gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ChangeTable.java - gerrit - Git at Google

 // 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.changes;

 import static com.google.gerrit.client.FormatUtil.shortFormat;

 import com.google.gerrit.client.Gerrit;
 import com.google.gerrit.client.ui.AccountLink;
 import com.google.gerrit.client.ui.BranchLink;
 import com.google.gerrit.client.ui.ChangeLink;
 import com.google.gerrit.client.ui.NavigationTable;
 import com.google.gerrit.client.ui.NeedsSignInKeyCommand;
 import com.google.gerrit.client.ui.ProjectLink;
 import com.google.gerrit.common.PageLinks;
 import com.google.gerrit.common.data.AccountInfoCache;
 import com.google.gerrit.common.data.ChangeInfo;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.dom.client.ClickHandler;
 import com.google.gwt.event.dom.client.KeyPressEvent;
 import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
 import com.google.gwt.user.client.ui.HTMLTable.Cell;
 import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;

 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;

 public class ChangeTable extends NavigationTable<ChangeInfo> {
   private static final int C_STAR = 1;
   private static final int C_SUBJECT = 2;
   private static final int C_OWNER = 3;
   private static final int C_PROJECT = 4;
   private static final int C_BRANCH = 5;
   private static final int C_LAST_UPDATE = 6;
   private static final int COLUMNS = 7;

   private final List<Section> sections;
   private AccountInfoCache accountCache = AccountInfoCache.empty();

   public ChangeTable() {
     super(Util.C.changeItemHelp());

     if (Gerrit.isSignedIn()) {
       keysAction.add(new StarKeyCommand(0, 's', Util.C.changeTableStar()));
     }

     sections = new ArrayList<Section>();
     table.setText(0, C_STAR, "");
     table.setText(0, C_SUBJECT, Util.C.changeTableColumnSubject());
     table.setText(0, C_OWNER, Util.C.changeTableColumnOwner());
     table.setText(0, C_PROJECT, Util.C.changeTableColumnProject());
     table.setText(0, C_BRANCH, Util.C.changeTableColumnBranch());
     table.setText(0, C_LAST_UPDATE, Util.C.changeTableColumnLastUpdate());

     final FlexCellFormatter fmt = table.getFlexCellFormatter();
     fmt.addStyleName(0, C_STAR, Gerrit.RESOURCES.css().iconHeader());
     for (int i = C_SUBJECT; i < COLUMNS; i++) {
       fmt.addStyleName(0, i, Gerrit.RESOURCES.css().dataHeader());
     }

     table.addClickHandler(new ClickHandler() {
       @Override
       public void onClick(final ClickEvent event) {
         final Cell cell = table.getCellForEvent(event);
         if (cell == null) {
           return;
         }
         if (cell.getCellIndex() == C_STAR) {
           // Don't do anything (handled by star itself).
         } else if (cell.getCellIndex() == C_OWNER) {
           // Don't do anything.
         } else if (getRowItem(cell.getRowIndex()) != null) {
           movePointerTo(cell.getRowIndex());
         }
       }
     });
   }

   protected void onStarClick(final int row) {
     final ChangeInfo c = getRowItem(row);
     if (c != null && Gerrit.isSignedIn()) {
       ((StarredChanges.Icon) table.getWidget(row, C_STAR)).toggleStar();
     }
   }

   @Override
   protected Object getRowItemKey(final ChangeInfo item) {
     return item.getId();
   }

   @Override
   protected void onOpenRow(final int row) {
     final ChangeInfo c = getRowItem(row);
     Gerrit.display(PageLinks.toChange(c), new ChangeScreen(c));
   }

   private void insertNoneRow(final int row) {
     insertRow(row);
     table.setText(row, 0, Util.C.changeTableNone());
     final FlexCellFormatter fmt = table.getFlexCellFormatter();
     fmt.setColSpan(row, 0, COLUMNS);
     fmt.setStyleName(row, 0, Gerrit.RESOURCES.css().emptySection());
   }

   private void insertChangeRow(final int row) {
     insertRow(row);
     applyDataRowStyle(row);
   }

