AS 3.0 & WebService & Tree control Bind to hierarchical data?

What is the trick to get the results of a call to a
webservice that returns a hierarchical XML SOAP document to map
directly to a Tree Control's dataProvider property?
In the debugger, I can see that lastResult is an ObjectProxy
which has a couple of properties and one of them is an
ArrayCollection as I expect. However, I can't figure out how to use
this result with a Tree control and the dataProvider property so
that I can navigate thru the hierarchy returned.
TIA
George

Yeah this is using the embedded scripting. I need to change this to show the final sql vs. the script that is being used.
-kris

Similar Messages

Several branches in tree control binding. How?

I have set up a tree control binding which represents a master-detail relationship between two database-tables in my ADF-application.
In my JSP i show all rows from the "customer" table and all related "order" rows for that customer. It looks like this:
Customer1
- Order 1
- Order 2
- Order 3
Customer2
- Order 1
Customer3
- Order 1
- Order 2
This works very well, but now I need to add a new detail-table to this relationship; For every customer I want to show all orders and all documents related to that customer. The result should be something like this:
Customer1
- Order 1
- Order 2
- Order 3
- Document 1
Customer2
- Order 1
- Document 1
- Document 2
Customer3
- Order 1
- Order 2
- Document 1
- Document 2
- Document 3
Is there a way to set up a tree binding with one root and several branches? I need to have them in the same binding because I only want to loop the root-nodes once. I tried to add another rule to my existing tree binding, but how can I refer to which children I want to display in my jsp code (i.e orders or customers)? I loop through my rootnodes with the following code:
<c:forEach var="Row" items="${bindings.DCTree.rootNodeBinding.children}">
How can I refer to my "orders"-children og "documents" children in order to choose which branch to loop?
A bit difficult to explain my problem, but I hope anyone can help me out!
Thanx
Tom

Repost

Items in Tree control move around when data is submitted using custom ItemRenderer

I'm working on a Tree control with an XMLListCollection as
its dataProvider.
The dataProvider has information looking like this :
quote:
<?xml version='1.0' encoding='utf-8'?>
<INFO>
<FIELD label="STR_USER_NAME"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_USER_EMAIL"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_OPTIONAL"
type="branch"
value="0"
>
<FIELD label="STR_USER_ADDRESS"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_USER_POSTAL_CODE"
type="text"
value=""
>
</FIELD>
</FIELD>
</INFO>
So in the Tree control I'd like the information to show up
with a label and
an
editable textbox for each item :
[Label] [textbox]
To do this I made a tree like this :
quote:
<mx:Tree id="userTree"
editable="true"
rendererIsEditor="true"
editorDataField="curVal"
itemRenderer="{new ClassFactory(ItemRendererUser)}"
itemEditEnd="e_ProcessData(event);"
dataDescriptor="{new DataDescriptorUsers()}"
showRoot="false"
verticalScrollPolicy="{ScrollPolicy.AUTO}"
/>
where the e_ProcessData() function looks like this (I used
http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/js/html/wwhelp.htm?href=c
elleditor_073_16.html#202105 as a guide) :
quote:
public function e_ProcessData(event:ListEvent):void
event.preventDefault();
userTree.editedItemRenderer.data.@value =
ItemRendererUsers(event.currentTarget.itemEditorInstance).curVal;
userTree.destroyItemEditor();
userTree.dataProvider.notifyItemUpdate(userTree.editedItemRenderer);
} // END OF e_ProcessData()
I attached the rest of the files because they're a little
bit longer.
When I run the program, the data shows up fine when it is
initialized the
very
first time, and I made a test button that just dumps the
contents of the
dataProvider in a trace statement to verify that the data has
been set
properly.
The problem I've run into is whenever the textfield is
edited, the item
that
I've selected jumps around the list.
For example, if I edit the item "STR_USER_NAME" after I
finish the edit, it
will move from the very first position in the Tree to the
bottom of the
Tree.
I traced the contents of the dataProvider and the
dataProvider structure
stays
the same, with the "STR_USER_NAME" at the top, but if I look
at the flex app
in
the web browser, its position is at the bottom of the Tree.
This happens for every other item I try to edit... I read in
the
documentation
that the ItemRenderers are recycled, so it means I should be
checking to
make
sure the initial states are covered, but I'm not sure how
this affects my
application.
Can anyone help me out with this ? Its very confusing - I've
tried making
an
ItemRenderer using pure actionscript, mxml and the
combination you see in
this
example and I always end up with the same behaviour - So I
must be missing
something critical...
// ItemRendererUsers.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="
http://www.adobe.com/2006/mxml"
verticalScrollPolicy="{ScrollPolicy.OFF}"
horizontalScrollPolicy="{ScrollPolicy.OFF}"
creationComplete="initItemRendererUsers();"
>
From my FAQ:
Q: I've created a custom itemRenderer component to use in a
List
based component (Datagrid, TileList, HorizontalList, etc.).
When my List
first displays, everything looks fine, but when I scroll it
or change the
dataProvider, some of the itemRenderers show values or
formatting that
aren't right. How do I fix this?
A: List-based components don't draw a renderer for every item
in the
dataProvider. Instead, they create enough to display what is
on screen now,
plus one or two more waiting in the wings. This means they
recycle the
renderers rather than creating new ones when you change
dataProvider or
scroll up and down. When you use a creationComplete event to
set up the
itemRenderer, that event doesn't happen again when the
renderer is used for
a different set of data. The solution to this is to override
the set data
protected function that most components have.
For more information, check out the following resources:
http://www.adobe.com/devnet/flex/articles/itemrenderers_pt1.html?devcon=f1
http://blogs.adobe.com/aharui/2007/03/thinking_about_item_renderers_1.html
Please note, I post this FAQ weekly, and you can find a
permanent copy of it
here
http://www.magnoliamultimedia.com/flex_examples/Amys_Flex_FAQ.pdf

