com.philbeaudoin.gwtphplacesample.client.view.BreadcrumbsView.java Source code

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Here is the source code for com.philbeaudoin.gwtphplacesample.client.view.BreadcrumbsView.java

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/**
 * Copyright 2010 Philippe Beaudoin
 *
 * 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.philbeaudoin.gwtphplacesample.client.view;

import com.google.gwt.core.client.GWT;
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.philbeaudoin.gwtp.mvp.client.ViewImpl;
import com.philbeaudoin.gwtp.mvp.client.proxy.PlaceManager;
import com.philbeaudoin.gwtphplacesample.client.presenter.BreadcrumbsPresenter;
import com.philbeaudoin.gwtphplacesample.client.presenter.BreadcrumbsPresenter.MyView;

/**
 * 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 Christian Goudreau
 */
public class BreadcrumbsView extends ViewImpl implements MyView {
    private static BreadcrumbsViewUiBinder uiBinder = GWT.create(BreadcrumbsViewUiBinder.class);

    interface BreadcrumbsViewUiBinder extends UiBinder<Widget, BreadcrumbsView> {
    }

    private final PlaceManager placeManager;

    public final Widget widget;

    @UiField
    FlowPanel breadcrumbs;
    @UiField
    FlowPanel mainContentPanel;

    @Inject
    public BreadcrumbsView(PlaceManager placeManager) {
        this.placeManager = placeManager;
        widget = uiBinder.createAndBindUi(this);
    }

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

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

    @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);
    }

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

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

}