blob: 7caf76d74b9a496c698ce768c80047867c9e1e50 [file] [log] [blame]
// Copyright (C) 2013 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.diff;
import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.change.ChangeScreen2;
import com.google.gerrit.client.changes.ChangeApi;
import com.google.gerrit.client.changes.ChangeInfo;
import com.google.gerrit.client.changes.ChangeInfo.RevisionInfo;
import com.google.gerrit.client.changes.ChangeList;
import com.google.gerrit.client.changes.CommentApi;
import com.google.gerrit.client.changes.CommentInfo;
import com.google.gerrit.client.diff.DiffInfo.Region;
import com.google.gerrit.client.diff.DiffInfo.Span;
import com.google.gerrit.client.diff.LineMapper.LineOnOtherInfo;
import com.google.gerrit.client.diff.PaddingManager.LinePaddingWidgetWrapper;
import com.google.gerrit.client.diff.PaddingManager.PaddingWidgetWrapper;
import com.google.gerrit.client.patches.PatchUtil;
import com.google.gerrit.client.patches.SkippedLine;
import com.google.gerrit.client.projects.ConfigInfoCache;
import com.google.gerrit.client.rpc.CallbackGroup;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.rpc.NativeMap;
import com.google.gerrit.client.rpc.RestApi;
import com.google.gerrit.client.rpc.ScreenLoadCallback;
import com.google.gerrit.client.ui.CommentLinkProcessor;
import com.google.gerrit.client.ui.Screen;
import com.google.gerrit.common.PageLinks;
import com.google.gerrit.common.changes.ListChangesOption;
import com.google.gerrit.common.changes.Side;
import com.google.gerrit.reviewdb.client.AccountDiffPreference;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.core.client.JsArrayString;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwtexpui.globalkey.client.GlobalKey;
import com.google.gwtexpui.globalkey.client.KeyCommand;
import com.google.gwtexpui.globalkey.client.KeyCommandSet;
import com.google.gwtexpui.globalkey.client.ShowHelpCommand;
import net.codemirror.lib.CodeMirror;
import net.codemirror.lib.CodeMirror.EventHandler;
import net.codemirror.lib.CodeMirror.GutterClickHandler;
import net.codemirror.lib.CodeMirror.LineClassWhere;
import net.codemirror.lib.CodeMirror.LineHandle;
import net.codemirror.lib.CodeMirror.RenderLineHandler;
import net.codemirror.lib.CodeMirror.Viewport;
import net.codemirror.lib.Configuration;
import net.codemirror.lib.KeyMap;
import net.codemirror.lib.LineCharacter;
import net.codemirror.lib.LineWidget;
import net.codemirror.lib.ModeInjector;
import net.codemirror.lib.TextMarker.FromTo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class SideBySide2 extends Screen {
interface Binder extends UiBinder<FlowPanel, SideBySide2> {}
private static final Binder uiBinder = GWT.create(Binder.class);
private static final JsArrayString EMPTY =
JavaScriptObject.createArray().cast();
@UiField(provided = true)
Header header;
@UiField(provided = true)
DiffTable diffTable;
private final Change.Id changeId;
private final PatchSet.Id base;
private final PatchSet.Id revision;
private final String path;
private AccountDiffPreference pref;
private CodeMirror cmA;
private CodeMirror cmB;
private CodeMirror lastFocused;
private ScrollSynchronizer scrollingGlue;
private HandlerRegistration resizeHandler;
private JsArray<CommentInfo> publishedBase;
private JsArray<CommentInfo> publishedRevision;
private JsArray<CommentInfo> draftsBase;
private JsArray<CommentInfo> draftsRevision;
private DiffInfo diff;
private LineMapper mapper;
private CommentLinkProcessor commentLinkProcessor;
private Map<String, PublishedBox> publishedMap;
private Map<LineHandle, CommentBox> lineActiveBoxMap;
private Map<LineHandle, List<PublishedBox>> linePublishedBoxesMap;
private Map<LineHandle, PaddingManager> linePaddingManagerMap;
private Map<LineHandle, LinePaddingWidgetWrapper> linePaddingOnOtherSideMap;
private List<DiffChunkInfo> diffChunks;
private List<SkippedLine> skips;
private int context;
private KeyCommandSet keysNavigation;
private KeyCommandSet keysAction;
private KeyCommandSet keysComment;
private KeyCommandSet keysOpenByEnter;
private List<HandlerRegistration> handlers;
public SideBySide2(
PatchSet.Id base,
PatchSet.Id revision,
String path) {
this.base = base;
this.revision = revision;
this.changeId = revision.getParentKey();
this.path = path;
pref = Gerrit.getAccountDiffPreference();
if (pref == null) {
pref = AccountDiffPreference.createDefault(null);
}
context = pref.getContext();
handlers = new ArrayList<HandlerRegistration>(6);
// TODO: Re-implement necessary GlobalKey bindings.
