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EnsureVisible() also expands the parent items

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1959 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-03-23 13:50:29 +00:00
parent 882eefb1f7
commit f65635b5c9
3 changed files with 63 additions and 33 deletions
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45
samples/treectrl/treetest.cpp
View File

@@ -61,6 +61,7 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(TreeTest_DeleteChildren, MyFrame::OnDeleteChildren)
EVT_MENU(TreeTest_DeleteAll, MyFrame::OnDeleteAll)
EVT_MENU(TreeTest_Recreate, MyFrame::OnRecreate)
EVT_MENU(TreeTest_EnsureVisible, MyFrame::OnEnsureVisible)
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
@@ -129,6 +130,8 @@ MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
tree_menu->AppendSeparator();
tree_menu->Append(TreeTest_Bold, "Make item &bold");
tree_menu->Append(TreeTest_UnBold, "Make item &not bold");
tree_menu->AppendSeparator();
tree_menu->Append(TreeTest_EnsureVisible, "Make the last item &visible");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
@@ -262,6 +265,11 @@ void MyFrame::OnRecreate(wxCommandEvent& event)
m_treeCtrl->AddTestItemsToTree(3, 2);
}
void MyFrame::OnEnsureVisible(wxCommandEvent& event)
{
m_treeCtrl->DoEnsureVisible();
}
// MyTreeCtrl implementation
IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
@@ -316,24 +324,31 @@ void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
size_t depth,
size_t folder)
{
if ( depth > 0 )
{
wxString str;
for ( size_t n = 0; n < numChildren; n++ )
if ( depth > 0 )
{
// at depth 1 elements won't have any more children
if (depth == 1)
str.Printf("%s child %d.%d", "File", folder, n + 1);
else
str.Printf("%s child %d","Folder", n + 1);
wxString str;
for ( size_t n = 0; n < numChildren; n++ )
{
// at depth 1 elements won't have any more children
if (depth == 1)
str.Printf("%s child %d.%d", "File", folder, n + 1);
else
str.Printf("%s child %d", "Folder", n + 1);
int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
wxTreeItemId id = AppendItem(idParent, str, image, image,
new MyTreeItemData(str));
AddItemsRecursively(id, numChildren, depth - 1, n + 1);
int image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
wxTreeItemId id = AppendItem(idParent, str, image, image,
new MyTreeItemData(str));
// remember the last child for OnEnsureVisible()
if ( depth == 1 && n == numChildren - 1 )
{
m_lastItem = id;
}
AddItemsRecursively(id, numChildren, depth - 1, n + 1);
}
}
}
//else: done!
//else: done!
}
void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,

7
samples/treectrl/treetest.h
View File

@@ -65,6 +65,7 @@ public:
void DoSortChildren(const wxTreeItemId& item, bool reverse = FALSE)
{ m_reverseSort = reverse; wxTreeCtrl::SortChildren(item); }
void DoEnsureVisible() { EnsureVisible(m_lastItem); }
protected:
virtual int OnCompareItems(const wxTreeItemId& item1,
@@ -78,6 +79,7 @@ private:
wxImageList *m_imageListNormal;
bool m_reverseSort; // flag for OnCompareItems
wxTreeItemId m_lastItem; // for OnEnsureVisible()
// NB: due to an ugly wxMSW hack you _must_ use DECLARE_DYNAMIC_CLASS()
// if you want your overloaded OnCompareItems() to be called.
@@ -107,6 +109,8 @@ public:
void OnSetBold(wxCommandEvent& WXUNUSED(event)) { DoSetBold(TRUE); }
void OnClearBold(wxCommandEvent& WXUNUSED(event)) { DoSetBold(FALSE); }
void OnEnsureVisible(wxCommandEvent& event);
void OnRename(wxCommandEvent& event);
void OnSort(wxCommandEvent& event) { DoSort(); }
void OnSortRev(wxCommandEvent& event) { DoSort(TRUE); }
@@ -136,5 +140,6 @@ enum
TreeTest_DeleteChildren,
TreeTest_DeleteAll,
TreeTest_Recreate,
TreeTest_EnsureVisible,
TreeTest_Ctrl = 100
};
};