// 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.patches;
import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.changes.PatchTable;
import com.google.gerrit.client.changes.PublishCommentScreen;
import com.google.gerrit.client.changes.Util;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.ui.CommentPanel;
import com.google.gerrit.client.ui.NavigationTable;
import com.google.gerrit.client.ui.NeedsSignInKeyCommand;
import com.google.gerrit.common.data.AccountInfo;
import com.google.gerrit.common.data.AccountInfoCache;
import com.google.gerrit.common.data.CommentDetail;
import com.google.gerrit.common.data.PatchScript;
import com.google.gerrit.prettify.common.SparseFileContent;
import com.google.gerrit.reviewdb.Patch;
import com.google.gerrit.reviewdb.PatchLineComment;
import com.google.gerrit.reviewdb.PatchSet;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Focusable;
import com.google.gwt.user.client.ui.UIObject;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;
import com.google.gwtexpui.globalkey.client.GlobalKey;
import com.google.gwtexpui.globalkey.client.KeyCommand;
import com.google.gwtexpui.globalkey.client.KeyCommandSet;
import java.util.ArrayList;
import java.util.List;
public abstract class AbstractPatchContentTable extends NavigationTable<Object>
implements CommentEditorContainer, FocusHandler, BlurHandler {
protected PatchTable fileList;
protected AccountInfoCache accountCache = AccountInfoCache.empty();
protected Patch.Key patchKey;
protected PatchSet.Id idSideA;
protected PatchSet.Id idSideB;
protected boolean onlyOneHunk;
private final KeyCommandSet keysComment;
private HandlerRegistration regComment;
private final KeyCommandSet keysOpenByEnter;
private HandlerRegistration regOpenByEnter;
protected AbstractPatchContentTable() {
keysNavigation.add(new PrevKeyCommand(0, 'k', PatchUtil.C.linePrev()));
keysNavigation.add(new NextKeyCommand(0, 'j', PatchUtil.C.lineNext()));
keysNavigation.add(new PrevChunkKeyCmd(0, 'p', PatchUtil.C.chunkPrev()));
keysNavigation.add(new NextChunkKeyCmd(0, 'n', PatchUtil.C.chunkNext()));
keysNavigation.add(new PrevCommentCmd(0, 'P', PatchUtil.C.commentPrev()));
keysNavigation.add(new NextCommentCmd(0, 'N', PatchUtil.C.commentNext()));
keysAction.add(new OpenKeyCommand(0, 'o', PatchUtil.C.expandComment()));
keysOpenByEnter = new KeyCommandSet(Gerrit.C.sectionNavigation());
keysOpenByEnter.add(new OpenKeyCommand(0, KeyCodes.KEY_ENTER, PatchUtil.C.expandComment()));
if (Gerrit.isSignedIn()) {
keysAction.add(new InsertCommentCommand(0, 'c', PatchUtil.C
.commentInsert()));
keysAction.add(new PublishCommentsKeyCommand(0, 'r', Util.C
.keyPublishComments()));
// See CommentEditorPanel
//
keysComment = new KeyCommandSet(PatchUtil.C.commentEditorSet());
keysComment.add(new NoOpKeyCommand(KeyCommand.M_CTRL, 's', PatchUtil.C
.commentSaveDraft()));
keysComment.add(new NoOpKeyCommand(0, KeyCodes.KEY_ESCAPE, PatchUtil.C
.commentCancelEdit()));
} else {
keysComment = null;
}
table.setStyleName(Gerrit.RESOURCES.css().patchContentTable());
}
public void notifyDraftDelta(final int delta) {
if (fileList != null) {
fileList.notifyDraftDelta(patchKey, delta);
}
Widget p = getParent();
while (p != null) {
if (p instanceof CommentEditorContainer) {
((CommentEditorContainer) p).notifyDraftDelta(delta);
break;
}
p = p.getParent();
}
}
@Override
public void remove(CommentEditorPanel panel) {
final int nRows = table.getRowCount();
for (int row = 0; row < nRows; row++) {
final int nCells = table.getCellCount(row);
for (int cell = 0; cell < nCells; cell++) {
if (table.getWidget(row, cell) == panel) {
destroyEditor(row, cell);
Widget p = table;
while (p != null) {
if (p instanceof Focusable) {
((Focusable) p).setFocus(true);
break;
}
p = p.getParent();
}
