public static int RegisterViewer(ICustomHelpViewer newViewer, out IHelpManager Manager)
{
try
{
HelpSystem.AddViewer(newViewer);
}
catch
{
Manager = null;
return(0);
}
Manager = HelpSystem;
return(1);
}
public void ShowHelp(string HelpKeyword, string HelpFileName)
{
List <ICustomHelpViewer> providesHelp = new List <ICustomHelpViewer>();
foreach (var viewer in helpViewers)
{
int topics = viewer.UnderstandsKeyword(HelpKeyword);
if (topics > 0)
{
providesHelp.Add(viewer);
}
}
if (providesHelp.Count == 0)
{
return;
}
if (helpSelector == null || providesHelp.Count == 1)
{
providesHelp[0].ShowHelp(HelpKeyword);
}
else
{
TStringList keywords = new TStringList();
keywords.Duplicates = TDuplicates.dupIgnore;
foreach (var viewer in providesHelp)
{
TStringList temp = new TStringList(viewer.GetHelpStrings(HelpKeyword));
int count = temp.Count;
for (int i = 0; i < count; i++)
{
temp.Objects[i] = viewer;
}
keywords.AddStrings(temp);
}
int index = helpSelector.SelectKeyword(keywords);
if (index < 0)
{
return;
}
string helpstring = keywords[index];
ICustomHelpViewer selectedViewer = (ICustomHelpViewer)keywords.Objects[index];
selectedViewer.ShowHelp(helpstring);
}
}
public void ShowTableOfContents()
{
List <ICustomHelpViewer> providesHelp = new List <ICustomHelpViewer>();
foreach (var viewer in helpViewers)
{
if (viewer.CanShowTableOfContents())
{
providesHelp.Add(viewer);
}
}
if (providesHelp.Count == 0)
{
return;
}
if (helpSelector == null || providesHelp.Count == 1)
{
providesHelp[0].ShowTableOfContents();
}
else
{
TStringList viewerNames = new TStringList();
viewerNames.Duplicates = TDuplicates.dupIgnore;
foreach (var viewer in providesHelp)
{
viewerNames.AddObject(viewer.GetViewerName(), viewer);
}
int index = helpSelector.TableOfContents(viewerNames);
if (index < 0)
{
return;
}
ICustomHelpViewer selectedViewer = (ICustomHelpViewer)viewerNames.Objects[index];
selectedViewer.ShowTableOfContents();
}
}
internal void AddViewer(ICustomHelpViewer newViewer)
{
helpViewers.Add(newViewer);
newViewer.NotifyID(helpViewers.Count);
}