   @Override
   protected void applyDataRowStyle(final int row) {
     super.applyDataRowStyle(row);
     final CellFormatter fmt = table.getCellFormatter();
     fmt.addStyleName(row, C_STAR, Gerrit.RESOURCES.css().iconCell());
     for (int i = C_SUBJECT; i < COLUMNS; i++) {
       fmt.addStyleName(row, i, Gerrit.RESOURCES.css().dataCell());
     }
     fmt.addStyleName(row, C_SUBJECT, Gerrit.RESOURCES.css().cSUBJECT());
     fmt.addStyleName(row, C_OWNER, Gerrit.RESOURCES.css().cOWNER());
     fmt.addStyleName(row, C_LAST_UPDATE, Gerrit.RESOURCES.css().cLastUpdate());
   }

   private void populateChangeRow(final int row, final ChangeInfo c,
       final ChangeRowFormatter changeRowFormatter) {
     ChangeCache cache = ChangeCache.get(c.getId());
     cache.getChangeInfoCache().set(c);

     table.setWidget(row, C_ARROW, null);
     if (Gerrit.isSignedIn()) {
       table.setWidget(row, C_STAR, StarredChanges.createIcon(c.getId(), c.isStarred()));
     }

     String s = Util.cropSubject(c.getSubject());
     if (c.getStatus() != null && c.getStatus() != Change.Status.NEW) {
       s += " (" + c.getStatus().name() + ")";
     }
     if (changeRowFormatter != null) {
       removeChangeStyle(row, changeRowFormatter);
       final String rowStyle = changeRowFormatter.getRowStyle(c);
       if (rowStyle != null) {
         table.getRowFormatter().addStyleName(row, rowStyle);
       }
       s = changeRowFormatter.getDisplayText(c, s);
     }

     table.setWidget(row, C_SUBJECT, new TableChangeLink(s, c));
     table.setWidget(row, C_OWNER, link(c.getOwner()));
     table.setWidget(row, C_PROJECT, new ProjectLink(c.getProject().getKey(), c
         .getStatus()));
     table.setWidget(row, C_BRANCH, new BranchLink(c.getProject().getKey(), c
         .getStatus(), c.getBranch(), c.getTopic()));
     table.setText(row, C_LAST_UPDATE, shortFormat(c.getLastUpdatedOn()));

     setRowItem(row, c);
   }

   private void removeChangeStyle(int row,
       final ChangeRowFormatter changeRowFormatter) {
     final ChangeInfo oldChange = getRowItem(row);
     if (oldChange == null) {
       return;
     }

     final String oldRowStyle = changeRowFormatter.getRowStyle(oldChange);
     if (oldRowStyle != null) {
       table.getRowFormatter().removeStyleName(row, oldRowStyle);
     }
   }

   private AccountLink link(final Account.Id id) {
     return AccountLink.link(accountCache, id);
   }

   public void addSection(final Section s) {
     assert s.parent == null;

     if (s.titleText != null) {
       s.titleRow = table.getRowCount();
       table.setText(s.titleRow, 0, s.titleText);
       final FlexCellFormatter fmt = table.getFlexCellFormatter();
       fmt.setColSpan(s.titleRow, 0, COLUMNS);
       fmt.addStyleName(s.titleRow, 0, Gerrit.RESOURCES.css().sectionHeader());
     } else {
       s.titleRow = -1;
     }

     s.parent = this;
     s.dataBegin = table.getRowCount();
     insertNoneRow(s.dataBegin);
     sections.add(s);
   }

   public void setAccountInfoCache(final AccountInfoCache aic) {
     assert aic != null;
     accountCache = aic;
   }

   private int insertRow(final int beforeRow) {
     for (final Section s : sections) {
       if (beforeRow <= s.titleRow) {
         s.titleRow++;
       }
       if (beforeRow < s.dataBegin) {
         s.dataBegin++;
       }
     }
     return table.insertRow(beforeRow);
   }

   private void removeRow(final int row) {
     for (final Section s : sections) {
       if (row < s.titleRow) {
         s.titleRow--;
       }
       if (row < s.dataBegin) {
         s.dataBegin--;
       }
     }
     table.removeRow(row);
   }

   public class StarKeyCommand extends NeedsSignInKeyCommand {
     public StarKeyCommand(int mask, char key, String help) {
       super(mask, key, help);
     }

     @Override
     public void onKeyPress(final KeyPressEvent event) {
       onStarClick(getCurrentRow());
     }
   }

   private final class TableChangeLink extends ChangeLink {
     private TableChangeLink(final String text, final ChangeInfo c) {
       super(text, c);
     }

     @Override
     public void go() {
       movePointerTo(cid);
       super.go();
     }
   }

   public static class Section {
     String titleText;