if (Gerrit.RESOURCES.css().commentHolder().equals(
table.getCellFormatter().getStyleName(row - 1, cell))) {
table.getCellFormatter().addStyleName(row - 1, cell,
Gerrit.RESOURCES.css().commentPanelLast());
}
return;
}
}
}
}
@Override
public void setRegisterKeys(final boolean on) {
super.setRegisterKeys(on);
if (on && keysComment != null && regComment == null) {
regComment = GlobalKey.add(this, keysComment);
} else if (!on && regComment != null) {
regComment.removeHandler();
regComment = null;
}
if (on && keysOpenByEnter != null && regOpenByEnter == null) {
regOpenByEnter = GlobalKey.add(this, keysOpenByEnter);
} else if (!on && regOpenByEnter != null) {
regOpenByEnter.removeHandler();
regOpenByEnter = null;
}
}
public void display(final Patch.Key k, final PatchSet.Id a,
final PatchSet.Id b, final PatchScript s) {
patchKey = k;
idSideA = a;
idSideB = b;
render(s);
}
protected abstract void render(PatchScript script);
protected abstract void onInsertComment(PatchLine pl);
public abstract void display(CommentDetail comments);
@Override
protected MyFlexTable createFlexTable() {
return new DoubleClickFlexTable();
}
@Override
protected Object getRowItemKey(final Object item) {
return null;
}
protected void initScript(final PatchScript script) {
if (script.getEdits().size() == 1) {
final SparseFileContent a = script.getA();
final SparseFileContent b = script.getB();
onlyOneHunk = a.size() == 0 || b.size() == 0;
} else {
onlyOneHunk = false;
}
}
private boolean isChunk(final int row) {
final Object o = getRowItem(row);
if (!onlyOneHunk && o instanceof PatchLine) {
final PatchLine pl = (PatchLine) o;
switch (pl.getType()) {
case DELETE:
case INSERT:
case REPLACE:
return true;
}
} else if (o instanceof CommentList) {
return true;
}
return false;
}
private int findChunkStart(int row) {
while (0 <= row && isChunk(row)) {
row--;
}
return row + 1;
}
private int findChunkEnd(int row) {
final int max = table.getRowCount();
while (row < max && isChunk(row)) {
row++;
}
return row - 1;
}
private static int oneBefore(final int begin) {
return 1 <= begin ? begin - 1 : begin;
}
private int oneAfter(final int end) {
return end + 1 < table.getRowCount() ? end + 1 : end;
}
private void moveToPrevChunk(int row) {
while (0 <= row && isChunk(row)) {
row--;
}
for (; 0 <= row; row--) {
if (isChunk(row)) {
final int start = findChunkStart(row);
movePointerTo(start, false);
scrollIntoView(oneBefore(start), oneAfter(row));
return;
}
}
// No prior hunk found? Try to hit the first line in the file.
//
for (row = 0; row < table.getRowCount(); row++) {
if (getRowItem(row) != null) {
movePointerTo(row);
break;
}
}
}
private void moveToNextChunk(int row) {
final int max = table.getRowCount();
while (row < max && isChunk(row)) {
row++;
}
for (; row < max; row++) {
if (isChunk(row)) {
movePointerTo(row, false);
scrollIntoView(oneBefore(row), oneAfter(findChunkEnd(row)));
return;
}
}
// No next hunk found? Try to hit the last line in the file.
//
for (row = max - 1; row >= 0; row--) {
if (getRowItem(row) != null) {
movePointerTo(row);
break;
}
}
}
private void moveToPrevComment(int row) {
while (0 <= row && isComment(row)) {
row--;
}
for (; 0 <= row; row--) {
if (isComment(row)) {
movePointerTo(row, false);
scrollIntoView(oneBefore(row), oneAfter(row));
return;
}
}
// No prior comment found? Try to hit the first line in the file.
//
for (row = 0; row < table.getRowCount(); row++) {
if (getRowItem(row) != null) {
movePointerTo(row);
break;
}
}
}
private void moveToNextComment(int row) {
final int max = table.getRowCount();
while (row < max && isComment(row)) {
row++;
}
for (; row < max; row++) {
if (isComment(row)) {
movePointerTo(row, false);
scrollIntoView(oneBefore(row), oneAfter(row));
return;
}
}
// No next comment found? Try to hit the last line in the file.
