com.polymerui.client.view.util.PolymerUtil.java Source code

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Here is the source code for com.polymerui.client.view.util.PolymerUtil.java

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/*
 * Copyr ight 2016 stanislawbartkowski@gmail.com 
 * 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.polymerui.client.view.util;

import java.util.Iterator;

import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.HasWidgets;
import com.google.gwt.user.client.ui.Widget;
import com.gwtmodel.table.binder.IAttrName;
import com.gwtmodel.table.common.CUtil;
import com.jythonui.client.M;
import com.polymerui.client.IConsts;
import com.polymerui.client.util.Utils;
import com.vaadin.polymer.paper.widget.PaperDialog;

public class PolymerUtil {

    private PolymerUtil() {
    }

    public static String convert(String s) {
        StringBuffer b = new StringBuffer(s);
        while (true) {
            int i = b.indexOf(IConsts.RESBEG);
            if (i == -1)
                break;
            int k = b.indexOf(IConsts.RESEND, i);
            if (k == -1)
                break;
            String res = b.substring(i + 1, k);
            // together with $
            String v = M.S().getString(res);
            b.replace(i, k + 2, v);
        }
        return b.toString();
    }

    public interface IVisitor {
        void visit(String fieldid, Widget w);
    }

    public static void walkHTMLPanel(HasWidgets ha, IVisitor i) {
        Iterator<Widget> iW = ha.iterator();
        // iterate through widget
        while (iW.hasNext()) {
            Widget ww = iW.next();

            String id = Utils.getWidgetAttribute(ww, IAttrName.FIELDID);
            if (!CUtil.EmptyS(id))
                i.visit(id, ww);
            if (ww instanceof HasWidgets)
                walkHTMLPanel((HasWidgets) ww, i);
        }
    }

    private static class FoundI implements IVisitor {

        private final String searchId;
        private Widget foundW;

        FoundI(String searchId) {
            this.searchId = searchId;
        }

        @Override
        public void visit(String fieldid, Widget w) {
            if (fieldid.equals(searchId))
                foundW = w;
        }

    }

    public static Widget findWidgetByFieldId(HasWidgets ha, String fieldid) {

        FoundI i = new FoundI(fieldid);

        walkHTMLPanel(ha, i);

        return i.foundW;
    }

    public static void verifyWidgetType(String description, Widget w, Class<? extends Widget>... classes) {

        for (Class<? extends Widget> c : classes)
            if (w.getClass().equals(c))
                return;
        String desc = null;
        for (Class<? extends Widget> c : classes)
            if (desc == null)
                desc = c.getName();
            else
                desc = desc + " , " + c.getName();
        // 2017/07/30 swap order desc - w.getClass().getName()
        Utils.errAlertB(M.M().ActionSupportedOnlyForWidget(description, desc, w.getClass().getName()));
    }

    public static Widget findandverifyWidget(String description, HTMLPanel ha, String id,
            Class<? extends Widget>... classes) {
        Widget w = findWidgetByFieldId(ha, id);
        if (w == null)
            Utils.errAlertB(M.M().CannotFindElementForAction(description, id));
        else
            verifyWidgetType(description, w, classes);
        return w;
    }

    public static PaperDialog findPaperDialog(String errMess, HTMLPanel ha) {
        if (ha instanceof PaperDialog)
            return (PaperDialog) ha;
        Iterator<Widget> iW = ha.iterator();
        while (iW.hasNext()) {
            Widget ww = iW.next();
            if (ww instanceof PaperDialog)
                return (PaperDialog) ww;
        }
        Utils.errAlertB(errMess, M.M().CannotFindPaperDialog());
        return null;
    }

}