AbstractRuleModellerSelectorPopup.java

/*
 * Copyright 2012 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.drools.workbench.screens.guided.rule.client.editor;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;
import org.drools.workbench.models.datamodel.rule.RuleModel;
import org.gwtbootstrap3.client.ui.ListBox;
import org.kie.workbench.common.services.shared.preferences.ApplicationPreferences;
import org.kie.workbench.common.widgets.client.datamodel.AsyncPackageDataModelOracle;
import org.uberfire.ext.widgets.common.client.common.FormStyleLayout;
import org.uberfire.ext.widgets.common.client.common.popups.BaseModal;

/**
 * Base class for Pop-ups used by RuleModeller
 */
public abstract class AbstractRuleModellerSelectorPopup extends BaseModal {

    protected static final String SECTION_SEPARATOR = "..................";

    protected int MIN_WIDTH = 500;
    protected int MIN_HEIGHT = 200;

    protected boolean onlyShowDSLStatements = ApplicationPreferences.getBooleanPref("rule-modeller-onlyShowDSLStatements");

    protected final RuleModel model;
    protected final RuleModeller ruleModeller;
    protected final AsyncPackageDataModelOracle oracle;
    protected final Map<String, Command> cmds = new HashMap<String, Command>();
    protected Integer position;

    protected final SimplePanel choicesPanel = new SimplePanel();
    protected final FormStyleLayout layoutPanel = new FormStyleLayout();
    protected final ListBox positionCbo = new ListBox();
    protected ListBox choices;

    public AbstractRuleModellerSelectorPopup(final RuleModel model,
                                             final RuleModeller ruleModeller,
                                             final Integer position,
                                             final AsyncPackageDataModelOracle oracle) {
        this.model = model;
        this.position = position;
        this.ruleModeller = ruleModeller;
        this.oracle = oracle;
        this.setTitle(getPopupTitle());
    }

    /**
     * Get a title for the pop-up
     * @return
     */
    protected abstract String getPopupTitle();

    /**
     * Get content for the pop-up
     * @return
     */
    protected abstract Widget getContent();

    /**
     * Executed when a selection has been made. Refreshes the underlying
     * RuleModeller widget
     */
    protected void selectSomething() {
        int sel = choices.getSelectedIndex();
        if (sel != -1) {
            Command cmd = cmds.get(choices.getValue(sel));
            if (cmd != null) {
                cmd.execute();
                ruleModeller.refreshWidget();
            }
        }
    }

    /**
     * Width of pop-up, 1/4 of the client width or MIN_WIDTH
     * @return
     */
    protected int getChoicesWidth() {
        int w = Window.getClientWidth() / 4;
        if (w < MIN_WIDTH) {
            w = MIN_WIDTH;
        }
        return w;
    }

    /**
     * Height of pop-up, 1/2 of the client height or MIN_HEIGHT
     * @return
     */
    protected int getChoicesHeight() {
        int h = Window.getClientHeight() / 2;
        if (h < MIN_HEIGHT) {
            h = MIN_HEIGHT;
        }
        return h;
    }
}