"peterh8234" <[email protected]> wrote in
message
news:gaqttd$kft$[email protected]..
> Yes - the set and get functions are listed down below.
But the quirky
> behaviour
> is the same regardless of whether I override the set and
get functions or
> not.
>
> I noticed there was another variable called listData -
should I be using
> that
> one or the data variable to read and write to the
dataProvider ?
>
> // _data
> [Bindable] public var _data:Object;
> [Bindable("dataChange")]
> //
> override public function get data():Object
> {
> trace('[ItemRendererDefault.GET data()] called for {' +
> _data.attribute("label") + '}.');
> return _data;
> } // END OF get data()
>
> //
> override public function set data(value:Object):void
> {
> _data.@value = inputText.text;
> trace('[ItemRendererDefault.SET data()] called for {' +
> _data.attribute("label") + '}.');
>
> invalidateProperties();
> } // END OF set data()
Your set data needs to set a flag that gets picked up in
commitProperties()
and does your thing that you were doing before in
creationComplete. You
should see examples of this in the links I posted. Instead of
this:
_data.@value = inputText.text;
you should look at implementing IDropInListItemRenderer,
which will allow
you to dynamically determine which field to look at, instead
of hardcoding
it. You also might wind up overwriting the stored value with
a null value
when the List passes the stored value in. I'd encourage you
to really go
through those links I posted and make sure you understand
what they're
saying. The itemRenderer life cycle is one of the hardest
things to
understand, but once you understand it, it makes many things
in Flex much
easier. It's worth investing the time.

Tree interface concept for hierarchical data creation/modification

I am designing an interface for hierarchical data creation and maintenance. The interface will have to provide all basic data modifications options:
edit an existing node, add new child/parent/sibling, as well as removing, sorting, dragging and dropping nodes around. Flex tree control is fully capable of all these functions while coding is not going to be a simple task. Has anyone worked on something like this? Any conceptual ideas?
Thanks

WOW Odie! You're awesome !! It worked like a charm, I created a view as you suggested:
CREATE OR REPLACE FORCE VIEW "VIEW_TASKS_PROJECTS_TREE" ("ID", "PARENT_ID", "NODE_NAME") AS
SELECT to_char(id) as id
, null as parent_id
, project_name as node_name
FROM eba_task_projects
UNION ALL
SELECT to_char(id)
, to_char(project_id)
, task_name
FROM eba_task_tasks;
And then I created a new tree with the defaults and customized the Tree query a bit (just added the links really):
select case when connect_by_isleaf = 1 then 0
when level = 1 then 1
else -1
end as status,
level,
"NODE_NAME" as title,
null as icon,
"ID" as value,
null as tooltip,
'f?p=&APP_ID.:22:&SESSION.::NO::P22_ID,P22_PREV_PAGE:' || "ID" || ',3' as link
from "#OWNER#"."VIEW_TASKS_PROJECTS_TREE"
start with "PARENT_ID" is null
connect by prior "ID" = "PARENT_ID"
order siblings by "NODE_NAME"
Thanks man, you saved me a lot of time and headaches :)

