return o1.compareToIgnoreCase(o2);
}
});
menu.addSeparator(new CustomMenuItemSeparator()
{
@Override
public Widget createMainWidget()
{
String branchLabel = caption.equals(LOCAL_BRANCHES)
? LOCAL_BRANCHES
: "(Remote: " + caption + ")";
Label label = new Label(branchLabel);
label.addStyleName(ThemeStyles.INSTANCE.menuSubheader());
label.getElement().getStyle().setPaddingLeft(2, Unit.PX);
return label;
}
});
menu.addSeparator();
for (String branch : branches)
{
// skip detached branches
if (branch.contains("HEAD detached at"))
continue;
// skip HEAD branches
if (branch.contains("HEAD ->"))
continue;
// construct branch label without remotes prefix
final String branchLabel = branch.replaceAll("^remotes/" + caption + "/", "");
final String branchValue = branch.replaceAll("\\s+\\-\\>.*", "");
menu.addItem(new MenuItem(
branchLabel,
new SwitchBranchCommand(branchLabel, branchValue)));
}
}
});
}
protected void onBeforePopulateMenu(ToolbarPopupMenu rootMenu)
{
}
protected final Provider<GitState> pVcsState_;
private static final String NO_BRANCH = "(No branch)";
private static final String LOCAL_BRANCHES = "(local branches)";
}