     ChangeTable parent;
     final Account.Id ownerId;
     int titleRow = -1;
     int dataBegin;
     int rows;

     private ChangeRowFormatter changeRowFormatter;

     public Section() {
       this(null, null);
     }

     public Section(final String titleText) {
       this(titleText, null);
     }

     public Section(final String titleText, final Account.Id owner) {
       setTitleText(titleText);
       ownerId = owner;
     }

     public void setTitleText(final String text) {
       titleText = text;
       if (titleRow >= 0) {
         parent.table.setText(titleRow, 0, titleText);
       }
     }

     public void setChangeRowFormatter(final ChangeRowFormatter changeRowFormatter) {
       this.changeRowFormatter = changeRowFormatter;
     }

     public void display(final List<ChangeInfo> changeList) {
       final int sz = changeList != null ? changeList.size() : 0;
       final boolean hadData = rows > 0;

       if (hadData) {
         while (sz < rows) {
           parent.removeRow(dataBegin);
           rows--;
         }
       }

       if (sz == 0) {
         if (hadData) {
           parent.insertNoneRow(dataBegin);
         }
       } else {
         Set<Change.Id> cids = new HashSet<Change.Id>();

         if (!hadData) {
           parent.removeRow(dataBegin);
         }

         while (rows < sz) {
           parent.insertChangeRow(dataBegin + rows);
           rows++;
         }

         for (int i = 0; i < sz; i++) {
           ChangeInfo c = changeList.get(i);
           parent.populateChangeRow(dataBegin + i, c, changeRowFormatter);
           cids.add(c.getId());
         }
       }
     }
   }

   public static interface ChangeRowFormatter {
     /**
      * Returns the name of the CSS style that should be applied to the change
      * row.
      *
      * @param c the change for which the styling should be returned
      * @return the name of the CSS style that should be applied to the change
      *         row
      */
     String getRowStyle(ChangeInfo c);

     /**
      * Returns the text that should be displayed for the change.
      *
      * @param c the change for which the display text should be returned
      * @param displayText the current display text
      * @return the new display text
      */
     String getDisplayText(ChangeInfo c, String displayText);
   }
 }
	// 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.changes;

	import static com.google.gerrit.client.FormatUtil.shortFormat;

	import com.google.gerrit.client.Gerrit;
	import com.google.gerrit.client.ui.AccountLink;
	import com.google.gerrit.client.ui.BranchLink;
	import com.google.gerrit.client.ui.ChangeLink;
	import com.google.gerrit.client.ui.NavigationTable;
	import com.google.gerrit.client.ui.NeedsSignInKeyCommand;
	import com.google.gerrit.client.ui.ProjectLink;
	import com.google.gerrit.common.PageLinks;
	import com.google.gerrit.common.data.AccountInfoCache;
	import com.google.gerrit.common.data.ChangeInfo;
	import com.google.gerrit.reviewdb.client.Account;
	import com.google.gerrit.reviewdb.client.Change;
	import com.google.gwt.event.dom.client.ClickEvent;
	import com.google.gwt.event.dom.client.ClickHandler;
	import com.google.gwt.event.dom.client.KeyPressEvent;
	import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
	import com.google.gwt.user.client.ui.HTMLTable.Cell;
	import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;

	import java.util.ArrayList;
	import java.util.HashSet;
	import java.util.List;
	import java.util.Set;

	public class ChangeTable extends NavigationTable<ChangeInfo> {
	private static final int C_STAR = 1;
	private static final int C_SUBJECT = 2;
	private static final int C_OWNER = 3;
	private static final int C_PROJECT = 4;
	private static final int C_BRANCH = 5;
	private static final int C_LAST_UPDATE = 6;
	private static final int COLUMNS = 7;

	private final List<Section> sections;
	private AccountInfoCache accountCache = AccountInfoCache.empty();

	public ChangeTable() {
	super(Util.C.changeItemHelp());

	if (Gerrit.isSignedIn()) {
	keysAction.add(new StarKeyCommand(0, 's', Util.C.changeTableStar()));
	}

	sections = new ArrayList<Section>();
	table.setText(0, C_STAR, "");
	table.setText(0, C_SUBJECT, Util.C.changeTableColumnSubject());
	table.setText(0, C_OWNER, Util.C.changeTableColumnOwner());
	table.setText(0, C_PROJECT, Util.C.changeTableColumnProject());
	table.setText(0, C_BRANCH, Util.C.changeTableColumnBranch());
	table.setText(0, C_LAST_UPDATE, Util.C.changeTableColumnLastUpdate());