Tree control and drop target data

Hi
I can't seem to find an answer to my problem anywhere.
Is it possible to read the data from the node over which an
item is dragged and accept or reject a drop if for example the node
data has attribute droppable?
Attached is the ArrayCollection used to store dummy data.
I would like to allow dragging elements to Private folder and
disallow dragging them to Public folder.
Thanks for any help.

Yes. Do the logic in the dragOver and dragDrop handlers.
Tracy

Tree-control for data input?

Hi,
I need to program an input screen for values that have hierarchical dependencies (e.g. sums). I feel, the most adequate user-interface would be a tree control, because of the data dependencies and also because the users asked for a possibility to collapse/expand parts of the data during input.
I had a look at CL_GUI_COLUMN_TREE, but I'm not sure, if it can be used for data input. Has anyone done something like this before or can anybody direct me to some additional sample coding? (the sample coding in the reuse library didn't do it...)
Thanks for your help, greetings, Kathrin!

Hello Kathrin,
Since you say that the user's input is hierarchical in nature, it is nice to have a tree-control for input. But, the choice of using a custom-control-version of the tree is a cause for some concern. I cannot recollect any of the SAP screens where the input can be given through such a tree framework (please do let me know if you have come across one). The problem with such a tree would be in the areas of even-handling. Filling the tree with appropriate data at the right times would be another challenge.
However, there's one alternative that I would like to direct your attention to. You must have observed another kind of tree, when you select an application component from the APPLICATION HIERARCHY, which is just like a list. Also, the Transport Organizer (SE09), Menu Painter (SE41) etc., have this kind of a tree. You can use this if you (or rather your users) are very particular on having a tree display. For more information, you can see the Function Group SEUT, which has the required function modules to accomplish the same. The Function Group is well documented, and you might have to work a little on the function modules themselves.
Please do let me know if this is a suitable option to meet your requirement. All the best,
Regards,
Anand Mandalika.

Can I edit the data already displayed in tree control?

I'm using a tree control to display some data in front panel. But after running the program, can I edit the data already displayed in tree control by using input control and let it change and display dynamically? In invoke nodes I can only find add or delete items in tree but can't find edit...

There is no direct editing option available, same can be achieved in two steps by using
--> Add Item Invoke Node
--> Delete Item Invoke Node
I am not allergic to Kudos, in fact I love Kudos.
Make your LabVIEW experience more CONVENIENT.

Single click on tree control navigation

Hello I have a tree control where I have include the navigation, I know that there is a method
HANDLE_NODE_DOUBLE_CLICK FOR G_TREE
but is there an method for only one click, I want to change my alv grid data when I click on several nodes in my tree control