addDomHandler(GlobalKey.STOP_PROPAGATION, KeyPressEvent.getType());
keysNavigation = new KeyCommandSet(Gerrit.C.sectionNavigation());
header = new Header(keysNavigation, base, revision, path);
diffTable = new DiffTable(this, base, revision, path);
add(uiBinder.createAndBindUi(this));
}
@Override
protected void onInitUI() {
super.onInitUI();
setHeaderVisible(false);
}
@Override
protected void onLoad() {
super.onLoad();
CallbackGroup cmGroup = new CallbackGroup();
CodeMirror.initLibrary(cmGroup.add(CallbackGroup.<Void> emptyCallback()));
final CallbackGroup group = new CallbackGroup();
final AsyncCallback<Void> modeInjectorCb =
group.add(CallbackGroup.<Void> emptyCallback());
DiffApi.diff(revision, path)
.base(base)
.wholeFile()
.intraline(pref.isIntralineDifference())
.ignoreWhitespace(pref.getIgnoreWhitespace())
.get(cmGroup.addFinal(new GerritCallback<DiffInfo>() {
@Override
public void onSuccess(DiffInfo diffInfo) {
diff = diffInfo;
new ModeInjector()
.add(getContentType(diff.meta_a()))
.add(getContentType(diff.meta_b()))
.inject(modeInjectorCb);
}
}));
if (base != null) {
CommentApi.comments(base, group.add(getCommentCallback(DisplaySide.A, false)));
}
CommentApi.comments(revision, group.add(getCommentCallback(DisplaySide.B, false)));
if (Gerrit.isSignedIn()) {
if (base != null) {
CommentApi.drafts(base, group.add(getCommentCallback(DisplaySide.A, true)));
}
CommentApi.drafts(revision, group.add(getCommentCallback(DisplaySide.B, true)));
}
ConfigInfoCache.get(changeId, group.addFinal(
new ScreenLoadCallback<ConfigInfoCache.Entry>(SideBySide2.this) {
@Override
protected void preDisplay(ConfigInfoCache.Entry result) {
commentLinkProcessor = result.getCommentLinkProcessor();
setTheme(result.getTheme());
DiffInfo diffInfo = diff;
diff = null;
display(diffInfo);
}
}));
RestApi call = ChangeApi.detail(changeId.get());
ChangeList.addOptions(call, EnumSet.of(
ListChangesOption.ALL_REVISIONS));
call.get(new GerritCallback<ChangeInfo>() {
@Override
public void onSuccess(ChangeInfo info) {
info.revisions().copyKeysIntoChildren("name");
JsArray<RevisionInfo> list = info.revisions().values();
RevisionInfo.sortRevisionInfoByNumber(list);
diffTable.setUpPatchSetNav(list);
}});
}
@Override
public void onShowView() {
super.onShowView();
resizeCodeMirror();
Window.enableScrolling(false);
cmA.setOption("viewportMargin", 10);
cmB.setOption("viewportMargin", 10);
cmB.setCursor(LineCharacter.create(0));
cmB.focus();
prefetchNextFile();
}
@Override
protected void onUnload() {
super.onUnload();
removeKeyHandlerRegs();
if (resizeHandler != null) {
resizeHandler.removeHandler();
resizeHandler = null;
}
if (cmA != null) {
cmA.getWrapperElement().removeFromParent();
}
if (cmB != null) {
cmB.getWrapperElement().removeFromParent();
}
Window.enableScrolling(true);
Gerrit.setHeaderVisible(true);
}
private void removeKeyHandlerRegs() {
for (HandlerRegistration h : handlers) {
h.removeHandler();
}
handlers.clear();
}
private void registerCmEvents(final CodeMirror cm) {
cm.on("cursorActivity", updateActiveLine(cm));
cm.on("gutterClick", onGutterClick(cm));
cm.on("renderLine", resizeLinePadding(getSideFromCm(cm)));
cm.on("viewportChange", adjustGutters(cm));
cm.on("focus", new Runnable() {
@Override
public void run() {
lastFocused = cm;
updateActiveLine(cm).run();
}
});
cm.on("contextmenu", new EventHandler() {
@Override
public void handle(CodeMirror instance, NativeEvent event) {
CodeMirror.setObjectProperty(event, "codemirrorIgnore", true);
lastFocused.focus();
}
});
cm.addKeyMap(KeyMap.create()
.on("'a'", upToChange(true))
.on("'u'", upToChange(false))
.on("'r'", toggleReviewed())
.on("'o'", toggleOpenBox(cm))
.on("Enter", toggleOpenBox(cm))
.on("'c'", insertNewDraft(cm))
.on("Alt-U", new Runnable() {
public void run() {
cm.getInputField().blur();
clearActiveLine(cm);
clearActiveLine(otherCm(cm));
}
})
.on("[", new Runnable() {
@Override
public void run() {
(header.hasPrev() ? header.prev : header.up).go();
}
})
.on("]", new Runnable() {
@Override
public void run() {
(header.hasNext() ? header.next : header.up).go();
}
