org.bonitasoft.console.client.view.CSSStyleSelectorWidget.java Source code

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Here is the source code for org.bonitasoft.console.client.view.CSSStyleSelectorWidget.java

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/**
 * Copyright (C) 2009 BonitaSoft S.A.
 * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.console.client.view;

import org.bonitasoft.console.client.events.StyleSelectionListener;
import org.bonitasoft.console.client.labels.LabelModel;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.Label;

/**
 * This widget allows a user to select a css style using some preview mechanism
 * to associate to a {@link PersistedLabelModel}.
 * 
 * @author Nicolas Chabanoles
 */
public class CSSStyleSelectorWidget extends I18NPopupPanel {

    protected static final String[] editableCSSClassName = new String[] { "label_red_editable",
            "label_dark_red_editable", "label_green_editable", "label_dark_green_editable", "label_blue_editable",
            "label_dark_blue_editable", LabelModel.DEFAULT_EDITABLE_CSS, "label_dark_grey_editable" };
    protected static final String[] readonlyCSSClassName = new String[] { "label_red_readonly",
            "label_dark_red_readonly", "label_green_readonly", "label_dark_green_readonly", "label_blue_readonly",
            "label_dark_blue_readonly", LabelModel.DEFAULT_READONLY_CSS, "label_dark_grey_readonly" };
    protected static final String[] previewCSSClassName = new String[] { "label_red_preview",
            "label_dark_red_preview", "label_green_preview", "label_dark_green_preview", "label_blue_preview",
            "label_dark_blue_preview", LabelModel.DEFAULT_PREVIEW_CSS, "label_dark_grey_preview" };

    protected static final String CONTAINER_CSS_SUFFIX = "_container";
    protected static final String B_CHARACTER = "b";
    protected static final String TITLE_LABEL_KEY = constants.selectLabelStyle();
    protected StyleSelectionListener myStyleSelectionListener;

    private class StyleClickHandler implements ClickHandler {

        String myEditableCSSStyle;
        String myPreviewCSSStyle;
        String myReadOnlyCSSStyle;

        /**
         * Default constructor.
         * 
         * @param aLabel
         * @param aEditableCSSStyle
         * @param aPreviewCSSStyle
         * @param aReadOnlyCSSStyle
         */
        public StyleClickHandler(String aEditableCSSStyle, String aPreviewCSSStyle, String aReadOnlyCSSStyle) {
            super();
            this.myEditableCSSStyle = aEditableCSSStyle;
            this.myPreviewCSSStyle = aPreviewCSSStyle;
            this.myReadOnlyCSSStyle = aReadOnlyCSSStyle;
        }

        /*
         * (non-Javadoc)
         * 
         * @see
         * com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event
         * .dom.client.ClickEvent)
         */
        public void onClick(ClickEvent aArg0) {
            myStyleSelectionListener.notifySelectionChange(myEditableCSSStyle, myPreviewCSSStyle,
                    myReadOnlyCSSStyle);
        }
    }

    /**
     * 
     * Default constructor.
     * 
     * @param aLabelDataSource
     * @param aLabelModel
     */
    public CSSStyleSelectorWidget() {
        super();
        FlexTable theOuterPanel = new FlexTable();
        Label theLabel;
        DecoratorPanel theContainer;
        theLabel = new Label(TITLE_LABEL_KEY);
        theOuterPanel.setWidget(0, 0, theLabel);
        theOuterPanel.getFlexCellFormatter().setColSpan(0, 0, 4);

        if (editableCSSClassName.length != readonlyCSSClassName.length
                || editableCSSClassName.length != previewCSSClassName.length) {
            Window.alert("Invalid list of CSS style definitions in class LabelStyleSelectorWidget!");
        }

        int theRow = 1;
        int theCol = 0;
        for (int i = 0; i < editableCSSClassName.length; i++) {
            theContainer = new DecoratorPanel();
            theLabel = new Label(B_CHARACTER);
            theContainer.add(theLabel);
            theContainer.setStylePrimaryName(previewCSSClassName[i] + CONTAINER_CSS_SUFFIX);
            theLabel.setStyleName(previewCSSClassName[i]);
            theLabel.addClickHandler(new StyleClickHandler(editableCSSClassName[i], previewCSSClassName[i],
                    readonlyCSSClassName[i]));
            theOuterPanel.setWidget(theRow, theCol, theContainer);
            // Go to a new line every 4 choices.
            if (theCol == 3) {
                theRow++;
                theCol = 0;
            } else {
                theCol++;
            }
        }

        this.add(theOuterPanel);
        // Set the auto hide feature.
        setAutoHideEnabled(true);
    }

    /**
     * 
     * @param aListener
     */
    public void setStyleSelectionListener(StyleSelectionListener aListener) {
        myStyleSelectionListener = aListener;

    }

}