Hello Muhammet
I have re-written my sample report ZUS_SDN_TWO_ALV_GRIDS into ZUS_SDN_TREE_AND_GRID_CONTROL which is now display a tree control together with the ALV grid.
When you analyze this new report you will see that every step of the program logic is as I described in my previous e-mails.
*& Report ZUS_SDN_TWO_ALV_GRIDS
*& Screen '0100' contains no elements.
*& ok_code -> assigned to GD_OKCODE
*& Flow logic:
* PROCESS BEFORE OUTPUT.
* MODULE STATUS_0100.
* PROCESS AFTER INPUT.
* MODULE USER_COMMAND_0100.
*& Thread: single click on tree control navigation
*& <a class="jive_macro jive_macro_thread" href="" __jive_macro_name="thread" modifiedtitle="true" __default_attr="1143770"></a>
REPORT zus_sdn_tree_and_grid_control.
TYPE-POOLS: abap, cntl.
TYPES: node_table_type LIKE STANDARD TABLE OF mtreesnode
 WITH DEFAULT KEY.
* CAUTION: MTREESNODE is the name of the node structure which must
* be defined by the programmer. DO NOT USE MTREESNODE!
CONSTANTS:
BEGIN OF c_nodekey,
 root TYPE tv_nodekey VALUE 'Root', "#EC NOTEXT
 child1 TYPE tv_nodekey VALUE 'Child1', "#EC NOTEXT
* child2 type tv_nodekey value 'Child2', "#EC NOTEXT
 new1 TYPE tv_nodekey VALUE 'New1', "#EC NOTEXT
 new2 TYPE tv_nodekey VALUE 'New2', "#EC NOTEXT
* new3 type tv_nodekey value 'New3', "#EC NOTEXT
* new4 type tv_nodekey value 'New4', "#EC NOTEXT
END OF c_nodekey.
DATA:
gd_okcode TYPE ui_func,
gd_repid TYPE syst-repid,
go_docking TYPE REF TO cl_gui_docking_container,
go_splitter TYPE REF TO cl_gui_splitter_container,
go_cell_left TYPE REF TO cl_gui_container,
go_cell_right TYPE REF TO cl_gui_container,
go_tree TYPE REF TO cl_gui_simple_tree,
go_grid1 TYPE REF TO cl_gui_alv_grid,
** go_grid2 TYPE REF TO cl_gui_alv_grid,
gs_layout TYPE lvc_s_layo.
DATA:
gt_knb1 TYPE STANDARD TABLE OF knb1,
gt_knvv TYPE STANDARD TABLE OF knvv.
* CLASS lcl_eventhandler DEFINITION
CLASS lcl_eventhandler DEFINITION.
PUBLIC SECTION.
 CLASS-METHODS:
 handle_double_click FOR EVENT double_click OF cl_gui_alv_grid
 IMPORTING
 e_row
 e_column
 es_row_no
 sender.
ENDCLASS. "lcl_eventhandler DEFINITION
* CLASS lcl_eventhandler IMPLEMENTATION
CLASS lcl_eventhandler IMPLEMENTATION.
METHOD handle_double_click.
* define local data
 DATA:
 ls_knb1 TYPE knb1.
 CHECK ( sender = go_grid1 ).
 READ TABLE gt_knb1 INTO ls_knb1 INDEX e_row-index.
 CHECK ( ls_knb1-kunnr IS NOT INITIAL ).
** CALL METHOD go_grid1->set_current_cell_via_id
** EXPORTING
*** IS_ROW_ID =
*** IS_COLUMN_ID =
** is_row_no = es_row_no.
* Triggers PAI of the dynpro with the specified ok-code
 CALL METHOD cl_gui_cfw=>set_new_ok_code( 'DETAIL' ).
ENDMETHOD. "handle_double_click
ENDCLASS. "lcl_eventhandler IMPLEMENTATION
* CLASS LCL_APPLICATION DEFINITION
CLASS lcl_application DEFINITION.
PUBLIC SECTION.
 CLASS-DATA:
 md_event TYPE string READ-ONLY,
 md_node_key TYPE tv_nodekey READ-ONLY.
 CLASS-METHODS:
 handle_node_double_click
 FOR EVENT node_double_click
 OF cl_gui_simple_tree
 IMPORTING node_key,
 handle_expand_no_children
 FOR EVENT expand_no_children
 OF cl_gui_simple_tree
 IMPORTING node_key.
ENDCLASS. "LCL_APPLICATION DEFINITION
* CLASS LCL_APPLICATION IMPLEMENTATION
CLASS lcl_application IMPLEMENTATION.
METHOD handle_node_double_click.
 " this method handles the node double click event of the tree
 " control instance
 " show the key of the double clicked node in a dynpro field
 md_event = 'NODE_DOUBLE_CLICK'.
 md_node_key = node_key.
 " Trigger PAI and set ok-code = 'DETAIL'
 CALL METHOD cl_gui_cfw=>set_new_ok_code
 EXPORTING
 new_code = 'DETAIL'
* IMPORTING
* rc =
 MESSAGE md_node_key TYPE 'I'.
ENDMETHOD. "HANDLE_NODE_DOUBLE_CLICK
METHOD handle_expand_no_children.
 " this method handles the expand no children event of the tree
 " control instance
 DATA: node_table TYPE node_table_type,
 node TYPE mtreesnode.
 " show the key of the double clicked node in a dynpro field