//
for (row = max - 1; row >= 0; row--) {
if (getRowItem(row) != null) {
movePointerTo(row);
break;
}
}
}
private boolean isComment(int row) {
return getRowItem(row) instanceof CommentList;
}
/** Invoked when the user clicks on a table cell. */
protected abstract void onCellDoubleClick(int row, int column);
/**
* Invokes createCommentEditor() with an empty string as value for the comment
* parent UUID. This method is invoked by callers that want to create an
* editor for a comment that is not a reply.
*/
protected void createCommentEditor(final int suggestRow, final int column,
final int line, final short file) {
if (Gerrit.isSignedIn()) {
if (1 <= line) {
final Patch.Key parentKey;
final short side;
switch (file) {
case 0:
if (idSideA == null) {
parentKey = new Patch.Key(idSideB, patchKey.get());
side = (short) 0;
} else {
parentKey = new Patch.Key(idSideA, patchKey.get());
side = (short) 1;
}
break;
case 1:
parentKey = new Patch.Key(idSideB, patchKey.get());
side = (short) 1;
break;
default:
throw new RuntimeException("unexpected file id " + file);
}
final PatchLineComment newComment =
new PatchLineComment(new PatchLineComment.Key(parentKey, null),
line, Gerrit.getUserAccount().getId(), null);
newComment.setSide(side);
newComment.setMessage("");
createCommentEditor(suggestRow, column, newComment).setFocus(true);
}
} else {
Gerrit.doSignIn(History.getToken());
}
}
private CommentEditorPanel createCommentEditor(final int suggestRow,
final int column, final PatchLineComment newComment) {
int row = suggestRow;
int spans[] = new int[column + 1];
FIND_ROW: while (row < table.getRowCount()) {
int col = 0;
for (int cell = 0; row < table.getRowCount()
&& cell < table.getCellCount(row); cell++) {
while (col < column && 0 < spans[col]) {
spans[col++]--;
}
spans[col] = table.getFlexCellFormatter().getRowSpan(row, cell);
if (col == column) {
final Widget w = table.getWidget(row, cell);
if (w instanceof CommentEditorPanel) {
// Don't insert two editors on the same position, it doesn't make
// any sense to the user.
//
return ((CommentEditorPanel) w);
} else if (w instanceof CommentPanel) {
if (newComment != null && newComment.getParentUuid() != null) {
// If we are a reply, we were given the exact row to insert
// ourselves at. We should be before this panel so break.
//
break FIND_ROW;
}
row++;
} else {
break FIND_ROW;
}
}
}
}
if (newComment == null) {
return null;
}
final CommentEditorPanel ed = new CommentEditorPanel(newComment);
ed.addFocusHandler(this);
ed.addBlurHandler(this);
boolean isCommentRow = false;
boolean needInsert = false;
if (row < table.getRowCount()) {
for (int cell = 0; cell < table.getCellCount(row); cell++) {
final Widget w = table.getWidget(row, cell);
if (w instanceof CommentEditorPanel || w instanceof CommentPanel) {
if (column == cell) {
needInsert = true;
}
isCommentRow = true;
}
}
}
if (needInsert || !isCommentRow) {
insertRow(row);
styleCommentRow(row);
}
table.setWidget(row, column, ed);
styleLastCommentCell(row, column);
int span = 1;
for (int r = row + 1; r < table.getRowCount(); r++) {
boolean hasComment = false;
for (int c = 0; c < table.getCellCount(r); c++) {
final Widget w = table.getWidget(r, c);
if (w instanceof CommentPanel || w instanceof CommentEditorPanel) {
if (c != column) {
hasComment = true;
break;
}
}
}
if (hasComment) {
table.removeCell(r, column);
span++;
} else {
break;
}
}
if (span > 1) {
table.getFlexCellFormatter().setRowSpan(row, column, span);
}
for (int r = row - 1; r > 0; r--) {
if (getRowItem(r) instanceof CommentList) {
continue;
} else if (getRowItem(r) != null) {
movePointerTo(r);
break;
}
}
return ed;
}
protected void insertRow(final int row) {
table.insertRow(row);
table.getCellFormatter().setStyleName(row, 0,
Gerrit.RESOURCES.css().iconCell());
}
@Override
protected void onOpenRow(final int row) {
final Object item = getRowItem(row);
if (item instanceof CommentList) {
for (final CommentPanel p : ((CommentList) item).panels) {
