com.google.gerrit.client.account.UsernameField.java Source code

Introduction

Here is the source code for com.google.gerrit.client.account.UsernameField.java

Source

// Copyright (C) 2008 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.account;

import com.google.gerrit.client.ErrorDialog;
import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.ui.OnEditEnabler;
import com.google.gerrit.common.errors.InvalidUserNameException;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
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.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwtexpui.clippy.client.CopyableLabel;
import com.google.gwtexpui.globalkey.client.NpTextBox;
import com.google.gwtjsonrpc.common.VoidResult;

class UsernameField extends Composite {
    private CopyableLabel userNameLbl;
    private NpTextBox userNameTxt;
    private Button setUserName;

    UsernameField() {
        String user = Gerrit.getUserAccount().getUserName();
        userNameLbl = new CopyableLabel(user != null ? user : "");
        userNameLbl.setStyleName(Gerrit.RESOURCES.css().accountUsername());

        if (user != null || !canEditUserName()) {
            initWidget(userNameLbl);

        } else {
            final FlowPanel body = new FlowPanel();
            initWidget(body);
            setStyleName(Gerrit.RESOURCES.css().usernameField());

            userNameTxt = new NpTextBox();
            userNameTxt.addKeyPressHandler(new UserNameValidator());
            userNameTxt.addStyleName(Gerrit.RESOURCES.css().accountUsername());
            userNameTxt.setVisibleLength(16);
            userNameTxt.addKeyPressHandler(new KeyPressHandler() {
                @Override
                public void onKeyPress(KeyPressEvent event) {
                    if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) {
                        doSetUserName();
                    }
                }
            });

            setUserName = new Button(Util.C.buttonSetUserName());
            setUserName.setVisible(canEditUserName());
            setUserName.setEnabled(false);
            setUserName.addClickHandler(new ClickHandler() {
                @Override
                public void onClick(final ClickEvent event) {
                    doSetUserName();
                }
            });
            new OnEditEnabler(setUserName, userNameTxt);

            userNameLbl.setVisible(false);
            body.add(userNameLbl);
            body.add(userNameTxt);
            body.add(setUserName);
        }
    }

    private boolean canEditUserName() {
        return Gerrit.getConfig().canEdit(Account.FieldName.USER_NAME);
    }

    private void doSetUserName() {
        if (!canEditUserName()) {
            return;
        }

        String newName = userNameTxt.getText();
        if ("".equals(newName)) {
            newName = null;
        }
        if (newName != null && !newName.matches(Account.USER_NAME_PATTERN)) {
            invalidUserName();
            return;
        }

        enableUI(false);

        final String newUserName = newName;
        Util.ACCOUNT_SEC.changeUserName(newUserName, new GerritCallback<VoidResult>() {
            public void onSuccess(final VoidResult result) {
                Gerrit.getUserAccount().setUserName(newUserName);
                userNameLbl.setText(newUserName);
                userNameLbl.setVisible(true);
                userNameTxt.setVisible(false);
                setUserName.setVisible(false);
            }

            @Override
            public void onFailure(final Throwable caught) {
                enableUI(true);
                if (InvalidUserNameException.MESSAGE.equals(caught.getMessage())) {
                    invalidUserName();
                } else {
                    super.onFailure(caught);
                }
            }
        });
    }

    private void invalidUserName() {
        new ErrorDialog(Util.C.invalidUserName()).center();
    }

    private void enableUI(final boolean on) {
        userNameTxt.setEnabled(on);
        setUserName.setEnabled(on);
    }

    private final class UserNameValidator implements KeyPressHandler {
        @Override
        public void onKeyPress(final KeyPressEvent event) {
            final char code = event.getCharCode();
            final int nativeCode = event.getNativeEvent().getKeyCode();
            switch (nativeCode) {
            case KeyCodes.KEY_ALT:
            case KeyCodes.KEY_BACKSPACE:
            case KeyCodes.KEY_CTRL:
            case KeyCodes.KEY_DELETE:
            case KeyCodes.KEY_DOWN:
            case KeyCodes.KEY_END:
            case KeyCodes.KEY_ENTER:
            case KeyCodes.KEY_ESCAPE:
            case KeyCodes.KEY_HOME:
            case KeyCodes.KEY_LEFT:
            case KeyCodes.KEY_PAGEDOWN:
            case KeyCodes.KEY_PAGEUP:
            case KeyCodes.KEY_RIGHT:
            case KeyCodes.KEY_SHIFT:
            case KeyCodes.KEY_TAB:
            case KeyCodes.KEY_UP:
                // Allow these, even if one of their assigned codes is
                // identical to an ASCII character we do not want to
                // allow in the box.
                //
                // We still want to let the user move around the input box
                // with their arrow keys, or to move between fields using tab.
                // Invalid characters introduced will be caught through the
                // server's own validation of the input data.
                //
                break;

            default:
                final TextBox box = (TextBox) event.getSource();
                final String re;
                if (box.getCursorPos() == 0)
                    re = Account.USER_NAME_PATTERN_FIRST;
                else
                    re = Account.USER_NAME_PATTERN_REST;
                if (!String.valueOf(code).matches("^" + re + "$")) {
                    event.preventDefault();
                    event.stopPropagation();
                }
            }
        }
    }
}