public void ShowOrCreateForm(Object formObject)
{
bool isSyntaxHelp = (formObject is Type && ((Type)formObject) == typeof(SyntaxHelp));
bool isTextEditableInterface = (formObject is TextEditableInterface);
bool isTopic = (formObject is Preprocessor.TopicPreprocessor);
bool canHaveMultipleFormInstances = (formObject is ItemListForm || formObject is FilteredTopicsViewerForm);
// multiple windows of some forms are not allowed
if (!canHaveMultipleFormInstances)
{
foreach (Form form in MdiChildren)
{
if ((isSyntaxHelp && form is SyntaxHelp) ||
(isTextEditableInterface && form is TextEditForm && ((TextEditForm)form).IsOfType(((TextEditableInterface)formObject))) ||
(isTopic && form is TextEditForm && ((TextEditForm )form).PreprocessedTopic == (Preprocessor.TopicPreprocessor)formObject))
{
form.Activate();
return;
}
}
}
// open a new form
Form newForm = null;
if (canHaveMultipleFormInstances)
{
newForm = (Form)formObject;
}
else if (isSyntaxHelp)
{
newForm = new SyntaxHelp();
}
else if (isTextEditableInterface)
{
newForm = new TextEditForm((TextEditableInterface)formObject, _helpComponents);
}
else if (isTopic)
{
newForm = new TextEditForm(new Topic((Preprocessor.TopicPreprocessor)formObject), _helpComponents);
}
if (newForm != null)
{
newForm.MdiParent = this;
newForm.Show();
}
}
private void helpContextMenuItem_Click(object sender, EventArgs e)
{
if (this.ActiveMdiChild != null && this.ActiveMdiChild is TextEditForm)
{
TextEditForm textEditForm = (TextEditForm)this.ActiveMdiChild;
if (textEditForm.PreprocessedTopic == null)
{
textEditForm.ShowHelp();
return;
}
}
ShowOrCreateForm(typeof(SyntaxHelp));
}
public void ShowOrCreateForm(Object formObject)
{
bool isSyntaxHelp = ( formObject is Type && ((Type)formObject) == typeof(SyntaxHelp) );
bool isItemListForm = ( formObject is ItemListForm );
bool isTextEditableInterface = ( formObject is TextEditableInterface );
bool isTopic = ( formObject is Preprocessor.TopicPreprocessor );
// multiple item lists are allowed but otherwise multiple windows of a given type are not
foreach( Form form in MdiChildren )
{
if( ( isSyntaxHelp && form is SyntaxHelp ) ||
( isTextEditableInterface && form is TextEditForm && ((TextEditForm)form).IsOfType(((TextEditableInterface)formObject)) ) ||
( isTopic && form is TextEditForm && ((TextEditForm )form).PreprocessedTopic == (Preprocessor.TopicPreprocessor)formObject ) )
{
form.Activate();
return;
}
}
// open a new form
Form newForm = null;
if( isSyntaxHelp )
newForm = new SyntaxHelp();
else if( isItemListForm )
newForm = (Form)formObject;
else if( isTextEditableInterface )
newForm = new TextEditForm((TextEditableInterface)formObject,_helpComponents);
else if( isTopic )
newForm = new TextEditForm(new Topic((Preprocessor.TopicPreprocessor)formObject),_helpComponents);
if( newForm != null )
{
newForm.MdiParent = this;
newForm.Show();
}
}