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// Copyright (C) 2014 The Android Open Source Project
//
// 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 net.codemirror.theme;
import com.google.gerrit.extensions.client.Theme;
import com.google.gwt.dom.client.StyleInjector;
import com.google.gwt.resources.client.ExternalTextResource;
import com.google.gwt.resources.client.ResourceCallback;
import com.google.gwt.resources.client.ResourceException;
import com.google.gwt.resources.client.TextResource;
import com.google.gwt.user.client.rpc.AsyncCallback;
import java.util.EnumSet;
/** Dynamically loads a known CodeMirror theme's CSS */
public class ThemeLoader {
private static final ExternalTextResource[] THEMES = {
Themes.I.day_3024(),
Themes.I.night_3024(),
Themes.I.abcdef(),
Themes.I.ambiance(),
Themes.I.base16_dark(),
Themes.I.base16_light(),
Themes.I.bespin(),
Themes.I.blackboard(),
Themes.I.cobalt(),
Themes.I.colorforth(),
Themes.I.dracula(),
Themes.I.eclipse(),
Themes.I.elegant(),
Themes.I.erlang_dark(),
Themes.I.hopscotch(),
Themes.I.icecoder(),
Themes.I.isotope(),
Themes.I.lesser_dark(),
Themes.I.liquibyte(),
Themes.I.material(),
Themes.I.mbo(),
Themes.I.mdn_like(),
Themes.I.midnight(),
Themes.I.monokai(),
Themes.I.neat(),
Themes.I.neo(),
Themes.I.night(),
Themes.I.paraiso_dark(),
Themes.I.paraiso_light(),
Themes.I.pastel_on_dark(),
Themes.I.railscasts(),
Themes.I.rubyblue(),
Themes.I.seti(),
Themes.I.solarized(),
Themes.I.the_matrix(),
Themes.I.tomorrow_night_bright(),
Themes.I.tomorrow_night_eighties(),
Themes.I.ttcn(),
Themes.I.twilight(),
Themes.I.vibrant_ink(),
Themes.I.xq_dark(),
Themes.I.xq_light(),
Themes.I.yeti(),
Themes.I.zenburn(),
};
private static final EnumSet<Theme> loaded = EnumSet.of(Theme.DEFAULT);
public static final void loadTheme(Theme theme, AsyncCallback<Void> cb) {
if (loaded.contains(theme)) {
cb.onSuccess(null);
return;
}
ExternalTextResource resource = findTheme(theme);
if (resource == null) {
cb.onFailure(new Exception("unknown theme " + theme));
return;
}
try {
resource.getText(
new ResourceCallback<TextResource>() {
@Override
public void onSuccess(TextResource resource) {
StyleInjector.inject(resource.getText());
loaded.add(theme);
cb.onSuccess(null);
}
@Override
public void onError(ResourceException e) {
cb.onFailure(e);
}
});
} catch (ResourceException e) {
cb.onFailure(e);
}
}
private static ExternalTextResource findTheme(Theme theme) {
for (ExternalTextResource r : THEMES) {
if (theme.name().toLowerCase().equals(r.getName())) {
return r;
}
}
return null;
}
private ThemeLoader() {}
}
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