com.gwtplatform.samples.hplace.client.application.breadcrumbs.BreadcrumbsView.java Source code

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Here is the source code for com.gwtplatform.samples.hplace.client.application.breadcrumbs.BreadcrumbsView.java

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/**
 * Copyright 2011 ArcBees Inc.
 *
 * 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.gwtplatform.samples.hplace.client.application.breadcrumbs;

import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.InlineHyperlink;
import com.google.gwt.user.client.ui.InlineLabel;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;
import com.gwtplatform.mvp.client.ViewImpl;
import com.gwtplatform.mvp.client.proxy.PlaceManager;

/**
 * This is the top-level view of the application. Every time another presenter
 * wants to reveal itself, {@link BreadcrumbPresenterView} will add its content
 * of the target inside the {@code mainContantPanel}.
 *
 * @author Philippe Beaudoin
 * @author Christian Goudreau
 */
public class BreadcrumbsView extends ViewImpl implements BreadcrumbsPresenter.MyView {
    /**
     */
    public interface Binder extends UiBinder<Widget, BreadcrumbsView> {
    }

    @UiField
    FlowPanel breadcrumbs;
    @UiField
    FlowPanel mainContentPanel;

    private final PlaceManager placeManager;
    private final Widget widget;

    @Inject
    public BreadcrumbsView(final Binder binder, final PlaceManager placeManager) {
        this.placeManager = placeManager;

        widget = binder.createAndBindUi(this);
    }

    @Override
    public Widget asWidget() {
        return widget;
    }

    @Override
    public void clearBreadcrumbs(int breadcrumbSize) {
        breadcrumbs.clear();
        for (int i = 0; i < breadcrumbSize; ++i) {
            if (i > 0) {
                breadcrumbs.add(new InlineLabel(" > "));
            }
            breadcrumbs.add(new InlineHyperlink("Loading title...", placeManager.buildRelativeHistoryToken(i + 1)));
        }
    }

    @Override
    public void setBreadcrumbs(int index, String title) {
        InlineHyperlink hyperlink = (InlineHyperlink) breadcrumbs.getWidget(index * 2);
        if (title == null) {
            hyperlink.setHTML("Unknown title");
        } else {
            hyperlink.setHTML(title);
        }
    }

    @Override
    public void setInSlot(Object slot, Widget content) {
        if (slot == BreadcrumbsPresenter.TYPE_SetMainContent) {
            setMainContent(content);
        } else {
            super.setInSlot(slot, content);
        }
    }

    private void setMainContent(Widget content) {
        mainContentPanel.clear();

        if (content != null) {
            mainContentPanel.add(content);
        }
    }
}