})
.on("Shift-Alt-/", new Runnable() {
@Override
public void run() {
new ShowHelpCommand().onKeyPress(null);
}
})
.on("N", maybeNextVimSearch(cm))
.on("P", diffChunkNav(cm, true))
.on("Shift-O", openClosePublished(cm))
.on("Shift-Left", flipCursorSide(cm, true))
.on("Shift-Right", flipCursorSide(cm, false)));
}
@Override
public void registerKeys() {
super.registerKeys();
keysNavigation.add(new UpToChangeCommand2(revision, 0, 'u'));
keysNavigation.add(new NoOpKeyCommand(0, 'j', PatchUtil.C.lineNext()));
keysNavigation.add(new NoOpKeyCommand(0, 'k', PatchUtil.C.linePrev()));
keysAction = new KeyCommandSet(Gerrit.C.sectionActions());
keysAction.add(new NoOpKeyCommand(0, 'o', PatchUtil.C.expandComment()));
keysAction.add(new KeyCommand(0, 'r', PatchUtil.C.toggleReviewed()) {
@Override
public void onKeyPress(KeyPressEvent event) {
toggleReviewed().run();
}
});
keysAction.add(new KeyCommand(0, 'a', PatchUtil.C.openReply()) {
@Override
public void onKeyPress(KeyPressEvent event) {
upToChange(true).run();
}
});
keysOpenByEnter = new KeyCommandSet(Gerrit.C.sectionNavigation());
keysOpenByEnter.add(new NoOpKeyCommand(0, KeyCodes.KEY_ENTER,
PatchUtil.C.expandComment()));
if (Gerrit.isSignedIn()) {
keysAction.add(new NoOpKeyCommand(0, 'c', PatchUtil.C.commentInsert()));
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;
}
removeKeyHandlerRegs();
handlers.add(GlobalKey.add(this, keysNavigation));
handlers.add(GlobalKey.add(this, keysAction));
handlers.add(GlobalKey.add(this, keysOpenByEnter));
if (keysComment != null) {
handlers.add(GlobalKey.add(this, keysComment));
}
}
private GerritCallback<NativeMap<JsArray<CommentInfo>>> getCommentCallback(
final DisplaySide side, final boolean toDrafts) {
return new GerritCallback<NativeMap<JsArray<CommentInfo>>>() {
@Override
public void onSuccess(NativeMap<JsArray<CommentInfo>> result) {
JsArray<CommentInfo> in = result.get(path);
if (in != null) {
if (toDrafts) {
if (side == DisplaySide.A) {
draftsBase = in;
} else {
draftsRevision = in;
}
} else {
if (side == DisplaySide.A) {
publishedBase = in;
} else {
publishedRevision = in;
}
}
}
}
};
}
private void display(DiffInfo diffInfo) {
cmA = displaySide(diffInfo.meta_a(), diffInfo.text_a(), diffTable.cmA);
cmB = displaySide(diffInfo.meta_b(), diffInfo.text_b(), diffTable.cmB);
skips = new ArrayList<SkippedLine>();
linePaddingOnOtherSideMap = new HashMap<LineHandle, LinePaddingWidgetWrapper>();
diffChunks = new ArrayList<DiffChunkInfo>();
render(diffInfo);
lineActiveBoxMap = new HashMap<LineHandle, CommentBox>();
linePublishedBoxesMap = new HashMap<LineHandle, List<PublishedBox>>();
linePaddingManagerMap = new HashMap<LineHandle, PaddingManager>();
if (publishedBase != null || publishedRevision != null) {
publishedMap = new HashMap<String, PublishedBox>();
}
if (publishedBase != null) {
renderPublished(publishedBase);
}
if (publishedRevision != null) {
renderPublished(publishedRevision);
}
if (draftsBase != null) {
renderDrafts(draftsBase);
}
if (draftsRevision != null) {
renderDrafts(draftsRevision);
}
renderSkips();
registerCmEvents(cmA);
registerCmEvents(cmB);
scrollingGlue = GWT.create(ScrollSynchronizer.class);
scrollingGlue.init(diffTable, cmA, cmB, mapper);
resizeHandler = Window.addResizeHandler(new ResizeHandler() {
@Override
public void onResize(ResizeEvent event) {
resizeCodeMirror();
}
});
if (pref.isShowTabs()) {
diffTable.addStyleName(DiffTable.style.showtabs());
}
}
private CodeMirror displaySide(DiffInfo.FileMeta meta, String contents,
Element ele) {
if (meta == null) {
contents = "";
}
Configuration cfg = Configuration.create()
.set("readOnly", true)
.set("lineNumbers", true)
.set("tabSize", pref.getTabSize())
.set("mode", getContentType(meta))
.set("lineWrapping", false)
.set("styleSelectedText", true)
.set("showTrailingSpace", pref.isShowWhitespaceErrors())
.set("keyMap", "vim_ro")
.set("value", contents)
/**
* Without this, CM won't put line widgets too far down in the right spot,
* and padding widgets will be informed of wrong offset height. Reset to
* 10 (default) after initial rendering.
