com.google.gerrit.client.api.DefaultActions.java Source code

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Here is the source code for com.google.gerrit.client.api.DefaultActions.java

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// Copyright (C) 2013 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 com.google.gerrit.client.api;

import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.info.ActionInfo;
import com.google.gerrit.client.info.ChangeInfo;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.rpc.NativeString;
import com.google.gerrit.client.rpc.RestApi;
import com.google.gerrit.common.PageLinks;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.Window.Location;
import com.google.gwt.user.client.rpc.AsyncCallback;

class DefaultActions {
    static void invoke(ChangeInfo change, ActionInfo action, RestApi api) {
        invoke(action, api, callback(PageLinks.toChange(change.legacyId())));
    }

    static void invoke(Project.NameKey project, ActionInfo action, RestApi api) {
        invoke(action, api, callback(PageLinks.toProject(project)));
    }

    private static AsyncCallback<JavaScriptObject> callback(final String target) {
        return new GerritCallback<JavaScriptObject>() {
            @Override
            public void onSuccess(JavaScriptObject in) {
                UiResult result = asUiResult(in);
                if (result.alert() != null) {
                    Window.alert(result.alert());
                }

                if (result.redirectUrl() != null && result.openWindow()) {
                    Window.open(result.redirectUrl(), "_blank", null);
                } else if (result.redirectUrl() != null) {
                    Location.assign(result.redirectUrl());
                } else {
                    Gerrit.display(target);
                }
            }

            private UiResult asUiResult(JavaScriptObject in) {
                if (NativeString.is(in)) {
                    String str = ((NativeString) in).asString();
                    return str.isEmpty() ? UiResult.none() : UiResult.alert(str);
                }
                return in.cast();
            }
        };
    }

    private static void invoke(ActionInfo action, RestApi api, AsyncCallback<JavaScriptObject> cb) {
        if ("GET".equalsIgnoreCase(action.method())) {
            api.get(cb);
        } else if ("PUT".equalsIgnoreCase(action.method())) {
            api.put(JavaScriptObject.createObject(), cb);
        } else if ("DELETE".equalsIgnoreCase(action.method())) {
            api.delete(cb);
        } else {
            api.post(JavaScriptObject.createObject(), cb);
        }
    }

    private DefaultActions() {
    }

    private static class UiResult extends JavaScriptObject {
        static native UiResult alert(String m) /*-{ return {'alert':m} }-*/;

        static native UiResult none() /*-{ return {} }-*/;

        final native String alert() /*-{ return this.alert }-*/;

        final native String redirectUrl() /*-{ return this.url }-*/;

        final native boolean openWindow() /*-{ return this.open_window || false }-*/;

        protected UiResult() {
        }
    }
}