com.google.gerrit.client.admin.RangeBox.java Source code

Introduction

Here is the source code for com.google.gerrit.client.admin.RangeBox.java

Source

// Copyright (C) 2011 The Android Open Source Project
//
// 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.google.gerrit.client.admin;

import com.google.gwt.editor.client.IsEditor;
import com.google.gwt.editor.client.adapters.TakesValueEditor;
import com.google.gwt.text.shared.Renderer;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.IntegerBox;
import com.google.gwt.user.client.ui.ValueBoxBase.TextAlignment;
import com.google.gwt.user.client.ui.ValueListBox;

import java.io.IOException;

abstract class RangeBox extends Composite implements IsEditor<TakesValueEditor<Integer>> {
    static final RangeRenderer rangeRenderer = new RangeRenderer();

    private static class RangeRenderer implements Renderer<Integer> {
        @Override
        public String render(Integer object) {
            if (0 <= object) {
                return "+" + object;
            } else {
                return String.valueOf(object);
            }
        }

        @Override
        public void render(Integer object, Appendable appendable) throws IOException {
            appendable.append(render(object));
        }
    }

    static class List extends RangeBox {
        final ValueListBox<Integer> list;

        List() {
            list = new ValueListBox<Integer>(rangeRenderer);
            initWidget(list);
        }

        @Override
        void setEnabled(boolean on) {
            DOM.setElementPropertyBoolean(list.getElement(), "disabled", !on);
        }

        @Override
        public TakesValueEditor<Integer> asEditor() {
            return list.asEditor();
        }
    }

    static class Box extends RangeBox {
        private final IntegerBox box;

        Box() {
            box = new IntegerBox();
            box.setVisibleLength(10);
            box.setAlignment(TextAlignment.RIGHT);
            initWidget(box);
        }

        @Override
        void setEnabled(boolean on) {
            DOM.setElementPropertyBoolean(box.getElement(), "disabled", !on);
        }

        @Override
        public TakesValueEditor<Integer> asEditor() {
            return box.asEditor();
        }
    }

    abstract void setEnabled(boolean on);
}