From 84adefa331c4159d432d22840663c38f155cd4c1 Mon Sep 17 00:00:00 2001
From: Erlang/OTP <otp@erlang.org>
Date: Fri, 20 Nov 2009 14:54:40 +0000
Subject: The R13B03 release.

---
 lib/wx/examples/demo/ex_treeCtrl.erl | 121 +++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 lib/wx/examples/demo/ex_treeCtrl.erl

(limited to 'lib/wx/examples/demo/ex_treeCtrl.erl')

diff --git a/lib/wx/examples/demo/ex_treeCtrl.erl b/lib/wx/examples/demo/ex_treeCtrl.erl
new file mode 100644
index 0000000000..fa40795393
--- /dev/null
+++ b/lib/wx/examples/demo/ex_treeCtrl.erl
@@ -0,0 +1,121 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+
+-module(ex_treeCtrl).
+
+-behaviour(wx_object).
+
+%% Client API
+-export([start/1]).
+
+%% wx_object callbacks
+-export([init/1, terminate/2,  code_change/3,
+	 handle_info/2, handle_call/3, handle_event/2]).
+
+-include_lib("wx/include/wx.hrl").
+
+-record(state, 
+	{
+	  parent,
+	  config
+	}).
+
+start(Config) ->
+    wx_object:start_link(?MODULE, Config, []).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+init(Config) ->
+    wx:batch(fun() -> do_init(Config) end).
+
+do_init(Config) ->
+    Parent = proplists:get_value(parent, Config),  
+    Panel = wxPanel:new(Parent, []),
+
+    %% Setup sizers
+    MainSizer = wxBoxSizer:new(?wxVERTICAL),
+    Sizer = wxStaticBoxSizer:new(?wxVERTICAL, Panel, 
+				 [{label, "wxTreeCtrl"}]),
+
+    %% Setup treeCtrl
+    TreeCtrl = wxTreeCtrl:new(Panel, []),
+    RootId = wxTreeCtrl:addRoot(TreeCtrl, "Root"),
+    %% Name the first items
+    Items = ["item "++integer_to_list(Int)||
+		Int <- lists:seq(1,10)],
+    %% Create the first items in the treeCtrl
+    SubItems = [{wxTreeCtrl:appendItem(TreeCtrl, RootId, Item), Item}||
+		   Item <- Items],
+    %% Create sub items
+    [wxTreeCtrl:appendItem(TreeCtrl, ItemId, Item++" sub item "++integer_to_list(Int))||
+	 {ItemId, Item} <- SubItems, Int <- lists:seq(1,10)],
+    wxTreeCtrl:expand(TreeCtrl, RootId),
+
+    %% Add to sizers
+    Options = [{flag, ?wxEXPAND}, {proportion, 1}],
+    wxSizer:add(Sizer, TreeCtrl, Options),
+    wxSizer:add(MainSizer, Sizer, Options),
+
+    wxTreeCtrl:connect(TreeCtrl, command_tree_item_collapsed),
+    wxTreeCtrl:connect(TreeCtrl, command_tree_item_expanded),
+    wxTreeCtrl:connect(TreeCtrl, command_tree_sel_changed),
+    wxPanel:setSizer(Panel, MainSizer),
+    {Panel, #state{parent=Panel, config=Config}}.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Async Events are handled in handle_event as in handle_info
+handle_event(#wx{event = #wxTree{type = command_tree_item_collapsed,
+				 item = Item},
+		 obj = TreeCtrl},
+	     State = #state{}) ->
+    ItemText = wxTreeCtrl:getItemText(TreeCtrl, Item),
+    demo:format(State#state.config, "You have collapsed ~p.\n", [ItemText]),
+    {noreply, State};
+handle_event(#wx{event = #wxTree{type = command_tree_item_expanded,
+				 item = Item},
+		 obj = TreeCtrl},
+	     State = #state{}) ->
+    ItemText = wxTreeCtrl:getItemText(TreeCtrl, Item),
+    demo:format(State#state.config, "You have expanded ~p.\n", [ItemText]),
+    {noreply, State};
+handle_event(#wx{event = #wxTree{type = command_tree_sel_changed,
+				 item = Item},
+		 obj = TreeCtrl},
+	     State = #state{}) ->
+    ItemText = wxTreeCtrl:getItemText(TreeCtrl, Item),
+    demo:format(State#state.config, "You have selected ~p.\n", [ItemText]),
+    {noreply, State}.
+
+%% Callbacks handled as normal gen_server callbacks
+handle_info(Msg, State) ->
+    demo:format(State#state.config, "Got Info ~p\n", [Msg]),
+    {noreply, State}.
+
+handle_call(Msg, _From, State) ->
+    demo:format(State#state.config, "Got Call ~p\n", [Msg]),
+    {reply,{error, nyi}, State}.
+
+code_change(_, _, State) ->
+    {stop, ignore, State}.
+
+terminate(_Reason, _State) ->
+    ok.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Local functions
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
-- 
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