	final FlexCellFormatter fmt = table.getFlexCellFormatter();
	fmt.addStyleName(0, C_STAR, Gerrit.RESOURCES.css().iconHeader());
	for (int i = C_SUBJECT; i < COLUMNS; i++) {
	fmt.addStyleName(0, i, Gerrit.RESOURCES.css().dataHeader());
	}

	table.addClickHandler(new ClickHandler() {
	@Override
	public void onClick(final ClickEvent event) {
	final Cell cell = table.getCellForEvent(event);
	if (cell == null) {
	return;
	}
	if (cell.getCellIndex() == C_STAR) {
	// Don't do anything (handled by star itself).
	} else if (cell.getCellIndex() == C_OWNER) {
	// Don't do anything.
	} else if (getRowItem(cell.getRowIndex()) != null) {
	movePointerTo(cell.getRowIndex());
	}
	}
	});
	}

	protected void onStarClick(final int row) {
	final ChangeInfo c = getRowItem(row);
	if (c != null && Gerrit.isSignedIn()) {
	((StarredChanges.Icon) table.getWidget(row, C_STAR)).toggleStar();
	}
	}

	@Override
	protected Object getRowItemKey(final ChangeInfo item) {
	return item.getId();
	}

	@Override
	protected void onOpenRow(final int row) {
	final ChangeInfo c = getRowItem(row);
	Gerrit.display(PageLinks.toChange(c), new ChangeScreen(c));
	}

	private void insertNoneRow(final int row) {
	insertRow(row);
	table.setText(row, 0, Util.C.changeTableNone());
	final FlexCellFormatter fmt = table.getFlexCellFormatter();
	fmt.setColSpan(row, 0, COLUMNS);
	fmt.setStyleName(row, 0, Gerrit.RESOURCES.css().emptySection());
	}

	private void insertChangeRow(final int row) {
	insertRow(row);
	applyDataRowStyle(row);
	}

	@Override
	protected void applyDataRowStyle(final int row) {
	super.applyDataRowStyle(row);
	final CellFormatter fmt = table.getCellFormatter();
	fmt.addStyleName(row, C_STAR, Gerrit.RESOURCES.css().iconCell());
	for (int i = C_SUBJECT; i < COLUMNS; i++) {
	fmt.addStyleName(row, i, Gerrit.RESOURCES.css().dataCell());
	}
	fmt.addStyleName(row, C_SUBJECT, Gerrit.RESOURCES.css().cSUBJECT());
	fmt.addStyleName(row, C_OWNER, Gerrit.RESOURCES.css().cOWNER());
	fmt.addStyleName(row, C_LAST_UPDATE, Gerrit.RESOURCES.css().cLastUpdate());
	}

	private void populateChangeRow(final int row, final ChangeInfo c,
	final ChangeRowFormatter changeRowFormatter) {
	ChangeCache cache = ChangeCache.get(c.getId());
	cache.getChangeInfoCache().set(c);

	table.setWidget(row, C_ARROW, null);
	if (Gerrit.isSignedIn()) {
	table.setWidget(row, C_STAR, StarredChanges.createIcon(c.getId(), c.isStarred()));
	}

	String s = Util.cropSubject(c.getSubject());
	if (c.getStatus() != null && c.getStatus() != Change.Status.NEW) {
	s += " (" + c.getStatus().name() + ")";
	}
	if (changeRowFormatter != null) {
	removeChangeStyle(row, changeRowFormatter);
	final String rowStyle = changeRowFormatter.getRowStyle(c);
	if (rowStyle != null) {
	table.getRowFormatter().addStyleName(row, rowStyle);
	}
	s = changeRowFormatter.getDisplayText(c, s);
	}

	table.setWidget(row, C_SUBJECT, new TableChangeLink(s, c));
	table.setWidget(row, C_OWNER, link(c.getOwner()));
	table.setWidget(row, C_PROJECT, new ProjectLink(c.getProject().getKey(), c
	.getStatus()));
	table.setWidget(row, C_BRANCH, new BranchLink(c.getProject().getKey(), c
	.getStatus(), c.getBranch(), c.getTopic()));
	table.setText(row, C_LAST_UPDATE, shortFormat(c.getLastUpdatedOn()));

	setRowItem(row, c);
	}

	private void removeChangeStyle(int row,
	final ChangeRowFormatter changeRowFormatter) {
	final ChangeInfo oldChange = getRowItem(row);
	if (oldChange == null) {
	return;
	}