p.setOpen(!p.isOpen());
}
}
}
public void setAccountInfoCache(final AccountInfoCache aic) {
assert aic != null;
accountCache = aic;
}
private void destroyEditor(final int row, final int col) {
table.clearCell(row, col);
final int span = table.getFlexCellFormatter().getRowSpan(row, col);
boolean removeRow = true;
final int nCells = table.getCellCount(row);
for (int cell = 0; cell < nCells; cell++) {
if (table.getWidget(row, cell) != null) {
removeRow = false;
break;
}
}
if (removeRow) {
for (int r = row - 1; 0 <= r; r--) {
boolean data = false;
for (int c = 0; c < table.getCellCount(r); c++) {
data |= table.getWidget(r, c) != null;
final int s = table.getFlexCellFormatter().getRowSpan(r, c) - 1;
if (r + s == row) {
table.getFlexCellFormatter().setRowSpan(r, c, s);
}
}
if (!data) {
break;
}
}
table.removeRow(row);
} else if (span != 1) {
table.getFlexCellFormatter().setRowSpan(row, col, 1);
for (int r = row + 1; r < row + span; r++) {
table.insertCell(r, col + 1);
}
}
}
protected void bindComment(final int row, final int col,
final PatchLineComment line, final boolean isLast) {
if (line.getStatus() == PatchLineComment.Status.DRAFT) {
final CommentEditorPanel plc = new CommentEditorPanel(line);
plc.addFocusHandler(this);
plc.addBlurHandler(this);
table.setWidget(row, col, plc);
styleLastCommentCell(row, col);
} else {
final AccountInfo author = accountCache.get(line.getAuthor());
final PublishedCommentPanel panel =
new PublishedCommentPanel(author, line);
panel.addFocusHandler(this);
panel.addBlurHandler(this);
table.setWidget(row, col, panel);
styleLastCommentCell(row, col);
CommentList l = (CommentList) getRowItem(row);
if (l == null) {
l = new CommentList();
setRowItem(row, l);
}
l.comments.add(line);
l.panels.add(panel);
}
styleCommentRow(row);
}
@Override
public void onFocus(FocusEvent event) {
// when the comment panel gets focused (actually when a button inside the
// comment panel gets focused) we have to unregister the key binding for
// ENTER that expands/collapses the comment panel, if we don't do this the
// focused button in the comment panel cannot be triggered by pressing ENTER
// since ENTER would then be already consumed by this key binding
if (regOpenByEnter != null) {
regOpenByEnter.removeHandler();
regOpenByEnter = null;
}
}
@Override
public void onBlur(BlurEvent event) {
// when the comment panel gets blurred (actually when a button inside the
// comment panel gets blurred) we have to re-register the key binding for
// ENTER that expands/collapses the comment panel
if (keysOpenByEnter != null && regOpenByEnter == null) {
regOpenByEnter = GlobalKey.add(this, keysOpenByEnter);
}
}
private void styleCommentRow(final int row) {
final CellFormatter fmt = table.getCellFormatter();
final Element iconCell = fmt.getElement(row, 0);
UIObject.setStyleName(DOM.getParent(iconCell), Gerrit.RESOURCES.css()
.commentHolder(), true);
}
private void styleLastCommentCell(final int row, final int col) {
final CellFormatter fmt = table.getCellFormatter();
fmt.removeStyleName(row - 1, col, //
Gerrit.RESOURCES.css().commentPanelLast());
fmt.setStyleName(row, col, Gerrit.RESOURCES.css().commentHolder());
fmt.addStyleName(row, col, Gerrit.RESOURCES.css().commentPanelLast());
}
protected static class CommentList {
final List<PatchLineComment> comments = new ArrayList<PatchLineComment>();
final List<PublishedCommentPanel> panels =
new ArrayList<PublishedCommentPanel>();
}
protected class DoubleClickFlexTable extends MyFlexTable {
public DoubleClickFlexTable() {
sinkEvents(Event.ONDBLCLICK | Event.ONCLICK);
}
@Override
public void onBrowserEvent(final Event event) {
switch (DOM.eventGetType(event)) {
case Event.ONCLICK: {
// Find out which cell was actually clicked.
final Element td = getEventTargetCell(event);
if (td == null) {
break;
}
final int row = rowOf(td);
if (getRowItem(row) != null) {
movePointerTo(row);
return;
}
break;
}
case Event.ONDBLCLICK: {
// Find out which cell was actually clicked.
