| // 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.gwt.dom.client.Element; |
| import com.google.gwt.dom.client.Style.Unit; |
| import com.google.gwt.user.client.DOM; |
| import com.google.gwt.user.client.Timer; |
| import com.google.gwt.user.client.ui.Composite; |
| import com.google.gwt.user.client.ui.FlowPanel; |
| import com.google.gwt.user.client.ui.SimplePanel; |
| |
| import net.codemirror.lib.CodeMirror; |
| import net.codemirror.lib.Configuration; |
| import net.codemirror.lib.LineWidget; |
| import net.codemirror.lib.TextMarker.FromTo; |
| |
| /** |
| * LineWidget attached to a CodeMirror container. |
| * |
| * When a comment is placed on a line a CommentWidget is created on both sides. |
| * The group tracks all comment boxes on that same line, and also includes an |
| * empty padding element to keep subsequent lines vertically aligned. |
| */ |
| class CommentGroup extends Composite { |
| static void pair(CommentGroup a, CommentGroup b) { |
| a.peer = b; |
| b.peer = a; |
| } |
| |
| private final CommentManager manager; |
| private final CodeMirror cm; |
| private final int line; |
| private final FlowPanel comments; |
| private final Element padding; |
| private LineWidget lineWidget; |
| private Timer resizeTimer; |
| private CommentGroup peer; |
| |
| CommentGroup(CommentManager manager, CodeMirror cm, int line) { |
| this.manager = manager; |
| this.cm = cm; |
| this.line = line; |
| |
| comments = new FlowPanel(); |
| comments.setStyleName(Resources.I.style().commentWidgets()); |
| comments.setVisible(false); |
| initWidget(new SimplePanel(comments)); |
| |
| padding = DOM.createDiv(); |
| padding.setClassName(DiffTable.style.padding()); |
| ChunkManager.focusOnClick(padding, cm.side()); |
| getElement().appendChild(padding); |
| } |
| |
| CommentManager getCommentManager() { |
| return manager; |
| } |
| |
| CodeMirror getCm() { |
| return cm; |
| } |
| |
| CommentGroup getPeer() { |
| return peer; |
| } |
| |
| int getLine() { |
| return line; |
| } |
| |
| void add(PublishedBox box) { |
| comments.add(box); |
| comments.setVisible(true); |
| } |
| |
| void add(DraftBox box) { |
| PublishedBox p = box.getReplyToBox(); |
| if (p != null) { |
| for (int i = 0; i < getBoxCount(); i++) { |
| if (p == getCommentBox(i)) { |
| comments.insert(box, i + 1); |
| comments.setVisible(true); |
| resize(); |
| return; |
| } |
| } |
| } |
| comments.add(box); |
| comments.setVisible(true); |
| resize(); |
| } |
| |
| CommentBox getCommentBox(int i) { |
| return (CommentBox) comments.getWidget(i); |
| } |
| |
| int getBoxCount() { |
| return comments.getWidgetCount(); |
| } |
| |
| void openCloseLast() { |
| if (0 < getBoxCount()) { |
| CommentBox box = getCommentBox(getBoxCount() - 1); |
| box.setOpen(!box.isOpen()); |
| } |
| } |
| |
| void openCloseAll() { |
| boolean open = false; |
| for (int i = 0; i < getBoxCount(); i++) { |
| if (!getCommentBox(i).isOpen()) { |
| open = true; |
| break; |
| } |
| } |
| setOpenAll(open); |
| } |
| |
| void setOpenAll(boolean open) { |
| for (int i = 0; i < getBoxCount(); i++) { |
| getCommentBox(i).setOpen(open); |
| } |
| } |
| |
| void remove(DraftBox box) { |
| comments.remove(box); |
| comments.setVisible(0 < getBoxCount()); |
| |
| if (0 < getBoxCount() || 0 < peer.getBoxCount()) { |
| resize(); |
| } else { |
| detach(); |
| peer.detach(); |
| } |
| } |
| |
| private void detach() { |
| if (lineWidget != null) { |
| lineWidget.clear(); |
| lineWidget = null; |
| updateSelection(); |
| } |
| manager.clearLine(cm.side(), line, this); |
| removeFromParent(); |
| } |
| |
| void attachPair(DiffTable parent) { |
| if (lineWidget == null && peer.lineWidget == null) { |
| this.attach(parent); |
| peer.attach(parent); |
| } |
| } |
| |
| private void attach(DiffTable parent) { |
| parent.add(this); |
| lineWidget = cm.addLineWidget(Math.max(0, line - 1), getElement(), |
| Configuration.create() |
| .set("coverGutter", true) |
| .set("noHScroll", true) |
| .set("above", line <= 0) |
| .set("insertAt", 0)); |
| } |
| |
| void handleRedraw() { |
| lineWidget.onRedraw(new Runnable() { |
| @Override |
| public void run() { |
| if (canComputeHeight() && peer.canComputeHeight()) { |
| if (resizeTimer != null) { |
| resizeTimer.cancel(); |
| resizeTimer = null; |
| } |
| adjustPadding(CommentGroup.this, peer); |
| } else if (resizeTimer == null) { |
| resizeTimer = new Timer() { |
| @Override |
| public void run() { |
| if (canComputeHeight() && peer.canComputeHeight()) { |
| cancel(); |
| resizeTimer = null; |
| adjustPadding(CommentGroup.this, peer); |
| } |
| } |
| }; |
| resizeTimer.scheduleRepeating(5); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| protected void onUnload() { |
| super.onUnload(); |
| if (resizeTimer != null) { |
| resizeTimer.cancel(); |
| } |
| } |
| |
| void resize() { |
| if (lineWidget != null) { |
| adjustPadding(this, peer); |
| } |
| } |
| |
| private void updateSelection() { |
| if (cm.somethingSelected()) { |
| FromTo r = cm.getSelectedRange(); |
| if (r.getTo().getLine() >= line) { |
| cm.setSelection(r.getFrom(), r.getTo()); |
| } |
| } |
| } |
| |
| private boolean canComputeHeight() { |
| return !comments.isVisible() || comments.getOffsetHeight() > 0; |
| } |
| |
| private int computeHeight() { |
| if (comments.isVisible()) { |
| // Include margin-bottom: 5px from CSS class. |
| return comments.getOffsetHeight() + 5; |
| } |
| return 0; |
| } |
| |
| private static void adjustPadding(CommentGroup a, CommentGroup b) { |
| int apx = a.computeHeight(); |
| int bpx = b.computeHeight(); |
| int h = Math.max(apx, bpx); |
| a.padding.getStyle().setHeight(Math.max(0, h - apx), Unit.PX); |
| b.padding.getStyle().setHeight(Math.max(0, h - bpx), Unit.PX); |
| a.lineWidget.changed(); |
| b.lineWidget.changed(); |
| a.updateSelection(); |
| b.updateSelection(); |
| } |
| } |