/
RichEditAPIUtils.cs
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/
RichEditAPIUtils.cs
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using DevExpress.Utils;
using DevExpress.XtraRichEdit;
using DevExpress.XtraRichEdit.Internal;
using System;
namespace RichEditAPISample
{
public class ExampleCodeEditor
{
readonly IRichEditControl codeEditorCs;
readonly IRichEditControl codeEditorVb;
ExampleLanguage current;
int forceTextChangesCounter;
bool richEditTextChanged = false;
DateTime lastExampleCodeModifiedTime = DateTime.Now;
public ExampleCodeEditor(IRichEditControl codeEditorCs, IRichEditControl codeEditorVb)
{
this.codeEditorCs = codeEditorCs;
this.codeEditorVb = codeEditorVb;
this.codeEditorCs.InnerControl.InitializeDocument += new System.EventHandler(this.InitializeSyntaxHighlightForCs);
this.codeEditorVb.InnerControl.InitializeDocument += new System.EventHandler(this.InitializeSyntaxHighlightForVb);
}
public InnerRichEditControl CurrentCodeEditor
{
get
{
if (CurrentExampleLanguage == ExampleLanguage.Csharp)
return codeEditorCs.InnerControl;
else
return codeEditorVb.InnerControl;
}
}
public DateTime LastExampleCodeModifiedTime { get { return lastExampleCodeModifiedTime; } }
public bool RichEditTextChanged { get { return richEditTextChanged; } }
public ExampleLanguage CurrentExampleLanguage
{
get { return current; }
set
{
try
{
UnsubscribeRichEditEvents();
current = value;
}
finally
{
SubscribeRichEditEvent();
forceTextChangesCounter = 0; // actualy where are no changes in that richEdit (CurrentCodeEditor)
richEditTextChanged = true;
}
}
}
void richEditControl_TextChanged(object sender, EventArgs e)
{
if (forceTextChangesCounter <= 0)
{
richEditTextChanged = true;
lastExampleCodeModifiedTime = DateTime.Now;
}
else
forceTextChangesCounter--;
}
public string ShowExample(CodeExample oldExample, CodeExample newExample)
{
InnerRichEditControl richEditControlCs = codeEditorCs.InnerControl;
InnerRichEditControl richEditControlVb = codeEditorVb.InnerControl;
if (oldExample != null)
{
//save edited example
//oldExample.CodeCS = richEditControlCs.Text;
//oldExample.CodeVB = richEditControlVb.Text;
}
string exampleCode = String.Empty;
if (newExample != null)
{
try
{
forceTextChangesCounter = 2;
exampleCode = (CurrentExampleLanguage == ExampleLanguage.Csharp) ? newExample.CodeCS : newExample.CodeVB;
richEditControlCs.Text = newExample.CodeCS;
if(newExample.AdditionalModulesCS != null) {
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("//---------- Additional modules");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText(newExample.AdditionalModulesCS);
}
if(newExample.HasCustomAction) {
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("//---------- Custom action handler");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText("\r\n");
richEditControlCs.Document.AppendText(newExample.CustomActionHandlerCS);
}
richEditControlVb.Text = newExample.CodeVB;
if(newExample.AdditionalModulesVB!= null) {
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("'---------- Additional modules");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText(newExample.AdditionalModulesVB);
}
if(newExample.HasCustomAction) {
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("'---------- Custom action handler");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText("\r\n");
richEditControlVb.Document.AppendText(newExample.CustomActionHandlerVB);
}
richEditTextChanged = false;
}
finally
{
richEditTextChanged = true;
}
}
return exampleCode;
}
void UpdatePageBackground(bool codeEvaluated)
{
CurrentCodeEditor.Document.SetPageBackground((codeEvaluated) ? DXColor.Empty : DXColor.FromArgb(0xFF, 0xBC, 0xC8), true);
}
internal void BeforeCompile()
{
UnsubscribeRichEditEvents();
}
internal void AfterCompile(bool codeExcecutedWithoutExceptions)
{
UpdatePageBackground(codeExcecutedWithoutExceptions);
richEditTextChanged = false;
ResetLastExampleModifiedTime();
SubscribeRichEditEvent();
}
public void ResetLastExampleModifiedTime()
{
lastExampleCodeModifiedTime = DateTime.Now;
}
private void UnsubscribeRichEditEvents()
{
CurrentCodeEditor.ContentChanged -= richEditControl_TextChanged;
}
void SubscribeRichEditEvent()
{
CurrentCodeEditor.ContentChanged += richEditControl_TextChanged;
}
void InitializeSyntaxHighlightForCs(object sender, EventArgs e)
{
SyntaxHightlightInitializeHelper syntaxHightlightInitializator = new SyntaxHightlightInitializeHelper();
syntaxHightlightInitializator.Initialize(codeEditorCs, CodeExampleDemoUtils.GetCodeExampleFileExtension(ExampleLanguage.Csharp));
DisableRichEditFeatures(codeEditorCs);
}
void InitializeSyntaxHighlightForVb(object sender, EventArgs e)
{
SyntaxHightlightInitializeHelper syntaxHightlightInitializator = new SyntaxHightlightInitializeHelper();
syntaxHightlightInitializator.Initialize(codeEditorVb, CodeExampleDemoUtils.GetCodeExampleFileExtension(ExampleLanguage.VB));
DisableRichEditFeatures(codeEditorVb);
}
void DisableRichEditFeatures(IRichEditControl codeEditor)
{
RichEditControlOptionsBase options = codeEditor.InnerDocumentServer.Options;
options.DocumentCapabilities.Hyperlinks = DocumentCapability.Disabled;
options.DocumentCapabilities.Numbering.Bulleted = DocumentCapability.Disabled;
options.DocumentCapabilities.Numbering.Simple = DocumentCapability.Disabled;
options.DocumentCapabilities.Numbering.MultiLevel = DocumentCapability.Disabled;
options.DocumentCapabilities.Tables = DocumentCapability.Disabled;
//options.DocumentCapabilities.CharacterFormatting = DocumentCapability.Disabled;
//options.DocumentCapabilities.ParagraphFormatting = DocumentCapability.Disabled;
options.DocumentCapabilities.Bookmarks = DocumentCapability.Disabled;
options.DocumentCapabilities.CharacterStyle = DocumentCapability.Disabled;
options.DocumentCapabilities.ParagraphStyle = DocumentCapability.Disabled;
}
}
}