Element td = getEventTargetCell(event);
if (td == null) {
return;
}
onCellDoubleClick(rowOf(td), columnOf(td));
return;
}
}
super.onBrowserEvent(event);
}
}
public static class NoOpKeyCommand extends NeedsSignInKeyCommand {
public NoOpKeyCommand(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
}
}
public class InsertCommentCommand extends NeedsSignInKeyCommand {
public InsertCommentCommand(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
ensurePointerVisible();
for (int row = getCurrentRow(); 0 <= row; row--) {
final Object item = getRowItem(row);
if (item instanceof PatchLine) {
onInsertComment((PatchLine) item);
return;
} else if (item instanceof CommentList) {
continue;
} else {
return;
}
}
}
}
public class PublishCommentsKeyCommand extends NeedsSignInKeyCommand {
public PublishCommentsKeyCommand(int mask, char key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
final PatchSet.Id id = patchKey.getParentKey();
Gerrit.display("change,publish," + id.toString(),
new PublishCommentScreen(id));
}
}
public class PrevChunkKeyCmd extends KeyCommand {
public PrevChunkKeyCmd(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
ensurePointerVisible();
moveToPrevChunk(getCurrentRow());
}
}
public class NextChunkKeyCmd extends KeyCommand {
public NextChunkKeyCmd(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
ensurePointerVisible();
moveToNextChunk(getCurrentRow());
}
}
public class PrevCommentCmd extends KeyCommand {
public PrevCommentCmd(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
ensurePointerVisible();
moveToPrevComment(getCurrentRow());
}
}
public class NextCommentCmd extends KeyCommand {
public NextCommentCmd(int mask, int key, String help) {
super(mask, key, help);
}
@Override
public void onKeyPress(final KeyPressEvent event) {
ensurePointerVisible();
moveToNextComment(getCurrentRow());
}
}
private class PublishedCommentPanel extends CommentPanel implements
ClickHandler {
final PatchLineComment comment;
final Button reply;
final Button replyDone;
PublishedCommentPanel(final AccountInfo author, final PatchLineComment c) {
super(author, c.getWrittenOn(), c.getMessage());
this.comment = c;
reply = new Button(PatchUtil.C.buttonReply());
reply.addClickHandler(this);
addButton(reply);
replyDone = new Button(PatchUtil.C.buttonReplyDone());
replyDone.addClickHandler(this);
addButton(replyDone);
}
@Override
public void onClick(final ClickEvent event) {
if (Gerrit.isSignedIn()) {
if (reply == event.getSource()) {
createReplyEditor();
} else if (replyDone == event.getSource()) {
cannedReply(PatchUtil.C.cannedReplyDone());
}
} else {
Gerrit.doSignIn(History.getToken());
}
}
private void createReplyEditor() {
final PatchLineComment newComment = newComment();
newComment.setMessage("");
createEditor(newComment).setFocus(true);
}
private void cannedReply(String message) {
CommentEditorPanel p = createEditor(null);
if (p == null) {
final PatchLineComment newComment = newComment();
newComment.setMessage(message);
enableButtons(false);
PatchUtil.DETAIL_SVC.saveDraft(newComment,
new GerritCallback<PatchLineComment>() {
public void onSuccess(final PatchLineComment result) {
enableButtons(true);
notifyDraftDelta(1);
createEditor(result).setOpen(false);
}
@Override
public void onFailure(Throwable caught) {
enableButtons(true);
super.onFailure(caught);
}
});
} else {
if (!p.isOpen()) {
p.setOpen(true);
}
p.setFocus(true);
}
}
private CommentEditorPanel createEditor(final PatchLineComment newComment) {
int row = rowOf(getElement());
int column = columnOf(getElement());
return createCommentEditor(row + 1, column, newComment);
}
private PatchLineComment newComment() {
PatchLineComment newComment =
new PatchLineComment(new PatchLineComment.Key(comment.getKey()
.getParentKey(), null), comment.getLine(), Gerrit
.getUserAccount().getId(), comment.getKey().get());
newComment.setSide(comment.getSide());
return newComment;
}
}
}