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cache ico/exe native icons by file path

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This commit is contained in:
Sergey Baranov
2009-09-25 16:18:35 +04:00
parent f0633a4b66
commit f0f1979293
1 changed files with 19 additions and 5 deletions
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platform/lang-impl/src/com/intellij/openapi/fileTypes/impl/NativeFileIconProvider.java
+19 -5
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@@ -20,24 +20,33 @@ import java.util.*;
public class NativeFileIconProvider implements FileIconProvider {
private JFileChooser myFileChooser = new JFileChooser();
private final Map<String, Icon> myIconCache = new HashMap<String, Icon>();
// on Windows .exe and .ico files provide their own icons which can differ for each file, don't cache them
private final Set<String> myNoCacheExtensions = SystemInfo.isWindows ? new HashSet<String>(Arrays.asList("exe", "ico")) : new HashSet<String>();
// on Windows .exe and .ico files provide their own icons which can differ for each file, cache them by full file path
private final Set<String> myCustomIconExtensions =
SystemInfo.isWindows ? new HashSet<String>(Arrays.asList("exe", "ico")) : new HashSet<String>();
private final Map<String, Icon> myCustomIconCache = new HashMap<String, Icon>();
public Icon getIcon(VirtualFile file, int flags, @Nullable Project project) {
if (!(file.getFileType() instanceof NativeFileType) && !(file.getFileType() instanceof UnknownFileType)) {
return null;
}
final String ext = file.getExtension();
final String filePath = file.getPath();
Icon icon;
synchronized (myIconCache) {
icon = ext != null && !myNoCacheExtensions.contains(ext) ? myIconCache.get(ext) : null;
if (!myCustomIconExtensions.contains(ext)) {
icon = ext != null ? myIconCache.get(ext) : null;
}
else {
icon = filePath != null ? myCustomIconCache.get(filePath) : null;
}
}
if (icon != null) {
return icon;
}
return new DeferredIconImpl<VirtualFile>(file.getFileType().getIcon(), file, false, new Function<VirtualFile, Icon>() {
public Icon fun(VirtualFile virtualFile) {
final File f = new File(virtualFile.getPath());
final File f = new File(filePath);
if (!f.exists()) {
return null;
}
@@ -50,7 +59,12 @@ public class NativeFileIconProvider implements FileIconProvider {
}
if (ext != null) {
synchronized (myIconCache) {
myIconCache.put(ext, icon);
if (!myCustomIconExtensions.contains(ext)) {
myIconCache.put(ext, icon);
}
else if (filePath != null) {
myCustomIconCache.put(filePath, icon);
}
}
}
return icon;