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[ui] relaying RefCardAction file existence check via a cancellable routine and memorizing the result

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GitOrigin-RevId: c2946fc2cba722fbe282b651640dbf4c1621ce88
This commit is contained in:
Roman Shevchenko
2022-07-01 14:20:25 +00:00
committed by intellij-monorepo-bot
parent 11b9c74949
commit bf1932199a
1 changed files with 21 additions and 27 deletions
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platform/platform-impl/src/com/intellij/ide/actions/RefCardAction.java
+21 -27
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@@ -1,4 +1,4 @@
// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
// Copyright 2000-2022 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
package com.intellij.ide.actions;
import com.intellij.ide.BrowserUtil;
@@ -7,54 +7,48 @@ import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.application.PathManager;
import com.intellij.openapi.application.ex.ApplicationInfoEx;
import com.intellij.openapi.project.DumbAwareAction;
import com.intellij.openapi.util.NullableLazyValue;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.io.FileUtil;
import org.jetbrains.annotations.NonNls;
import com.intellij.openapi.vfs.DiskQueryRelay;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;
/**
* @author Vladimir Kondratyev
*/
public class RefCardAction extends DumbAwareAction {
private static final @NonNls String REF_CARD_PATH =
PathManager.getHomePath() + "/help/" + (SystemInfo.isMac ? "ReferenceCardForMac.pdf" : "ReferenceCard.pdf");
private final NullableLazyValue<Path> myRefCardPath = NullableLazyValue.lazyNullable(() -> {
var relay = new DiskQueryRelay<Path, Path>(file -> Files.isRegularFile(file) ? file : null);
var file = Path.of(PathManager.getHomePath() + "/help/" + (SystemInfo.isMac ? "ReferenceCardForMac.pdf" : "ReferenceCard.pdf"));
return relay.accessDiskWithCheckCanceled(file);
});
@Override
public @NotNull ActionUpdateThread getActionUpdateThread() {
return ActionUpdateThread.BGT;
}
@Override
public void update(@NotNull AnActionEvent e) {
e.getPresentation().setEnabledAndVisible(myRefCardPath.getValue() != null || getKeymapUrl() != null);
}
@Override
public void actionPerformed(@NotNull AnActionEvent e) {
File file = getRefCardFile();
if (file.isFile()) {
var file = myRefCardPath.getValue();
if (file != null) {
BrowserUtil.browse(file);
}
else {
String webUrl = getKeymapUrl();
var webUrl = getKeymapUrl();
if (webUrl != null) {
BrowserUtil.browse(webUrl);
}
}
}
@Override
public void update(@NotNull AnActionEvent e) {
e.getPresentation().setEnabledAndVisible(isRefCardAvailable());
}
private static boolean isRefCardAvailable() {
return getRefCardFile().exists() || getKeymapUrl() != null;
}
private static String getKeymapUrl() {
final ApplicationInfoEx appInfo = ApplicationInfoEx.getInstanceEx();
private static @Nullable String getKeymapUrl() {
var appInfo = ApplicationInfoEx.getInstanceEx();
return SystemInfo.isMac ? appInfo.getMacKeymapUrl() : appInfo.getWinKeymapUrl();
}
private static @NotNull File getRefCardFile() {
return new File(FileUtil.toSystemDependentName(REF_CARD_PATH));
}
}