org.roda.wui.client.common.dialogs.DefaultSelectDialog.java Source code

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Here is the source code for org.roda.wui.client.common.dialogs.DefaultSelectDialog.java

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/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE file at the root of the source
 * tree and available online at
 *
 * https://github.com/keeps/roda
 */
package org.roda.wui.client.common.dialogs;

import org.roda.core.data.v2.index.IsIndexed;
import org.roda.core.data.v2.index.filter.Filter;
import org.roda.wui.client.common.lists.utils.AsyncTableCell;
import org.roda.wui.client.common.lists.utils.BasicAsyncTableCell;
import org.roda.wui.client.common.search.SearchPanel;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SelectionChangeEvent.Handler;

import config.i18n.client.ClientMessages;

public class DefaultSelectDialog<T extends IsIndexed, O> extends DialogBox implements SelectDialog<T> {
    private static final Binder binder = GWT.create(Binder.class);

    @SuppressWarnings("rawtypes")
    interface Binder extends UiBinder<Widget, DefaultSelectDialog> {
    }

    private static final ClientMessages messages = GWT.create(ClientMessages.class);

    @UiField(provided = true)
    SearchPanel searchPanel;

    @UiField
    Button cancelButton;

    @UiField
    Button selectButton;

    @UiField
    Button emptyParentButton;

    @UiField(provided = true)
    AsyncTableCell<T, O> searchResultsPanel;

    public DefaultSelectDialog(String title, Filter filter, String searchField,
            AsyncTableCell<T, O> searchResultsPanel, boolean hidePreFilters) {
        this.searchResultsPanel = searchResultsPanel;

        searchPanel = new SearchPanel(filter, searchField, true, messages.selectAipSearchPlaceHolder(), false,
                false, hidePreFilters);
        searchPanel.setList(searchResultsPanel);

        setWidget(binder.createAndBindUi(this));

        setAutoHideEnabled(false);
        setModal(true);
        setGlassEnabled(true);
        setAnimationEnabled(false);

        setText(title);
        center();

        emptyParentButton.setVisible(false);
        selectButton.setEnabled(false);

        this.searchResultsPanel.getSelectionModel().addSelectionChangeHandler(new Handler() {

            @Override
            public void onSelectionChange(SelectionChangeEvent event) {
                selectButton.setEnabled(DefaultSelectDialog.this.getValue() != null);
            }
        });
    }

    @Override
    public void showAndCenter() {
        if (Window.getClientWidth() < 800) {
            this.setWidth(Window.getClientWidth() + "px");
        }

        show();
        center();
    }

    public void setSingleSelectionMode() {
        selectButton.setEnabled(false);

        searchResultsPanel.getSelectionModel().addSelectionChangeHandler(new Handler() {

            @Override
            public void onSelectionChange(SelectionChangeEvent event) {
                if (DefaultSelectDialog.this.getValue() != null) {
                    onChange();
                    hide();
                }
            }
        });
    }

    public void hidePreFilters() {
        searchPanel.hidePreFilters();
    }

    @UiHandler("cancelButton")
    void buttonCancelHandler(ClickEvent e) {
        hide();
    }

    @UiHandler("selectButton")
    void buttonSelectHandler(ClickEvent e) {
        onChange();
        hide();
    }

    @UiHandler("emptyParentButton")
    void buttonEmptyParentHandler(ClickEvent e) {
        searchResultsPanel.getSelectionModel().clear();
        onChange();
        hide();
    }

    @Override
    public HandlerRegistration addValueChangeHandler(ValueChangeHandler<T> handler) {
        return addHandler(handler, ValueChangeEvent.getType());
    }

    protected void onChange() {
        ValueChangeEvent.fire(this, getValue());
    }

    public T getValue() {
        return searchResultsPanel.getSelectionModel().getSelectedObject();
    }

    public BasicAsyncTableCell<T> getList() {
        return (BasicAsyncTableCell<T>) searchResultsPanel;
    }

    public void setEmptyParentButtonVisible(boolean visible) {
        emptyParentButton.setVisible(visible);
    }
}