com.scurab.web.drifmaps.client.form.VerySimpleForm.java Source code

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Here is the source code for com.scurab.web.drifmaps.client.form.VerySimpleForm.java

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/*
 * Copyright 2009 Andrew Pietsch
 *
 * 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.scurab.web.drifmaps.client.form;

import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import com.pietschy.gwt.pectin.client.form.FieldModelBase;
import com.pietschy.gwt.pectin.client.form.metadata.HasVisible;
import com.pietschy.gwt.pectin.client.form.validation.binding.ValidationBinder;
import com.pietschy.gwt.pectin.client.form.validation.component.ValidationDisplayLabel;

/**
 * Created by IntelliJ IDEA. User: andrew Date: Jul 18, 2009 Time: 12:14:12 PM
 * To change this template use File | Settings | File Templates.
 * @param <T>
 */
public abstract class VerySimpleForm extends Composite {
    private FlexTable table = new FlexTable();
    protected FlexTable.FlexCellFormatter cellFormatter = table.getFlexCellFormatter();

    public VerySimpleForm() {
        initWidget(table);
        setStylePrimaryName("VerySimpleForm");
    }

    public Row addRow(Widget widget) {
        int rowIndex = table.getRowCount();
        table.getFlexCellFormatter().setColSpan(rowIndex, 1, 2);
        table.setWidget(rowIndex, 1, widget);
        styleWidgets(rowIndex);
        return new Row(rowIndex);
    }

    public Row addRow(String label, Widget widget) {
        int rowIndex = table.getRowCount();
        table.setText(rowIndex, 0, label);
        table.getFlexCellFormatter().setWordWrap(rowIndex, 0, false);
        styleLabel(rowIndex);
        table.setWidget(rowIndex, 1, widget);
        styleWidgets(rowIndex);
        return new Row(rowIndex);
    }

    public Row addRow(Widget label, Widget widget) {
        int rowIndex = table.getRowCount();
        table.setWidget(rowIndex, 0, label);
        table.getFlexCellFormatter().setWordWrap(rowIndex, 0, false);
        styleLabel(rowIndex);
        table.setWidget(rowIndex, 1, widget);
        return new Row(rowIndex);
    }

    protected Row addRow(String label, Widget widget, String hint) {
        return addRow(label, widget, createHint(hint));
    }

    public Row addRow(String label, Widget widget, Widget... others) {
        return addRow(label, hp(widget, others));
    }

    public Row addRow(Widget label, Widget widget, Widget... others) {
        return addRow(label, hp(widget, others));
    }

    protected Row addTallRow(String label, Widget widget) {
        VerySimpleForm.Row row = addRow(label, widget);
        cellFormatter.addStyleName(row.getRowIndex(), 0, "verticalAlignTop");
        return row;
    }

    private void styleLabel(int row) {
        cellFormatter.addStyleName(row, 0, "VerySimpleForm-Label");
    }

    private void styleWidgets(int row) {
        cellFormatter.addStyleName(row, 1, "VerySimpleForm-Widgets");
    }

    protected Label createHint() {
        return createHint("");
    }

    protected Label createHint(String text) {
        return styleAs(new Label(text), "VerySimpleForm-Hint");
    }

    private <T extends Widget> T styleAs(T widget, String style) {
        widget.addStyleName(style);
        return widget;
    }

    protected Row addNote(String text) {
        int rowIndex = table.getRowCount();
        table.setText(rowIndex, 1, text);
        cellFormatter.setStylePrimaryName(rowIndex, 1, "VerySimpleForm-Note");
        return new Row(rowIndex);
    }

    public Row addGap() {
        int rowIndex = table.getRowCount();
        table.setWidget(rowIndex, 0, new HTML("&nbsp;"));
        cellFormatter.setColSpan(rowIndex, 0, 2);
        cellFormatter.setStylePrimaryName(rowIndex, 0, "VerySimpleForm-GapRow");
        return new Row(rowIndex);
    }

    protected Widget hp(Widget first, Widget... others) {
        if (others.length == 0) {
            return first;
        }

        HorizontalPanel p = new HorizontalPanel();
        p.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        p.add(first);
        for (Widget other : others) {
            // mmmm.. hacky.
            p.add(new HTML("&nbsp;&nbsp;"));
            p.add(other);
        }
        return p;
    }

    protected Widget hpWithNoGap(Widget first, Widget... others) {
        if (others.length == 0) {
            return first;
        }

        HorizontalPanel p = new HorizontalPanel();
        p.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        p.add(first);
        for (Widget other : others) {
            p.add(other);
        }
        return p;
    }

    public class Row implements HasVisible {
        private int rowIndex;

        public Row(int rowIndex) {
            this.rowIndex = rowIndex;
        }

        public int getRowIndex() {
            return rowIndex;
        }

        @Override
        public void setVisible(boolean visible) {
            table.getRowFormatter().setVisible(rowIndex, visible);
        }

        @Override
        public boolean isVisible() {
            return table.getRowFormatter().isVisible(rowIndex);
        }

    }

    protected ValidationDisplayLabel createValidationLabel(ValidationBinder validation, FieldModelBase<?> field) {
        ValidationDisplayLabel label = new ValidationDisplayLabel();
        validation.bindValidationOf(field).to(label);
        return label;
    }

}