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//
// ProjectedSemanticHighlighting.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2015 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Linq;
using MonoDevelop.Ide.Editor.Highlighting;
using System.Collections.Generic;
namespace MonoDevelop.Ide.Editor.Projection
{
sealed class ProjectedSemanticHighlighting : SemanticHighlighting
{
List<Projection> projections;
public ProjectedSemanticHighlighting (TextEditor editor, DocumentContext documentContext, IEnumerable<Projection> projections) : base (editor, documentContext)
{
this.projections = new List<Projection> (projections);
foreach (var p in this.projections) {
if (p.ProjectedEditor.SemanticHighlighting == null)
continue;
p.ProjectedEditor.SemanticHighlighting.SemanticHighlightingUpdated += HandleSemanticHighlightingUpdated;
}
}
public void UpdateProjection (IEnumerable<Projection> projections)
{
foreach (var p in this.projections) {
if (p.ProjectedEditor.SemanticHighlighting == null)
continue;
p.ProjectedEditor.SemanticHighlighting.SemanticHighlightingUpdated -= HandleSemanticHighlightingUpdated;
}
this.projections = new List<Projection> (projections);
foreach (var p in this.projections) {
if (p.ProjectedEditor.SemanticHighlighting == null)
continue;
p.ProjectedEditor.SemanticHighlighting.SemanticHighlightingUpdated += HandleSemanticHighlightingUpdated;
}
}
void HandleSemanticHighlightingUpdated (object sender, EventArgs e)
{
NotifySemanticHighlightingUpdate ();
}
protected override void DocumentParsed ()
{
NotifySemanticHighlightingUpdate ();
}
public override IEnumerable<ColoredSegment> GetColoredSegments (MonoDevelop.Core.Text.ISegment segment)
{
foreach (Projection p in projections) {
foreach (var seg in p.ProjectedSegments) {
if (seg.IsInOriginal (segment)) {
if (p.ProjectedEditor.SemanticHighlighting == null)
continue;
int delta = segment.EndOffset - (seg.Offset + seg.Length);
int len = seg.Length;
if (delta < 0) {
len += delta;
}
foreach (var cs in p.ProjectedEditor.SemanticHighlighting.GetColoredSegments (new MonoDevelop.Core.Text.TextSegment (seg.ProjectedOffset, len))) {
yield return new ColoredSegment (cs.Offset - seg.ProjectedOffset + seg.Offset, cs.Length, cs.ColorStyleKey);
}
foreach (var cs in GetColoredSegments (MonoDevelop.Core.Text.TextSegment.FromBounds (seg.Offset + len, segment.EndOffset)))
yield return cs;
yield break;
}
}
}
}
}
}
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