 md_event = 'EXPAND_NO_CHILDREN'.
 md_node_key = node_key.
 IF node_key = 'Child1'.
* add two nodes to the tree control (the children of 'Child1')
* Node with key 'New1'
 CLEAR node.
 node-node_key = c_nodekey-new1.
 node-relatkey = c_nodekey-child1.
 node-relatship = cl_gui_simple_tree=>relat_last_child.
 node-isfolder = ' '.
 node-text = 'New1'(ne1).
 APPEND node TO node_table.
* Node with key 'New2'
 CLEAR node.
 node-node_key = c_nodekey-new2.
 node-relatkey = c_nodekey-child1.
 node-relatship = cl_gui_simple_tree=>relat_last_child.
 node-n_image = '@10@'.
 node-expander = ' '.
 node-text = 'New2'(ne2).
 APPEND node TO node_table.
 CALL METHOD go_tree->add_nodes
 EXPORTING
 table_structure_name = 'MTREESNODE'
 node_table = node_table
 EXCEPTIONS
 failed = 1
 error_in_node_table = 2
 dp_error = 3
 table_structure_name_not_found = 4
 OTHERS = 5.
 IF sy-subrc <> 0.
** MESSAGE A000.
 ENDIF.
 ENDIF.
ENDMETHOD. "HANDLE_EXPAND_NO_CHILDREN
ENDCLASS. "LCL_APPLICATION IMPLEMENTATION
START-OF-SELECTION.
SELECT * FROM knb1 INTO TABLE gt_knb1 UP TO 100 ROWS
 WHERE bukrs = '1000'.
PERFORM init_controls.
* Display data
gs_layout-grid_title = 'Customers: Sales Areas'.
CALL METHOD go_grid1->set_table_for_first_display
 EXPORTING
 i_structure_name = 'KNVV'
 is_layout = gs_layout
 CHANGING
 it_outtab = gt_knvv
 EXCEPTIONS
 OTHERS = 4.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Link the docking container to the target dynpro
gd_repid = syst-repid.
CALL METHOD go_docking->link
 EXPORTING
 repid = gd_repid
 dynnr = '0100'
* CONTAINER =
 EXCEPTIONS
 OTHERS = 4.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* NOTE: dynpro does not contain any elements
CALL SCREEN '0100'.
* Flow logic of dynpro (does not contain any dynpro elements):
*PROCESS BEFORE OUTPUT.
* MODULE STATUS_0100.
*PROCESS AFTER INPUT.
* MODULE USER_COMMAND_0100.
END-OF-SELECTION.
*& Module STATUS_0100 OUTPUT
* text
MODULE status_0100 OUTPUT.
SET PF-STATUS 'STATUS_0100'. " contains push button "DETAIL"
* SET TITLEBAR 'xxx'.
* Refresh display of detail ALV list
CALL METHOD go_grid1->refresh_table_display
* EXPORTING
* IS_STABLE =
* I_SOFT_REFRESH =
 EXCEPTIONS
 OTHERS = 2.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDMODULE. " STATUS_0100 OUTPUT
*& Module USER_COMMAND_0100 INPUT
* text
MODULE user_command_0100 INPUT.
TRANSLATE gd_okcode TO UPPER CASE.
CASE gd_okcode.
 WHEN 'BACK' OR
 'END' OR
 'CANC'.
 SET SCREEN 0. LEAVE SCREEN.
* User has pushed button "Display Details"
 WHEN 'DETAIL'.
 MESSAGE gd_okcode TYPE 'I'.
 PERFORM entry_show_details.
 WHEN OTHERS.
ENDCASE.
CLEAR: gd_okcode.
ENDMODULE. " USER_COMMAND_0100 INPUT
*& Form ENTRY_SHOW_DETAILS
* text
* --> p1 text
* <-- p2 text
FORM entry_show_details .
* define local data
DATA:
 ld_row TYPE i,
 ls_knb1 TYPE knb1.
IF ( gt_knvv IS INITIAL ).
 SELECT * FROM knvv INTO TABLE gt_knvv
 FOR ALL ENTRIES IN gt_knb1
 WHERE kunnr = gt_knb1-kunnr.
ELSE.
 REFRESH: gt_knvv.
ENDIF.
ENDFORM. " ENTRY_SHOW_DETAILS
*& Form INIT_CONTROLS
* text
* --> p1 text
* <-- p2 text
FORM init_controls .
* Create docking container
CREATE OBJECT go_docking
 EXPORTING
 parent = cl_gui_container=>screen0
 ratio = 90
 EXCEPTIONS
 OTHERS = 6.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Create splitter container
CREATE OBJECT go_splitter
 EXPORTING
 parent = go_docking
 rows = 1
 columns = 2
* NO_AUTODEF_PROGID_DYNNR =
* NAME =
 EXCEPTIONS
 cntl_error = 1
 cntl_system_error = 2
 OTHERS = 3.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Get cell container
CALL METHOD go_splitter->get_container
 EXPORTING
 row = 1
 column = 1
 RECEIVING
 container = go_cell_left.
CALL METHOD go_splitter->get_container
 EXPORTING
 row = 1
 column = 2
 RECEIVING
 container = go_cell_right.
* Create ALV grids
CREATE OBJECT go_grid1
 EXPORTING
 i_parent = go_cell_right
 EXCEPTIONS
