90 lines
3.2 KiB
C#
90 lines
3.2 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.ComponentModel.Composition;
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using Microsoft.VisualStudio.Language.Intellisense;
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using Microsoft.VisualStudio.Text;
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using Microsoft.VisualStudio.Text.Editor;
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namespace dnSpy.Roslyn.Intellisense.QuickInfo {
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interface IQuickInfoTriggerServiceProvider {
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IQuickInfoTriggerService Create(ITextView textView);
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void CloseOtherSessions(IQuickInfoSession session);
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}
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interface IQuickInfoTriggerService {
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bool TryTrigger(SnapshotPoint triggerPoint, bool trackMouse);
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}
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[Export(typeof(IQuickInfoTriggerServiceProvider))]
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sealed class QuickInfoTriggerServiceProvider : IQuickInfoTriggerServiceProvider {
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readonly IQuickInfoBroker quickInfoBroker;
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[ImportingConstructor]
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QuickInfoTriggerServiceProvider(IQuickInfoBroker quickInfoBroker) => this.quickInfoBroker = quickInfoBroker;
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public IQuickInfoTriggerService Create(ITextView textView) {
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if (textView is null)
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throw new ArgumentNullException(nameof(textView));
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return textView.Properties.GetOrCreateSingletonProperty(typeof(QuickInfoTriggerService), () => new QuickInfoTriggerService(quickInfoBroker, textView));
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}
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public void CloseOtherSessions(IQuickInfoSession session) {
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foreach (var s in quickInfoBroker.GetSessions(session.TextView)) {
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if (s != session)
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s.Dismiss();
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}
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}
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}
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sealed class QuickInfoTriggerService : IQuickInfoTriggerService {
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readonly IQuickInfoBroker quickInfoBroker;
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readonly ITextView textView;
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QuickInfoSession? currentQuickInfoSession;
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public QuickInfoTriggerService(IQuickInfoBroker quickInfoBroker, ITextView textView) {
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this.quickInfoBroker = quickInfoBroker ?? throw new ArgumentNullException(nameof(quickInfoBroker));
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this.textView = textView ?? throw new ArgumentNullException(nameof(textView));
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}
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public bool TryTrigger(SnapshotPoint point, bool trackMouse) {
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if (point.Snapshot is null)
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throw new ArgumentException();
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var info = QuickInfoState.Create(point.Snapshot);
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if (info is null)
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return false;
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currentQuickInfoSession?.Dispose();
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currentQuickInfoSession = new QuickInfoSession(info.Value, point, trackMouse, quickInfoBroker, textView);
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currentQuickInfoSession.Disposed += QuickInfoSession_Disposed;
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currentQuickInfoSession.Start();
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return true;
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}
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void QuickInfoSession_Disposed(object? sender, EventArgs e) {
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var session = (QuickInfoSession)sender!;
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session.Disposed -= QuickInfoSession_Disposed;
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if (session == currentQuickInfoSession)
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currentQuickInfoSession = null;
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}
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}
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}
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