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

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

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// 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.gerrit.client.ui.AccountGroupSuggestOracle;
import com.google.gerrit.client.ui.RPCSuggestOracle;
import com.google.gerrit.common.data.GroupReference;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gwt.editor.client.LeafValueEditor;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.event.logical.shared.HasCloseHandlers;
import com.google.gwt.event.logical.shared.HasSelectionHandlers;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Focusable;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestBox.DefaultSuggestionDisplay;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
import com.google.gwtexpui.globalkey.client.NpTextBox;

public class GroupReferenceBox extends Composite implements LeafValueEditor<GroupReference>,
        HasSelectionHandlers<GroupReference>, HasCloseHandlers<GroupReferenceBox>, Focusable {
    private final DefaultSuggestionDisplay suggestions;
    private final NpTextBox textBox;
    private final AccountGroupSuggestOracle oracle;
    private final SuggestBox suggestBox;

    private boolean submitOnSelection;

    public GroupReferenceBox() {
        suggestions = new DefaultSuggestionDisplay();
        textBox = new NpTextBox();
        oracle = new AccountGroupSuggestOracle();
        suggestBox = new SuggestBox( //
                new RPCSuggestOracle(oracle), //
                textBox, //
                suggestions);
        initWidget(suggestBox);

        textBox.addKeyPressHandler(new KeyPressHandler() {
            @Override
            public void onKeyPress(KeyPressEvent event) {
                submitOnSelection = false;

                if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) {
                    if (suggestions.isSuggestionListShowing()) {
                        submitOnSelection = true;
                    } else {
                        SelectionEvent.fire(GroupReferenceBox.this, getValue());
                    }
                }
            }
        });
        suggestBox.addKeyUpHandler(new KeyUpHandler() {
            @Override
            public void onKeyUp(KeyUpEvent event) {
                if (event.getNativeKeyCode() == KeyCodes.KEY_ESCAPE) {
                    suggestBox.setText("");
                    CloseEvent.fire(GroupReferenceBox.this, GroupReferenceBox.this);
                }
            }
        });
        suggestBox.addSelectionHandler(new SelectionHandler<Suggestion>() {
            @Override
            public void onSelection(SelectionEvent<Suggestion> event) {
                if (submitOnSelection) {
                    submitOnSelection = false;
                    SelectionEvent.fire(GroupReferenceBox.this, getValue());
                }
            }
        });
    }

    public void setVisibleLength(int len) {
        textBox.setVisibleLength(len);
    }

    @Override
    public HandlerRegistration addSelectionHandler(SelectionHandler<GroupReference> handler) {
        return addHandler(handler, SelectionEvent.getType());
    }

    @Override
    public HandlerRegistration addCloseHandler(CloseHandler<GroupReferenceBox> handler) {
        return addHandler(handler, CloseEvent.getType());
    }

    @Override
    public GroupReference getValue() {
        String name = suggestBox.getText();
        if (name != null && !name.isEmpty()) {
            return new GroupReference(oracle.getUUID(name), name);
        } else {
            return null;
        }
    }

    @Override
    public void setValue(GroupReference value) {
        suggestBox.setText(value != null ? value.getName() : "");
    }

    @Override
    public int getTabIndex() {
        return suggestBox.getTabIndex();
    }

    @Override
    public void setTabIndex(int index) {
        suggestBox.setTabIndex(index);
    }

    public void setFocus(boolean focused) {
        suggestBox.setFocus(focused);
    }

    @Override
    public void setAccessKey(char key) {
        suggestBox.setAccessKey(key);
    }

    public void setProject(Project.NameKey projectName) {
        oracle.setProject(projectName);
    }
}