 OTHERS = 5.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Set event handler
SET HANDLER:
 lcl_eventhandler=>handle_double_click FOR go_grid1.
PERFORM create_and_init_tree.
ENDFORM. " INIT_CONTROLS
*& Form CREATE_AND_INIT_TREE
* text
* --> p1 text
* <-- p2 text
FORM create_and_init_tree .
DATA: lt_node_table TYPE node_table_type,
 lt_events TYPE cntl_simple_events,
 ls_event TYPE cntl_simple_event.
* create a tree control
CREATE OBJECT go_tree
 EXPORTING
 parent = go_cell_left
 node_selection_mode = cl_gui_simple_tree=>node_sel_mode_single " single node selection is used
 EXCEPTIONS
 lifetime_error = 1
 cntl_system_error = 2
 create_error = 3
 failed = 4
 illegal_node_selection_mode = 5.
IF sy-subrc <> 0.
** MESSAGE a000.
ENDIF.
* define the events which will be passed to the backend
" node double click
ls_event-eventid = cl_gui_simple_tree=>eventid_node_double_click.
** ls_event-appl_event = 'X'. " process PAI if event occurs
" NOTE: Do NOT register as application event !!!!!
APPEND ls_event TO lt_events.
CALL METHOD go_tree->set_registered_events
 EXPORTING
 events = lt_events
 EXCEPTIONS
 cntl_error = 1
 cntl_system_error = 2
 illegal_event_combination = 3.
IF sy-subrc <> 0.
** MESSAGE a000.
ENDIF.
SET HANDLER:
 lcl_application=>handle_node_double_click FOR go_tree,
 lcl_application=>handle_expand_no_children FOR go_tree.
* add some nodes to the tree control
* NOTE: the tree control does not store data at the backend. If an
* application wants to access tree data later, it must store the
* tree data itself.
PERFORM build_node_table USING lt_node_table.
* node_table_structure_name = 'MTREESNODE'
* A programmer using the tree control must create a structure in the
* dictionary. This structure must include the structure TREEV_NODE
* and must contain a character field with the name 'TEXT'.
CALL METHOD go_tree->add_nodes
 EXPORTING
 table_structure_name = 'MTREESNODE'
 node_table = lt_node_table
 EXCEPTIONS
 failed = 1
 error_in_node_table = 2
 dp_error = 3
 table_structure_name_not_found = 4
 OTHERS = 5.
IF sy-subrc <> 0.
** MESSAGE a000.
ENDIF.
ENDFORM. " CREATE_AND_INIT_TREE
*& Form build_node_table
* text
* --> p1 text
* <-- p2 text
FORM build_node_table
USING
 node_table TYPE node_table_type.
DATA: node LIKE mtreesnode.
* Build the node table.
* Caution: The nodes are inserted into the tree according to the order
* in which they occur in the table. In consequence, a node must not
* occur in the node table before its parent node.
* Node with key 'Root'
node-node_key = c_nodekey-root.
" Key of the node
CLEAR node-relatkey. " Special case: A root node has no parent
CLEAR node-relatship. " node.
node-hidden = ' '. " The node is visible,
node-disabled = ' '. " selectable,
node-isfolder = 'X'. " a folder.
CLEAR node-n_image. " Folder-/ Leaf-Symbol in state "closed":
" use default.
CLEAR node-exp_image. " Folder-/ Leaf-Symbol in state "open":
" use default
CLEAR node-expander. " see below.
node-text = 'Root'(roo).
APPEND node TO node_table.
* Node with key 'Child1'
node-node_key = c_nodekey-child1.
" Key of the node
" Node is inserted as child of the node with key 'Root'.
node-relatkey = c_nodekey-root.
node-relatship = cl_gui_simple_tree=>relat_last_child.
node-hidden = ' '.
node-disabled = ' '.
node-isfolder = 'X'.
CLEAR node-n_image.
CLEAR node-exp_image.
node-expander = 'X'. " The node is marked with a '+', although
" it has no children. When the user clicks on the
" + to open the node, the event
" expand_no_children is fired. The programmer can
" add the children of the
" node within the event handler of the
" expand_no_children event
" (see method handle_expand_no_children
" of class lcl_application)
node-text = 'Child1'(ch1).
node-style = cl_gui_simple_tree=>style_emphasized_positive.
APPEND node TO node_table.
ENDFORM. " build_node_table
Regards
Uwe

