package org.editorconfig.configmanagement;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileEditor.FileDocumentManagerAdapter;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.FileEditorManagerEvent;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.wm.IdeFrame;
import com.intellij.openapi.wm.StatusBar;
import com.intellij.openapi.wm.StatusBarWidget;
import com.intellij.openapi.wm.WindowManager;
import com.intellij.openapi.wm.impl.status.LineSeparatorPanel;
import com.intellij.util.LineSeparator;
import org.editorconfig.Utils;
import org.editorconfig.core.EditorConfig;
import org.editorconfig.plugincomponents.SettingsProviderComponent;
import org.jetbrains.annotations.NotNull;
import java.util.List;
import java.util.Locale;
/**
* @author Dennis.Ushakov
*/
public class LineEndingsManager extends FileDocumentManagerAdapter {
// Handles the following EditorConfig settings:
private static final String lineEndingsKey = "end_of_line";
private final Logger LOG = Logger.getInstance("#org.editorconfig.codestylesettings.LineEndingsManager");
private final Project project;
private boolean statusBarUpdated = false;
public LineEndingsManager(Project project) {
this.project = project;
}
@Override
public void beforeAllDocumentsSaving() {
statusBarUpdated = false;
}
private void updateStatusBar() {
ApplicationManager.getApplication().invokeLater(new Runnable() {
@Override
public void run() {
IdeFrame frame = WindowManager.getInstance().getIdeFrame(project);
StatusBar statusBar = frame.getStatusBar();
StatusBarWidget widget = statusBar != null ? statusBar.getWidget("LineSeparator") : null;
if (widget instanceof LineSeparatorPanel) {
FileEditorManagerEvent event = new FileEditorManagerEvent(FileEditorManager.getInstance(project),
null, null, null, null);
((LineSeparatorPanel)widget).selectionChanged(event);
}
}
});
}
@Override
public void beforeDocumentSaving(@NotNull Document document) {
VirtualFile file = FileDocumentManager.getInstance().getFile(document);
applySettings(file);
}
private void applySettings(VirtualFile file) {
if (file == null || !file.isInLocalFileSystem()) return;
final String filePath = file.getCanonicalPath();
final List<EditorConfig.OutPair> outPairs = SettingsProviderComponent.getInstance().getOutPairs(filePath);
final String lineEndings = Utils.configValueForKey(outPairs, lineEndingsKey);
if (!lineEndings.isEmpty()) {
try {
LineSeparator separator = LineSeparator.valueOf(lineEndings.toUpperCase(Locale.US));
String oldSeparator = file.getDetectedLineSeparator();
String newSeparator = separator.getSeparatorString();
if (!StringUtil.equals(oldSeparator, newSeparator)) {
file.setDetectedLineSeparator(newSeparator);
if (!statusBarUpdated) {
statusBarUpdated = true;
updateStatusBar();
}
LOG.debug(Utils.appliedConfigMessage(lineEndings, lineEndingsKey, filePath));
}
} catch (IllegalArgumentException e) {
LOG.warn(Utils.invalidConfigMessage(lineEndings, lineEndingsKey, filePath));
}
}
}
}