*/
.setInfinity("viewportMargin");
int h = Gerrit.getHeaderFooterHeight() + 18 /* reviewed estimate */;
CodeMirror cm = CodeMirror.create(ele, cfg);
cm.setHeight(Window.getClientHeight() - h);
return cm;
}
private void render(DiffInfo diff) {
JsArray<Region> regions = diff.content();
String diffColor = diff.meta_a() == null || diff.meta_b() == null
? DiffTable.style.intralineBg()
: DiffTable.style.diff();
mapper = new LineMapper();
for (int i = 0; i < regions.length(); i++) {
Region current = regions.get(i);
int origLineA = mapper.getLineA();
int origLineB = mapper.getLineB();
if (current.ab() != null) { // Common
int length = current.ab().length();
mapper.appendCommon(length);
if (i == 0 && length > context + 1) {
skips.add(new SkippedLine(0, 0, length - context));
} else if (i == regions.length() - 1 && length > context + 1) {
skips.add(new SkippedLine(origLineA + context, origLineB + context,
length - context));
} else if (length > 2 * context + 1) {
skips.add(new SkippedLine(origLineA + context, origLineB + context,
length - 2 * context));
}
} else { // Insert, Delete or Edit
JsArrayString currentA = current.a() == null ? EMPTY : current.a();
JsArrayString currentB = current.b() == null ? EMPTY : current.b();
int aLength = currentA.length();
int bLength = currentB.length();
String color = currentA == EMPTY || currentB == EMPTY
? diffColor
: DiffTable.style.intralineBg();
colorLines(cmA, color, origLineA, aLength);
colorLines(cmB, color, origLineB, bLength);
int commonCnt = Math.min(aLength, bLength);
mapper.appendCommon(commonCnt);
if (aLength < bLength) { // Edit with insertion
int insertCnt = bLength - aLength;
mapper.appendInsert(insertCnt);
} else if (aLength > bLength) { // Edit with deletion
int deleteCnt = aLength - bLength;
mapper.appendDelete(deleteCnt);
}
int chunkEndA = mapper.getLineA() - 1;
int chunkEndB = mapper.getLineB() - 1;
if (aLength > 0) {
addDiffChunkAndPadding(cmB, chunkEndB, chunkEndA, aLength, bLength > 0);
}
if (bLength > 0) {
addDiffChunkAndPadding(cmA, chunkEndA, chunkEndB, bLength, aLength > 0);
}
markEdit(cmA, currentA, current.edit_a(), origLineA);
markEdit(cmB, currentB, current.edit_b(), origLineB);
if (aLength == 0) {
diffTable.sidePanel.addGutter(cmB, origLineB, SidePanel.GutterType.INSERT);
} else if (bLength == 0) {
diffTable.sidePanel.addGutter(cmA, origLineA, SidePanel.GutterType.DELETE);
} else {
diffTable.sidePanel.addGutter(cmB, origLineB, SidePanel.GutterType.EDIT);
}
}
}
}
private DraftBox addNewDraft(CodeMirror cm, int line, FromTo fromTo) {
DisplaySide side = getSideFromCm(cm);
return addDraftBox(CommentInfo.createRange(
path,
getStoredSideFromDisplaySide(side),
line + 1,
null,
null,
CommentRange.create(fromTo)), side);
}
CommentInfo createReply(CommentInfo replyTo) {
if (!replyTo.has_line() && replyTo.range() == null) {
return CommentInfo.createFile(path, replyTo.side(), replyTo.id(), null);
} else {
return CommentInfo.createRange(path, replyTo.side(), replyTo.line(),
replyTo.id(), null, replyTo.range());
}
}
DraftBox addDraftBox(CommentInfo info, DisplaySide side) {
CodeMirror cm = getCmFromSide(side);
final DraftBox box = new DraftBox(this, cm, side, commentLinkProcessor,
getPatchSetIdFromSide(side), info);
if (info.id() == null) {
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
@Override
public void execute() {
box.setOpen(true);
box.setEdit(true);
}
});
}
if (!info.has_line()) {
return box;
}
addCommentBox(info, box);
LineHandle handle = cm.getLineHandle(info.line() - 1);
lineActiveBoxMap.put(handle, box);
return box;
}
CommentBox addCommentBox(CommentInfo info, CommentBox box) {
diffTable.add(box);
DisplaySide side = box.getSide();
CodeMirror cm = getCmFromSide(side);
CodeMirror other = otherCm(cm);
int line = info.line() - 1; // CommentInfo is 1-based, but CM is 0-based
LineHandle handle = cm.getLineHandle(line);
PaddingManager manager;
if (linePaddingManagerMap.containsKey(handle)) {
manager = linePaddingManagerMap.get(handle);
} else {
// Estimated height at 28px, fixed by deferring after display
manager = new PaddingManager(addPaddingWidget(cm, line, 0, Unit.PX, 0));
linePaddingManagerMap.put(handle, manager);
}
int lineToPad = mapper.lineOnOther(side, line).getLine();
LineHandle otherHandle = other.getLineHandle(lineToPad);
DiffChunkInfo myChunk = getDiffChunk(side, line);
DiffChunkInfo otherChunk = getDiffChunk(getSideFromCm(other), lineToPad);
PaddingManager otherManager;
if (linePaddingManagerMap.containsKey(otherHandle)) {
otherManager = linePaddingManagerMap.get(otherHandle);
} else {
otherManager =
new PaddingManager(addPaddingWidget(other, lineToPad, 0, Unit.PX, 0));
linePaddingManagerMap.put(otherHandle, otherManager);
}
if ((myChunk == null && otherChunk == null) || (myChunk != null && otherChunk != null)) {
PaddingManager.link(manager, otherManager);
}
int index = manager.getCurrentCount();
manager.insert(box, index);
Configuration config = Configuration.create()
.set("coverGutter", true)
.set("insertAt", index);
LineWidget boxWidget = cm.addLineWidget(line, box.getElement(), config);
box.setPaddingManager(manager);
box.setSelfWidgetWrapper(new PaddingWidgetWrapper(boxWidget, box.getElement()));
box.setParent(this);
if (otherChunk == null) {
box.setDiffChunkInfo(myChunk);
}
box.setGutterWrapper(diffTable.sidePanel.addGutter(cm, info.line() - 1,
box instanceof DraftBox ?