Plumtree Tree Control

How do I use the plumtree tree control to display structured data in a portlet?

Stuart,
I assume that you are using the EDK Web Controls package - it's a separate download from the .NET EDK, but I expect you are otherwise it would have been difficult to get it to work at all.
I have managed to get this tree control to work, and these are the steps I took:
Moved all images to the imageserver & changed the image base in the control to point to the location on the image serverMoved the htc file to the portal server and changed the webapp to point at this (you cannot put this on the image server as cross-site scripting security prevents this). This you can do in web.config.Each time the control didn't work I checked the html source to see if there were any links that were broken. I never had a problem with specific browsers though - it seemed to always work on IE, and always look bad on anything else!
Also make sure you're using the EDK Web Controls 2.1 (not beta) - any older than this will not work.
Jonathan

Tree control erroneously displays nodes multiple times

I'm attempting to use a Tree control to display some data.
I'm using an HierarchicalCollectionView as the dataProvider. All
the data displays, but it appears on the wrong level. For instance,
on the root level, it displays the root node (correctly marked with
the folder icon as having children), plus all the children (on the
root level!) If I expand the root node, underneath it it displays
its children as expected -- now there are 2 copys of all the
children, one in the correct place and one at the root level. If I
expand 2nd-level nodes, their children (and children's children,
etc) display underneath them... the pattern continues. It looks
like every level of the hierarchy displays ALL the nodes underneath
it, no matter how many levels down.
I think I know why this happens: a
HierarchicalCollectionView's createCursor() function returns an
IViewCursor that treats the collection as linear instead of
hierarchical. The Tree then uses this cursor to visit every node in
the tree, displaying it. When expanding a node, it again uses one
of these linear-type cursors, but on the children of the node
clicked on, so it displays all the children underneath it and their
children, etc. This seems like a major bug in the library -- I'm
pretty sure this isn't a problem with my code. Doesn't it seem
natural to use a HierarchicalCollectionView with a Tree control?
Has no one else ever experienced this issue? I'd expect it to work,
especially since HierarchicalCollectionView extends
ICollectionView, which is what the dataProvider wants. I've looked
through the source of the Tree class (and List, and ListBase) and I
think it all boils down to not using the dataDescriptor's
getChildren() method and instead using createCursor() directly on
the dataProvider. The dataDescriptor's getChildren() method returns
an ICollectionView that correctly only contains the next-level
nodes, not all of the ones all the way to the bottom of the
hierarchy. I think the bad behavior is inherited from ListBase (and
in that class, it actually makes sense... too bad nobody overrode
it in Tree).
Am I wrong? Am I making a mistake somewhere in my code? If
not, is there a workaround? Has a bug report been filed, and should
I file one if this is indeed a bug? Any help or insight would be
greatly appreciated.

OK, after banging my head against this for a day and a half,
I finally have an answer. It seems that the problem is my root node
(and possibly others; I didn't delve that deep) is "open". I guess
something, somewhere is calling
IHierarchicalCollectionView.openNode() on it. Closing the node(s)
makes the problem disappear. I've attached a reproduction script
that's about as simple as I can make it (I guess it could be
simpler with less data, but oh well). Why does this happen? Should
I open a bug report? It seems to me that the correct behavior would
be to have the open node(s) disclosure controls start out open
rather than incorrectly displaying their children as on the same
level as them.

