///////////////////////////////////////////////////////////////////////////
// Implementation
private void CreatePage()
{
Debug.Assert(page == null,
"Page should never have to be recreated");
page = (IStyleBuilderPage)Activator.CreateInstance(pageClass, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.CreateInstance, null, null, null);
}
/// <include file='doc\StyleBuilderForm.uex' path='docs/doc[@for="StyleBuilderForm.OnSelChangePageSelector"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
protected virtual void OnSelChangePageSelector(object source, TreeViewEventArgs e)
{
TreeNode tnodeSel = pageSelector.SelectedNode;
int treeIndex = tnodeSel.Index;
int pageIndex;
// map the tree index of the page (its position in the selector) to its
// index in the page array
for (pageIndex = 0; pageIndex < pages.Length; pageIndex++)
{
if (pages[pageIndex].GetUIIndex() == treeIndex)
{
break;
}
}
Debug.Assert((pageIndex >= 0) && (pageIndex < pages.Length),
"could not find page corresponding to node in page selector");
if (pageIndex == activePageIndex)
{
return;
}
StyleBuilderPageSite siteNew = pages[pageIndex];
IStyleBuilderPage pageNew = siteNew.GetPage();
// make sure the new page's window is created
IntPtr h = pageNew.GetPageControl().Handle;
// load the style into the page
siteNew.LoadPage(editingStyle);
// deactivate the current page if there is one
if (activePageIndex != -1)
{
StyleBuilderPageSite siteActive = pages[activePageIndex];
if (siteActive.GetPage().DeactivatePage(false, true) == false)
{
// the page cannot be deactivated
pageSelector.SelectedNode = pageSelector.Nodes[siteActive.GetUIIndex()];
return;
}
activePageIndex = -1;
}
// initialize the preview
fSupportsPreview = pageNew.SupportsPreview();
preview.ClearPreviewDocument(fSupportsPreview);
mshtmlControl.Visible = fSupportsPreview;
// initialize the state of the Help button
helpButton.Enabled = pageNew.SupportsHelp();
// activate the new page
activePageIndex = pageIndex;
pageNew.ActivatePage();
}
public void FreePage()
{
if (page != null)
{
if (page.GetPageControl() != null)
{
page.GetPageControl().Dispose();
}
page = null;
}
}
/// <include file='doc\StyleBuilderForm.uex' path='docs/doc[@for="StyleBuilderForm.PreProcessMessage"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override bool PreProcessMessage(ref Message msg)
{
if (activePageIndex != -1)
{
IStyleBuilderPage activePage = pages[activePageIndex].GetPage();
if (activePage.ProcessPageMessage(ref msg) == true)
{
return(true);
}
}
return(base.PreProcessMessage(ref msg));
}
/// <include file='doc\StyleBuilderForm.uex' path='docs/doc[@for="StyleBuilderForm.OnHelpRequested"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
protected override void OnHelpRequested(HelpEventArgs e)
{
if (activePageIndex != -1)
{
StyleBuilderPageSite siteActive = pages[activePageIndex];
IStyleBuilderPage pageActive = siteActive.GetPage();
if (pageActive.SupportsHelp())
{
pageActive.Help();
}
}
}
protected int uiIndex; // the page's index within the form UI
///////////////////////////////////////////////////////////////////////////
// Constructor
public StyleBuilderPageSite(Type pageClass)
{
Debug.Assert(pageClass != null, "invalid page class passed to StyleBuilderPageSite");
this.pageClass = pageClass;
page = null;
form = null;
inForm = false;
loaded = false;
dirty = false;
uiIndex = -1;
}
