5 // Igor Zelmanovich <igorz@mainsoft.com>
7 // (C) 2007 Mainsoft, Inc. http://www.mainsoft.com
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Collections.Generic;
33 using System.Web.UI.WebControls;
35 namespace System.Web.UI
37 public abstract class ScriptControl : WebControl, IScriptControl
39 ScriptManager _scriptManager;
41 protected ScriptControl () { }
43 ScriptManager ScriptManager {
45 if (_scriptManager == null) {
46 _scriptManager = ScriptManager.GetCurrent (Page);
47 if (_scriptManager == null)
48 throw new InvalidOperationException (String.Format ("The control with ID '{0}' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.", ID));
50 return _scriptManager;
54 protected abstract IEnumerable<ScriptDescriptor> GetScriptDescriptors ();
56 protected abstract IEnumerable<ScriptReference> GetScriptReferences ();
58 protected internal override void OnPreRender (EventArgs e) {
60 ScriptManager.RegisterScriptControl (this);
63 protected internal override void Render (HtmlTextWriter writer) {
64 ScriptManager.RegisterScriptDescriptors (this);
68 #region IScriptControl Members
70 IEnumerable<ScriptDescriptor> IScriptControl.GetScriptDescriptors () {
71 return GetScriptDescriptors ();
74 IEnumerable<ScriptReference> IScriptControl.GetScriptReferences () {
75 return GetScriptReferences ();