// Copyright 2008 Google Inc.
//
// 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.changes;

import com.google.gerrit.client.FormatUtil;
import com.google.gerrit.client.data.ChangeDetail;
import com.google.gerrit.client.reviewdb.Branch;
import com.google.gerrit.client.reviewdb.Change;
import com.google.gerrit.client.ui.AccountDashboardLink;
import com.google.gerrit.client.ui.ChangeLink;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;

public class ChangeInfoBlock extends Composite {
  private static final int R_OWNER = 0;
  private static final int R_PROJECT = 1;
  private static final int R_BRANCH = 2;
  private static final int R_UPLOADED = 3;
  private static final int R_STATUS = 4;
  private static final int R_PERMALINK = 5;
  private static final int R_CNT = 6;

  private final Grid table;

  public ChangeInfoBlock() {
    table = new Grid(R_CNT, 2);
    table.setStyleName("gerrit-InfoBlock");
    table.addStyleName("gerrit-ChangeInfoBlock");

    initRow(R_OWNER, Util.C.changeInfoBlockOwner());
    initRow(R_PROJECT, Util.C.changeInfoBlockProject());
    initRow(R_BRANCH, Util.C.changeInfoBlockBranch());
    initRow(R_UPLOADED, Util.C.changeInfoBlockUploaded());
    initRow(R_STATUS, Util.C.changeInfoBlockStatus());

    final CellFormatter fmt = table.getCellFormatter();
    fmt.addStyleName(0, 0, "topmost");
    fmt.addStyleName(0, 1, "topmost");
    fmt.addStyleName(R_CNT - 2, 0, "bottomheader");
    fmt.addStyleName(R_PERMALINK, 0, "permalink");
    fmt.addStyleName(R_PERMALINK, 1, "permalink");

    initWidget(table);
  }

  private void initRow(final int row, final String name) {
    table.setText(row, 0, name);
    table.getCellFormatter().addStyleName(row, 0, "header");
  }

  public void display(final ChangeDetail detail) {
    final Change chg = detail.getChange();
    final Branch.NameKey dst = chg.getDest();
    table.setWidget(R_OWNER, 1, AccountDashboardLink.link(detail.getAccounts(),
        detail.getChange().getOwner()));
    table.setText(R_PROJECT, 1, dst.getParentKey().get());
    table.setText(R_BRANCH, 1, dst.getShortName());
    table.setText(R_UPLOADED, 1, FormatUtil.mediumFormat(chg.getCreatedOn()));
    table.setText(R_STATUS, 1, Util.toLongString(chg.getStatus()));

    if (chg.getStatus().isClosed()) {
      table.getCellFormatter().addStyleName(R_STATUS, 1, "closedstate");
    } else {
      table.getCellFormatter().removeStyleName(R_STATUS, 1, "closedstate");
    }

    table.setWidget(R_PERMALINK, 1, new ChangeLink(Util.C.changePermalink(),
        chg.getKey()));
  }
}