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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.zmlx.hg4idea.status.ui;
import com.intellij.dvcs.DvcsUtil;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.FileEditorManagerEvent;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.popup.ListPopup;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.wm.StatusBarWidget;
import com.intellij.openapi.wm.impl.status.EditorBasedWidget;
import com.intellij.util.Consumer;
import com.intellij.util.messages.MessageBusConnection;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.zmlx.hg4idea.HgProjectSettings;
import org.zmlx.hg4idea.HgUpdater;
import org.zmlx.hg4idea.HgVcs;
import org.zmlx.hg4idea.branch.HgBranchPopup;
import org.zmlx.hg4idea.repo.HgRepository;
import org.zmlx.hg4idea.util.HgUtil;
import java.awt.event.MouseEvent;
/**
* Widget to display basic hg status in the IJ status bar.
*/
public class HgStatusWidget extends EditorBasedWidget
implements StatusBarWidget.MultipleTextValuesPresentation,
StatusBarWidget.Multiframe, HgUpdater {
private static final String MAX_STRING = "Hg: Merging default ";
@NotNull private final HgVcs myVcs;
@NotNull private final HgProjectSettings myProjectSettings;
private volatile String myText = "";
private volatile String myTooltip = "";
public HgStatusWidget(@NotNull HgVcs vcs, @NotNull Project project, @NotNull HgProjectSettings projectSettings) {
super(project);
myVcs = vcs;
myProjectSettings = projectSettings;
}
@Override
public StatusBarWidget copy() {
return new HgStatusWidget(myVcs, getProject(), myProjectSettings);
}
@NotNull
@Override
public String ID() {
return HgStatusWidget.class.getName();
}
@Override
public WidgetPresentation getPresentation(@NotNull PlatformType type) {
return this;
}
@Override
public void selectionChanged(@NotNull FileEditorManagerEvent event) {
update();
}
@Override
public void fileOpened(@NotNull FileEditorManager source, @NotNull VirtualFile file) {
update();
}
@Override
public void fileClosed(@NotNull FileEditorManager source, @NotNull VirtualFile file) {
update();
}
@Override
public ListPopup getPopupStep() {
Project project = getProject();
if (project == null) {
return null;
}
VirtualFile root = HgUtil.getRootForSelectedFile(project);
HgRepository repository = HgUtil.getRepositoryManager(project).getRepositoryForRoot(root);
if (repository != null) {
return HgBranchPopup.getInstance(project, repository).asListPopup();
}
return null;
}
@Override
public String getSelectedValue() {
final String text = myText;
return StringUtil.isEmpty(text) ? "" : "hg: " + text;
}
@NotNull
@Override
@Deprecated
public String getMaxValue() {
return MAX_STRING;
}
@Override
public String getTooltipText() {
return myTooltip;
}
@Override
// Updates branch information on click
public Consumer<MouseEvent> getClickConsumer() {
return new Consumer<MouseEvent>() {
public void consume(MouseEvent mouseEvent) {
update();
}
};
}
@Override
public void update(final Project project, @Nullable VirtualFile root) {
update();
}
public void update(final Project project) {
UIUtil.invokeLaterIfNeeded(new Runnable() {
@Override
public void run() {
if ((project == null) || project.isDisposed()) {
emptyTextAndTooltip();
return;
}
final HgRepository repo = HgUtil.getCurrentRepository(project);
if (repo == null) { // the file is not under version control => display nothing
emptyTextAndTooltip();
return;
}
myTooltip = HgUtil.getDisplayableBranchOrBookmarkText(repo);
myText = StringUtil.shortenTextWithEllipsis(myTooltip, MAX_STRING.length(), 5);
if (!isDisposed() && myStatusBar != null) {
myStatusBar.updateWidget(ID());
}
}
});
}
public void activate() {
Project project = getProject();
if (null == project) {
return;
}
MessageBusConnection busConnection = project.getMessageBus().connect();
busConnection.subscribe(HgVcs.STATUS_TOPIC, this);
busConnection.subscribe(HgVcs.BRANCH_TOPIC,this);
DvcsUtil.installStatusBarWidget(myProject, this);
}
public void deactivate() {
if (isDisposed()) return;
DvcsUtil.removeStatusBarWidget(myProject, this);
}
private void update() {
update(getProject());
}
public void dispose() {
deactivate();
super.dispose();
}
private void emptyTextAndTooltip() {
myText = "";
myTooltip = "";
}
}
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