SidePanel.GutterType.DRAFT
: SidePanel.GutterType.COMMENT));
return box;
}
void removeDraft(DraftBox box, int line) {
LineHandle handle = getCmFromSide(box.getSide()).getLineHandle(line);
lineActiveBoxMap.remove(handle);
if (linePublishedBoxesMap.containsKey(handle)) {
List<PublishedBox> list = linePublishedBoxesMap.get(handle);
lineActiveBoxMap.put(handle, list.get(list.size() - 1));
}
}
void addFileCommentBox(CommentBox box) {
diffTable.addFileCommentBox(box);
}
void removeFileCommentBox(DraftBox box) {
diffTable.onRemoveDraftBox(box);
}
private List<CommentInfo> sortComment(JsArray<CommentInfo> unsorted) {
List<CommentInfo> sorted = new ArrayList<CommentInfo>();
for (int i = 0; i < unsorted.length(); i++) {
sorted.add(unsorted.get(i));
}
Collections.sort(sorted, new Comparator<CommentInfo>() {
@Override
public int compare(CommentInfo o1, CommentInfo o2) {
return o1.updated().compareTo(o2.updated());
}
});
return sorted;
}
private void renderPublished(JsArray<CommentInfo> published) {
List<CommentInfo> sorted = sortComment(published);
for (CommentInfo info : sorted) {
DisplaySide side;
if (info.side() == Side.PARENT) {
if (base != null) {
continue;
}
side = DisplaySide.A;
} else {
side = published == publishedBase ? DisplaySide.A : DisplaySide.B;
}
CodeMirror cm = getCmFromSide(side);
PublishedBox box = new PublishedBox(this, cm, side, commentLinkProcessor,
getPatchSetIdFromSide(side), info);
publishedMap.put(info.id(), box);
if (!info.has_line()) {
diffTable.addFileCommentBox(box);
continue;
}
int line = info.line() - 1;
LineHandle handle = cm.getLineHandle(line);
if (linePublishedBoxesMap.containsKey(handle)) {
linePublishedBoxesMap.get(handle).add(box);
} else {
List<PublishedBox> list = new ArrayList<PublishedBox>();
list.add(box);
linePublishedBoxesMap.put(handle, list);
}
lineActiveBoxMap.put(handle, box);
addCommentBox(info, box);
}
}
private void renderDrafts(JsArray<CommentInfo> drafts) {
List<CommentInfo> sorted = sortComment(drafts);
for (CommentInfo info : sorted) {
DisplaySide side;
if (info.side() == Side.PARENT) {
if (base != null) {
continue;
}
side = DisplaySide.A;
} else {
side = drafts == draftsBase ? DisplaySide.A : DisplaySide.B;
}
DraftBox box = new DraftBox(
this, getCmFromSide(side), side, commentLinkProcessor,
getPatchSetIdFromSide(side), info);
if (publishedBase != null || publishedRevision != null) {
PublishedBox replyToBox = publishedMap.get(info.in_reply_to());
if (replyToBox != null) {
replyToBox.registerReplyBox(box);
}
}
if (!info.has_line()) {
diffTable.addFileCommentBox(box);
continue;
}
lineActiveBoxMap.put(
getCmFromSide(side).getLineHandle(info.line() - 1), box);
addCommentBox(info, box);
}
}
private void renderSkips() {
if (context == AccountDiffPreference.WHOLE_FILE_CONTEXT) {
return;
}
/**
* TODO: This is not optimal, but shouldn't bee too costly in most cases.
* Maybe rewrite after done keeping track of diff chunk positions.
*/
for (CommentBox box : lineActiveBoxMap.values()) {
List<SkippedLine> temp = new ArrayList<SkippedLine>();
for (SkippedLine skip : skips) {
CommentInfo info = box.getCommentInfo();
int startLine = box.getSide() == DisplaySide.A
? skip.getStartA()
: skip.getStartB();
int boxLine = info.line();
int deltaBefore = boxLine - startLine;
int deltaAfter = startLine + skip.getSize() - boxLine;
if (deltaBefore < -context || deltaAfter < -context) {
temp.add(skip); // Size guaranteed to be greater than 1
} else if (deltaBefore > context && deltaAfter > context) {
SkippedLine before = new SkippedLine(
skip.getStartA(), skip.getStartB(),
skip.getSize() - deltaAfter - context);
skip.incrementStart(deltaBefore + context);
checkAndAddSkip(temp, before);
checkAndAddSkip(temp, skip);
} else if (deltaAfter > context) {
skip.incrementStart(deltaBefore + context);
checkAndAddSkip(temp, skip);
} else if (deltaBefore > context) {
skip.reduceSize(deltaAfter + context);
checkAndAddSkip(temp, skip);
}
}
if (temp.isEmpty()) {
return;
}
skips = temp;
}
for (SkippedLine skip : skips) {
SkipBar barA = renderSkipHelper(cmA, skip);
SkipBar barB = renderSkipHelper(cmB, skip);
SkipBar.link(barA, barB);
}
}
private void checkAndAddSkip(List<SkippedLine> list, SkippedLine toAdd) {
if (toAdd.getSize() > 1) {
list.add(toAdd);
}
}
private SkipBar renderSkipHelper(CodeMirror cm, SkippedLine skip) {
int size = skip.getSize();
int markStart = cm == cmA ? skip.getStartA() - 1 : skip.getStartB() - 1;
int markEnd = markStart + size;
SkipBar bar = new SkipBar(cm);
diffTable.add(bar);
/**
* Due to CodeMirror limitation, there's no way to make the first
* line disappear completely, and CodeMirror doesn't like manually
* setting the display of a line to "none". The workaround here uses
* inline widget for the first line and regular line widgets for others.