	final String oldRowStyle = changeRowFormatter.getRowStyle(oldChange);
	if (oldRowStyle != null) {
	table.getRowFormatter().removeStyleName(row, oldRowStyle);
	}
	}

	private AccountLink link(final Account.Id id) {
	return AccountLink.link(accountCache, id);
	}

	public void addSection(final Section s) {
	assert s.parent == null;

	if (s.titleText != null) {
	s.titleRow = table.getRowCount();
	table.setText(s.titleRow, 0, s.titleText);
	final FlexCellFormatter fmt = table.getFlexCellFormatter();
	fmt.setColSpan(s.titleRow, 0, COLUMNS);
	fmt.addStyleName(s.titleRow, 0, Gerrit.RESOURCES.css().sectionHeader());
	} else {
	s.titleRow = -1;
	}

	s.parent = this;
	s.dataBegin = table.getRowCount();
	insertNoneRow(s.dataBegin);
	sections.add(s);
	}

	public void setAccountInfoCache(final AccountInfoCache aic) {
	assert aic != null;
	accountCache = aic;
	}

	private int insertRow(final int beforeRow) {
	for (final Section s : sections) {
	if (beforeRow <= s.titleRow) {
	s.titleRow++;
	}
	if (beforeRow < s.dataBegin) {
	s.dataBegin++;
	}
	}
	return table.insertRow(beforeRow);
	}

	private void removeRow(final int row) {
	for (final Section s : sections) {
	if (row < s.titleRow) {
	s.titleRow--;
	}
	if (row < s.dataBegin) {
	s.dataBegin--;
	}
	}
	table.removeRow(row);
	}

	public class StarKeyCommand extends NeedsSignInKeyCommand {
	public StarKeyCommand(int mask, char key, String help) {
	super(mask, key, help);
	}

	@Override
	public void onKeyPress(final KeyPressEvent event) {
	onStarClick(getCurrentRow());
	}
	}

	private final class TableChangeLink extends ChangeLink {
	private TableChangeLink(final String text, final ChangeInfo c) {
	super(text, c);
	}

	@Override
	public void go() {
	movePointerTo(cid);
	super.go();
	}
	}

	public static class Section {
	String titleText;

	ChangeTable parent;
	final Account.Id ownerId;
	int titleRow = -1;
	int dataBegin;
	int rows;

	private ChangeRowFormatter changeRowFormatter;

	public Section() {
	this(null, null);
	}

	public Section(final String titleText) {
	this(titleText, null);
	}

	public Section(final String titleText, final Account.Id owner) {
	setTitleText(titleText);
	ownerId = owner;
	}

	public void setTitleText(final String text) {
	titleText = text;
	if (titleRow >= 0) {
	parent.table.setText(titleRow, 0, titleText);
	}
	}

	public void setChangeRowFormatter(final ChangeRowFormatter changeRowFormatter) {
	this.changeRowFormatter = changeRowFormatter;
	}

	public void display(final List<ChangeInfo> changeList) {
	final int sz = changeList != null ? changeList.size() : 0;
	final boolean hadData = rows > 0;

	if (hadData) {
	while (sz < rows) {
	parent.removeRow(dataBegin);
	rows--;
	}
	}

	if (sz == 0) {
	if (hadData) {
	parent.insertNoneRow(dataBegin);
	}
	} else {
	Set<Change.Id> cids = new HashSet<Change.Id>();

	if (!hadData) {
	parent.removeRow(dataBegin);
	}

	while (rows < sz) {
	parent.insertChangeRow(dataBegin + rows);
	rows++;
	}

	for (int i = 0; i < sz; i++) {
	ChangeInfo c = changeList.get(i);
	parent.populateChangeRow(dataBegin + i, c, changeRowFormatter);
	cids.add(c.getId());
	}
	}
	}
	}

	public static interface ChangeRowFormatter {
	/**
	* Returns the name of the CSS style that should be applied to the change
	* row.
	*
	* @param c the change for which the styling should be returned
	* @return the name of the CSS style that should be applied to the change
	* row
	*/
	String getRowStyle(ChangeInfo c);

	/**
	* Returns the text that should be displayed for the change.
	*
	* @param c the change for which the display text should be returned
	* @param displayText the current display text
	* @return the new display text
	*/
	String getDisplayText(ChangeInfo c, String displayText);
	}
	}