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/*
* Copyright 2000-2014 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 com.intellij.ide.scratch;
import com.intellij.lang.DependentLanguage;
import com.intellij.lang.InjectableLanguage;
import com.intellij.lang.Language;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.OpenFileDescriptor;
import com.intellij.openapi.fileTypes.LanguageFileType;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.popup.JBPopupFactory;
import com.intellij.openapi.ui.popup.ListPopup;
import com.intellij.openapi.ui.popup.PopupStep;
import com.intellij.openapi.ui.popup.util.BaseListPopupStep;
import com.intellij.openapi.util.Condition;
import com.intellij.openapi.util.registry.Registry;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.containers.ContainerUtilRt;
import com.intellij.util.ui.EmptyIcon;
import org.jetbrains.annotations.NotNull;
import javax.swing.*;
import java.awt.*;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
/**
* @author ignatov
*/
public class CreateScratchFileAction extends AnAction implements DumbAware {
public static final int MAX_VISIBLE_SIZE = 20;
public CreateScratchFileAction() {
super("Create Scratch File...", "New Scratch File", null);
}
@Override
public void update(AnActionEvent e) {
e.getPresentation().setEnabledAndVisible(e.getProject() != null && Registry.is("ide.scratch.enabled"));
}
@Override
public void actionPerformed(AnActionEvent e) {
final Project project = e.getProject();
if (project == null) return;
List<Language> languages = getLanguages();
if (languages.isEmpty()) return;
BaseListPopupStep<Language> step =
new BaseListPopupStep<Language>("Specify the language", languages) {
@NotNull
@Override
public String getTextFor(Language value) {
return value.getDisplayName();
}
@Override
public String getIndexedString(Language value) {
return value.getDisplayName();
}
@Override
public boolean isSpeedSearchEnabled() {
return true;
}
@Override
public PopupStep onChosen(Language selectedValue, boolean finalChoice) {
doAction(project, selectedValue);
return null;
}
@Override
public Icon getIconFor(Language language) {
LanguageFileType associatedLanguage = language.getAssociatedFileType();
return associatedLanguage != null ? associatedLanguage.getIcon() : null;
}
};
Language previous = ScratchpadManager.getInstance(project).getLatestLanguage();
final String previousName = previous != null ? previous.getDisplayName() : "Plain text";
if (previousName != null) {
int defaultOption = ContainerUtil.indexOf(languages, new Condition<Language>() {
@Override
public boolean value(Language module) {
return module.getDisplayName().equals(previousName);
}
});
if (defaultOption >= 0) {
step.setDefaultOptionIndex(defaultOption);
}
}
ListPopup popup = updatePopupSize(JBPopupFactory.getInstance().createListPopup(step), languages);
popup.showCenteredInCurrentWindow(project);
}
@NotNull
public static ListPopup updatePopupSize(@NotNull ListPopup popup, @NotNull List<Language> languages) {
int nameLen = 0;
for (Language language : languages) {
nameLen = Math.max(nameLen, language.getDisplayName().length());
}
if (languages.size() > MAX_VISIBLE_SIZE) {
Dimension size = new JLabel(StringUtil.repeatSymbol('a', nameLen), EmptyIcon.ICON_16, SwingConstants.LEFT).getMinimumSize();
size.height *= MAX_VISIBLE_SIZE;
popup.setSize(size);
}
return popup;
}
public static void doAction(@NotNull Project project, @NotNull Language language) {
VirtualFile file = ScratchpadManager.getInstance(project).createScratchFile(language);
OpenFileDescriptor descriptor = new OpenFileDescriptor(project, file);
FileEditorManager.getInstance(project).openTextEditor(descriptor, true);
}
@NotNull
public static List<Language> getLanguages() {
Set<Language> result = ContainerUtilRt.newTreeSet(new Comparator<Language>() {
@Override
public int compare(@NotNull Language l1, @NotNull Language l2) {
return l1.getDisplayName().compareTo(l2.getDisplayName());
}
});
for (Language lang : Language.getRegisteredLanguages()) {
if (!StringUtil.isEmpty(lang.getDisplayName())) result.add(lang);
for (Language dialect : lang.getDialects()) result.add(dialect);
}
return ContainerUtil.filter(result, new Condition<Language>() {
@Override
public boolean value(Language lang) {
if (lang instanceof DependentLanguage || lang instanceof InjectableLanguage) return false;
LanguageFileType type = lang.getAssociatedFileType();
if (type == null) return false;
String name = lang.getDisplayName();
if (StringUtil.startsWith(name, "<") || StringUtil.startsWith(name, "[") || StringUtil.isEmpty(name)) return false;
return !StringUtil.isEmpty(type.getDefaultExtension());
}
});
}
}
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