*/
Configuration markerConfig;
if (markStart == -1) {
markerConfig = Configuration.create()
.set("inclusiveLeft", true)
.set("inclusiveRight", true)
.set("replacedWith", bar.getElement());
cm.addLineClass(0, LineClassWhere.WRAP, DiffTable.style.hideNumber());
} else {
markerConfig = Configuration.create().set("collapsed", true);
Configuration config = Configuration.create().set("coverGutter", true);
bar.setWidget(cm.addLineWidget(markStart, bar.getElement(), config));
}
bar.setMarker(cm.markText(CodeMirror.pos(markStart),
CodeMirror.pos(markEnd), markerConfig), size);
return bar;
}
private CodeMirror otherCm(CodeMirror me) {
return me == cmA ? cmB : cmA;
}
private PatchSet.Id getPatchSetIdFromSide(DisplaySide side) {
return side == DisplaySide.A && base != null ? base : revision;
}
private CodeMirror getCmFromSide(DisplaySide side) {
return side == DisplaySide.A ? cmA : cmB;
}
private DisplaySide getSideFromCm(CodeMirror cm) {
return cm == cmA ? DisplaySide.A : DisplaySide.B;
}
Side getStoredSideFromDisplaySide(DisplaySide side) {
return side == DisplaySide.A && base == null ? Side.PARENT : Side.REVISION;
}
private void markEdit(CodeMirror cm, JsArrayString lines,
JsArray<Span> edits, int startLine) {
if (edits == null) {
return;
}
EditIterator iter = new EditIterator(lines, startLine);
Configuration intralineBgOpt = Configuration.create()
.set("className", DiffTable.style.intralineBg())
.set("readOnly", true);
Configuration diffOpt = Configuration.create()
.set("className", DiffTable.style.diff())
.set("readOnly", true);
LineCharacter last = CodeMirror.pos(0, 0);
for (int i = 0; i < edits.length(); i++) {
Span span = edits.get(i);
LineCharacter from = iter.advance(span.skip());
LineCharacter to = iter.advance(span.mark());
int fromLine = from.getLine();
if (last.getLine() == fromLine) {
cm.markText(last, from, intralineBgOpt);
} else {
cm.markText(CodeMirror.pos(fromLine, 0), from, intralineBgOpt);
}
cm.markText(from, to, diffOpt);
last = to;
for (int line = fromLine; line < to.getLine(); line++) {
cm.addLineClass(line, LineClassWhere.BACKGROUND,
DiffTable.style.diff());
}
}
}
private void colorLines(CodeMirror cm, String color, int line, int cnt) {
for (int i = 0; i < cnt; i++) {
cm.addLineClass(line + i, LineClassWhere.WRAP, color);
}
}
private void addDiffChunkAndPadding(CodeMirror cmToPad, int lineToPad,
int lineOnOther, int chunkSize, boolean edit) {
CodeMirror otherCm = otherCm(cmToPad);
linePaddingOnOtherSideMap.put(otherCm.getLineHandle(lineOnOther),
new LinePaddingWidgetWrapper(addPaddingWidget(cmToPad,
lineToPad, 0, Unit.EM, null), lineToPad, chunkSize));
diffChunks.add(new DiffChunkInfo(getSideFromCm(otherCm),
lineOnOther - chunkSize + 1, lineOnOther, edit));
}
private PaddingWidgetWrapper addPaddingWidget(CodeMirror cm,
int line, double height, Unit unit, Integer index) {
Element div = DOM.createDiv();
div.getStyle().setHeight(height, unit);
Configuration config = Configuration.create()
.set("coverGutter", true)
.set("above", line == -1);
if (index != null) {
config = config.set("insertAt", index);
}
LineWidget widget = cm.addLineWidget(line == -1 ? 0 : line, div, config);
return new PaddingWidgetWrapper(widget, div);
}
private void clearActiveLine(CodeMirror cm) {
if (cm.hasActiveLine()) {
LineHandle activeLine = cm.getActiveLine();
cm.removeLineClass(activeLine,
LineClassWhere.WRAP, DiffTable.style.activeLine());
cm.setActiveLine(null);
}
}
private Runnable adjustGutters(final CodeMirror cm) {
return new Runnable() {
@Override
public void run() {
Viewport fromTo = cm.getViewport();
int size = fromTo.getTo() - fromTo.getFrom() + 1;
if (cm.getOldViewportSize() == size) {
return;
}
cm.setOldViewportSize(size);
diffTable.sidePanel.adjustGutters(cmB);
}
};
}
private Runnable updateActiveLine(final CodeMirror cm) {
final CodeMirror other = otherCm(cm);
return new Runnable() {
public void run() {
/**
* The rendering of active lines has to be deferred. Reflow
* caused by adding and removing styles chokes Firefox when arrow
* key (or j/k) is held down. Performance on Chrome is fine
* without the deferral.
