com.google.gerrit.client.diff.UnifiedCommentGroup.java Source code

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Here is the source code for com.google.gerrit.client.diff.UnifiedCommentGroup.java

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// Copyright (C) 2014 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.user.client.Timer;
import net.codemirror.lib.CodeMirror;

/**
 * LineWidget attached to a CodeMirror container.
 *
 * <p>When a comment is placed on a line a CommentWidget is created. The group tracks all comment
 * boxes on a line in unified diff view.
 */
class UnifiedCommentGroup extends CommentGroup {
    UnifiedCommentGroup(UnifiedCommentManager manager, CodeMirror cm, DisplaySide side, int line) {
        super(manager, cm, side, line);
    }

    @Override
    void remove(DraftBox box) {
        super.remove(box);

        if (0 < getBoxCount()) {
            resize();
        } else {
            detach();
        }
    }

    @Override
    void init(DiffTable parent) {
        if (getLineWidget() == null) {
            attach(parent);
        }
    }

    @Override
    void handleRedraw() {
        getLineWidget().onRedraw(() -> {
            if (canComputeHeight()) {
                if (getResizeTimer() != null) {
                    getResizeTimer().cancel();
                    setResizeTimer(null);
                }
                reportHeightChange();
            } else if (getResizeTimer() == null) {
                setResizeTimer(new Timer() {
                    @Override
                    public void run() {
                        if (canComputeHeight()) {
                            cancel();
                            setResizeTimer(null);
                            reportHeightChange();
                        }
                    }
                });
                getResizeTimer().scheduleRepeating(5);
            }
        });
    }

    @Override
    void resize() {
        if (getLineWidget() != null) {
            reportHeightChange();
        }
    }

    private void reportHeightChange() {
        getLineWidget().changed();
        updateSelection();
    }
}