BrowserAddress.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.context;

import com.google.gwt.user.client.Window;
import com.google.inject.Inject;
import com.google.inject.Singleton;

import org.eclipse.che.ide.api.ProductInfoDataProvider;

/**
 * Helps to update address and extract information from current address.
 *
 * @author Alexander Andrienko
 * @author Sergii Leschenko
 */
@Singleton
public class BrowserAddress {
    private static final int NAMESPACE_START_SEGMENT = 1;

    private final ProductInfoDataProvider productInfoDataProvider;

    @Inject
    public BrowserAddress(ProductInfoDataProvider productInfoDataProvider) {
        this.productInfoDataProvider = productInfoDataProvider;
    }

    /**
     * Updates browser's address along with tab title in accordance to current running workspace.
     *
     * @param namespace
     *         namespace of workspace
     * @param workspaceName
     *         name of the current running workspace. Can be null or empty if workspace was stopped.
     */
    public void setAddress(String namespace, String workspaceName) {
        String browserUrl = Window.Location.getPath();
        int currentSlashIndex = 0;
        int currentSlashNumber = 0;
        while (currentSlashNumber < NAMESPACE_START_SEGMENT) {
            currentSlashIndex = browserUrl.indexOf('/', currentSlashIndex);
            currentSlashNumber++;
        }

        String baseUrl = browserUrl.substring(0, currentSlashIndex) + "/" + namespace + "/" + workspaceName;

        String title;
        if (workspaceName == null || workspaceName.isEmpty()) {
            title = productInfoDataProvider.getDocumentTitle();
        } else {
            title = productInfoDataProvider.getDocumentTitle(workspaceName);
        }
        doSetAddress(baseUrl, title);
    }

    /**
     * Returns workspace name from current address
     * or empty string when it is undefined.
     */
    public String getWorkspaceName() {
        String workspaceKey = getWorkspaceKey();
        String[] split = workspaceKey.split("/", 2);
        if (split.length != 2) {
            return "";
        }
        return workspaceKey.substring(workspaceKey.lastIndexOf("/") + 1);
    }

    /**
     * Returns workspace key from current address
     * or empty string when it is undefined.
     *
     * @see org.eclipse.che.ide.api.workspace.WorkspaceServiceClient#getWorkspace(String)
     */
    public String getWorkspaceKey() {
        String browserUrl = Window.Location.getPath();
        String[] urlParts = browserUrl.split("/", NAMESPACE_START_SEGMENT + 1);
        if (urlParts.length < NAMESPACE_START_SEGMENT) {
            return "";
        } else {
            return urlParts[NAMESPACE_START_SEGMENT];
        }
    }

    private native void doSetAddress(String url, String title) /*-{
        try {
            var window = $wnd;

            if (!window["_history_relocation_id"]) {
                window["_history_relocation_id"] = 0;
            }

            window.top.document.title = title;

            window.history.pushState(window["_history_relocation_id"], window.top.document.title, url);
            window["_history_relocation_id"]++;
        } catch (e) {
            console.log(e.message);
        }
    }-*/;
}