*/
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
@Override
public void execute() {
LineHandle handle = cm.getLineHandleVisualStart(
cm.getCursor("end").getLine());
if (cm.hasActiveLine() && cm.getActiveLine().equals(handle)) {
return;
}
clearActiveLine(cm);
clearActiveLine(other);
cm.setActiveLine(handle);
cm.addLineClass(
handle, LineClassWhere.WRAP, DiffTable.style.activeLine());
LineOnOtherInfo info =
mapper.lineOnOther(getSideFromCm(cm), cm.getLineNumber(handle));
if (info.isAligned()) {
LineHandle oLineHandle = other.getLineHandle(info.getLine());
other.setActiveLine(oLineHandle);
other.addLineClass(oLineHandle, LineClassWhere.WRAP,
DiffTable.style.activeLine());
}
}
});
}
};
}
private GutterClickHandler onGutterClick(final CodeMirror cm) {
return new GutterClickHandler() {
@Override
public void handle(CodeMirror instance, int line, String gutter,
NativeEvent clickEvent) {
if (!(cm.hasActiveLine() &&
cm.getLineNumber(cm.getActiveLine()) == line)) {
cm.setCursor(LineCharacter.create(line));
}
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
@Override
public void execute() {
insertNewDraft(cm).run();
}
});
}
};
}
private Runnable insertNewDraft(final CodeMirror cm) {
if (!Gerrit.isSignedIn()) {
return new Runnable() {
@Override
public void run() {
Gerrit.doSignIn(getToken());
}
};
}
return new Runnable() {
public void run() {
LineHandle handle = cm.getActiveLine();
int line = cm.getLineNumber(handle);
CommentBox box = lineActiveBoxMap.get(handle);
FromTo fromTo = cm.getSelectedRange();
if (cm.somethingSelected()) {
lineActiveBoxMap.put(handle,
addNewDraft(cm, line, fromTo.getTo().getLine() == line ? fromTo : null));
} else if (box == null) {
lineActiveBoxMap.put(handle, addNewDraft(cm, line, null));
} else if (box instanceof DraftBox) {
((DraftBox) box).setEdit(true);
} else {
((PublishedBox) box).doReply();
}
}
};
}
private Runnable toggleOpenBox(final CodeMirror cm) {
return new Runnable() {
public void run() {
CommentBox box = lineActiveBoxMap.get(cm.getActiveLine());
if (box != null) {
box.setOpen(!box.isOpen());
}
}
};
}
private Runnable upToChange(final boolean openReplyBox) {
return new Runnable() {
public void run() {
String rev = String.valueOf(revision.get());
Gerrit.display(
PageLinks.toChange(changeId, rev),
new ChangeScreen2(changeId, rev, openReplyBox));
}
};
}
private Runnable openClosePublished(final CodeMirror cm) {
return new Runnable() {
@Override
public void run() {
if (cm.hasActiveLine()) {
List<PublishedBox> list =
linePublishedBoxesMap.get(cm.getActiveLine());
if (list == null) {
return;
}
boolean open = false;
for (PublishedBox box : list) {
if (!box.isOpen()) {
open = true;
break;
}
}
for (PublishedBox box : list) {
box.setOpen(open);
}
}
}
};
}
private Runnable toggleReviewed() {
return new Runnable() {
public void run() {
header.setReviewed(!header.isReviewed());
}
};
}
private Runnable flipCursorSide(final CodeMirror cm, final boolean toLeft) {
return new Runnable() {
public void run() {
if (cm.hasActiveLine() && (toLeft && cm == cmB || !toLeft && cm == cmA)) {
CodeMirror other = otherCm(cm);
other.setCursor(LineCharacter.create(
mapper.lineOnOther(
getSideFromCm(cm), cm.getLineNumber(cm.getActiveLine())).getLine()));
other.focus();
}
}
};
}
private Runnable maybeNextVimSearch(final CodeMirror cm) {
return new Runnable() {
@Override
public void run() {
if (cm.hasVimSearchHighlight()) {
CodeMirror.handleVimKey(cm, "n");
} else {
diffChunkNav(cm, false).run();
}
}
};
}
private Runnable diffChunkNav(final CodeMirror cm, final boolean prev) {
return new Runnable() {
@Override
public void run() {
int line = cm.hasActiveLine() ? cm.getLineNumber(cm.getActiveLine()) : 0;
int res = Collections.binarySearch(
diffChunks,
new DiffChunkInfo(getSideFromCm(cm), line, 0, false),
getDiffChunkComparator());
if (res < 0) {
res = -res - (prev ? 1 : 2);
}
res = res + (prev ? -1 : 1);
DiffChunkInfo lookUp = diffChunks.get(getWrapAroundDiffChunkIndex(res));
// If edit, skip the deletion chunk and set focus on the insertion one.
if (lookUp.isEdit() && lookUp.getSide() == DisplaySide.A) {
res = res + (prev ? -1 : 1);
}
DiffChunkInfo target = diffChunks.get(getWrapAroundDiffChunkIndex(res));
CodeMirror targetCm = getCmFromSide(target.getSide());
targetCm.setCursor(LineCharacter.create(target.getStart()));
targetCm.focus();
targetCm.scrollToY(Math.max(
0,
targetCm.heightAtLine(target.getStart(), "local") -
0.5 * cmB.getScrollbarV().getClientHeight()));
}
};
}
/**
* Diff chunks are ordered by their starting lines. If it's a deletion,
* use its corresponding line on the revision side for comparison. In
* the edit case, put the deletion chunk right before the insertion chunk.
* This placement guarantees well-ordering.
