94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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namespace Ooui
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{
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public abstract class Session
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{
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protected readonly Element element;
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protected readonly double initialWidth;
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protected readonly double initialHeight;
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protected readonly HashSet<string> createdIds;
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protected readonly List<Message> queuedMessages = new List<Message> ();
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protected readonly bool disposeElementAfterSession;
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readonly Action<string, Exception> errorLogger;
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public Session (Element element, bool disposeElementAfterSession, double initialWidth, double initialHeight, Action<string, Exception> errorLogger)
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{
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this.errorLogger = errorLogger;
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this.element = element;
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this.disposeElementAfterSession = disposeElementAfterSession;
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this.initialWidth = initialWidth;
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this.initialHeight = initialHeight;
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//
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// Keep a list of all the elements for which we've transmitted the initial state
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//
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createdIds = new HashSet<string> {
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"window",
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"document",
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"document.body",
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};
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}
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void QueueStateMessagesLocked (EventTarget target)
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{
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if (target == null) return;
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var created = false;
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foreach (var m in target.StateMessages) {
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if (m.MessageType == MessageType.Create) {
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createdIds.Add (m.TargetId);
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created = true;
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}
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if (created) {
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QueueMessageLocked (m);
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}
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}
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}
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protected void QueueMessageLocked (Message message)
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{
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//
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// Make sure all the referenced objects have been created
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//
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if (!createdIds.Contains (message.TargetId)) {
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QueueStateMessagesLocked (element.GetElementById (message.TargetId));
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}
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if (message.Value is EventTarget ve) {
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if (!createdIds.Contains (ve.Id)) {
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QueueStateMessagesLocked (ve);
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}
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}
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else if (message.Value is Array a) {
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for (var i = 0; i < a.Length; i++) {
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// Console.WriteLine ($"A{i} = {a.GetValue(i)}");
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if (a.GetValue (i) is EventTarget e && !createdIds.Contains (e.Id)) {
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QueueStateMessagesLocked (e);
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}
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}
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}
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//
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// Add it to the queue
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//
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//Console.WriteLine ($"QM {message.MessageType} {message.TargetId} {message.Key} {message.Value}");
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queuedMessages.Add (message);
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}
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protected virtual void QueueMessage (Message message)
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{
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lock (queuedMessages) {
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QueueMessageLocked (message);
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}
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}
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protected void Error (string message, Exception ex)
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{
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errorLogger?.Invoke (message, ex);
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}
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}
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}
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