*/
private Comparator<DiffChunkInfo> getDiffChunkComparator() {
return new Comparator<DiffChunkInfo>() {
@Override
public int compare(DiffChunkInfo o1, DiffChunkInfo o2) {
if (o1.getSide() == o2.getSide()) {
return o1.getStart() - o2.getStart();
} else if (o1.getSide() == DisplaySide.A) {
int comp = mapper.lineOnOther(o1.getSide(), o1.getStart())
.getLine() - o2.getStart();
return comp == 0 ? -1 : comp;
} else {
int comp = o1.getStart() -
mapper.lineOnOther(o2.getSide(), o2.getStart()).getLine();
return comp == 0 ? 1 : comp;
}
}
};
}
private DiffChunkInfo getDiffChunk(DisplaySide side, int line) {
int res = Collections.binarySearch(
diffChunks,
new DiffChunkInfo(side, line, 0, false), // Dummy DiffChunkInfo
getDiffChunkComparator());
if (res >= 0) {
return diffChunks.get(res);
} else { // The line might be within a DiffChunk
res = -res - 1;
if (res > 0) {
DiffChunkInfo info = diffChunks.get(res - 1);
if (info.getSide() == side && info.getStart() <= line &&
line <= info.getEnd()) {
return info;
}
}
}
return null;
}
private int getWrapAroundDiffChunkIndex(int index) {
return (index + diffChunks.size()) % diffChunks.size();
}
void resizePaddingOnOtherSide(DisplaySide mySide, int line) {
CodeMirror cm = getCmFromSide(mySide);
LineHandle handle = cm.getLineHandle(line);
final LinePaddingWidgetWrapper otherWrapper = linePaddingOnOtherSideMap.get(handle);
double myChunkHeight = cm.heightAtLine(line + 1) -
cm.heightAtLine(line - otherWrapper.getChunkLength() + 1);
Element otherPadding = otherWrapper.getElement();
int otherPaddingHeight = otherPadding.getOffsetHeight();
CodeMirror otherCm = otherCm(cm);
int otherLine = otherWrapper.getOtherLine();
LineHandle other = otherCm.getLineHandle(otherLine);
if (linePaddingOnOtherSideMap.containsKey(other)) {
LinePaddingWidgetWrapper myWrapper = linePaddingOnOtherSideMap.get(other);
Element myPadding = linePaddingOnOtherSideMap.get(other).getElement();
int myPaddingHeight = myPadding.getOffsetHeight();
myChunkHeight -= myPaddingHeight;
double otherChunkHeight = otherCm.heightAtLine(otherLine + 1) -
otherCm.heightAtLine(otherLine - myWrapper.getChunkLength() + 1) -
otherPaddingHeight;
double delta = myChunkHeight - otherChunkHeight;
if (delta > 0) {
if (myPaddingHeight != 0) {
setHeightInPx(myPadding, 0);
myWrapper.getWidget().changed();
}
if (otherPaddingHeight != delta) {
setHeightInPx(otherPadding, delta);
otherWrapper.getWidget().changed();
}
} else {
if (myPaddingHeight != -delta) {
setHeightInPx(myPadding, -delta);
myWrapper.getWidget().changed();
}
if (otherPaddingHeight != 0) {
setHeightInPx(otherPadding, 0);
otherWrapper.getWidget().changed();
}
}
} else if (otherPaddingHeight != myChunkHeight) {
setHeightInPx(otherPadding, myChunkHeight);
otherWrapper.getWidget().changed();
}
}
// TODO: Maybe integrate this with PaddingManager.
private RenderLineHandler resizeLinePadding(final DisplaySide side) {
return new RenderLineHandler() {
@Override
public void handle(final CodeMirror instance, final LineHandle handle,
Element element) {
if (lineActiveBoxMap.containsKey(handle)) {
lineActiveBoxMap.get(handle).resizePaddingWidget();
}
if (linePaddingOnOtherSideMap.containsKey(handle)) {
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
@Override
public void execute() {
resizePaddingOnOtherSide(side, instance.getLineNumber(handle));
}
});
}
}
};
}
void resizeCodeMirror() {
int rest = Gerrit.getHeaderFooterHeight()
+ header.getOffsetHeight()
+ diffTable.getHeaderHeight()
+ 10; // Estimate
int h = Window.getClientHeight() - rest;
cmA.setHeight(h);
cmB.setHeight(h);
cmA.refresh();
cmB.refresh();
diffTable.sidePanel.adjustGutters(cmB);
}
static void setHeightInPx(Element ele, double height) {
ele.getStyle().setHeight(height, Unit.PX);
}
private String getContentType(DiffInfo.FileMeta meta) {
return pref.isSyntaxHighlighting()
&& meta != null
&& meta.content_type() != null
? ModeInjector.getContentType(meta.content_type())
: null;
}
CodeMirror getCmA() {
return cmA;
}
CodeMirror getCmB() {
return cmB;
}
private void prefetchNextFile() {
String nextPath = header.getNextPath();
if (nextPath != null) {
DiffApi.diff(revision, nextPath)
.base(base)
.wholeFile()
.intraline(pref.isIntralineDifference())
.ignoreWhitespace(pref.getIgnoreWhitespace())
.get(new AsyncCallback<DiffInfo>() {
@Override
public void onSuccess(DiffInfo info) {
new ModeInjector()
.add(getContentType(info.meta_a()))
.add(getContentType(info.meta_b()))
.inject(CallbackGroup.<Void> emptyCallback());
}
@Override
public void onFailure(Throwable caught) {
}
});
}
}
}