How to binding incoming xml node list to the tree control as dataProvider

Recently, I faced into one issue: I want to binding incoming xml node (it's not avaliable at start) list to the tree control as a dataProvider.
Since the incoming xml node list is not avaliable at beginning but I needs to bind it to the tree, so I create one virtual one in the xml, and prepare to remove it before the tree is shown. (ready for the actual node adding). But It did not work.
Please see the presudo-code here:
1. Model layer(CsModel.as)
public class CsModel
 [Bindable]
 public var treeXML:XML=<nodes><car label="virtualOne" id="1">
 </car></nodes>;
 (Here, I want to build binding relationship on the <car/> node,
 one 'virtual/stub' node is set here with lable="virtualOne".
 But this node will be deleted after IdTree
 control is created completely.)
 [Bindable]
 public var treeData:XMLList =new XMLListCollection(treeXML.car);
2. view layer(treePage.mxml)
 private var _model:CsModel = new CsModel();
 private function addNode():void
 var newNode:XML=<car/>;
 newNode.@label="newOne";
 newNode.@id=1;
 _model.treeXML.appendChild(newNode);
 private function cleanData():void
 delete _model.treeXML.car;
 <mx:VBox height="100%" width="100%">
 <mx:Button label="AddNode" click="addNode()" />
 <mx:Tree id="IdTree" labelField="@label"
 creationComplete="cleanData()"
 dataProvider="{_model}"/>
 </mx:VBox>
3. Top view layer (App.Mxml)
<mx:application>
 <treePage />
</mx:application>
For method: cleanData()，It's expected that when the treePage is shown, we first delete the virutalOne to provide one 'clear' tree since we don't want show virtualOne to the user. The virutalOne node just for building the relationship between treeData and treeXML at beginning. But the side effect of this method, I found, is that the relationship between treeXML and treeData was cut off. And this leads to that when I added new node (by click the 'addNode' button) to the xmlXML, the xmlData was not affected at all !
So Is there any other way to solve this issue or bind the incoming xml node list to the xmlListCollection which will be used as Tree control's dataProvider ?

If u want to display the name : value then u can do like this
<xsl:eval>this.selectSingleNode("name").nodeName</xsl:eval> : <xsl:value-of select="name" />

Populate flex tree control on demand using HTTPService (Flex 3)

First, I am sorry if the same post is already posted here but after spending 30 minutes or may be more I could not find the solution.
By the way I have two problems. 1.) I am new to flex which I know if my own problem and soon I will handle it.
2.) This is major problem for me. I have to populate Tree control from database and I used HTTPService to get the data from database.
I created a object of HTTPService and on load of Tree control I am calling a function which calls the HTTP URL and returns me the first level of node for my Tree.
When I click on any node a function is called again using HTTPService and result is appended to the currently selected node. The same goes until n level and it works fine. I was happy with my results. I am stuck in new problem. The problem is if the tree is already populated on my browser and I make some add/update/delete any node or child node, the flex doesn't make a call to HTTP URL and I am not getting updated data.
The mxml code is below (this code has some extra things too).
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical" backgroundGradientAlphas="[1.0, 1.0]"
backgroundGradientColors="[#000000, #868686]" >
<mx:Script>
<![CDATA[
 import mx.utils.StringUtil;
 import mx.rpc.http.HTTPService;
 import mx.events.ListEvent;
 import mx.binding.utils.BindingUtils;
 import mx.controls.Alert;
 import mx.rpc.events.FaultEvent;
 import mx.collections.XMLListCollection;
 import mx.utils.ObjectProxy;
 import mx.collections.ArrayCollection;
 import mx.rpc.events.ResultEvent;
 import mx.utils.ArrayUtil;
 [Bindable]
 public var datalist:XMLListCollection = new XMLListCollection();
 [Bindable]
 public var xmlFromDatabase:HTTPService=new HTTPService();
 [Bindable]
 private var xmlForChildren:HTTPService;
 private function resultHandler( event:ResultEvent ):void
 var x:XML = event.result as XML;
 var xl:XMLList = XMLList( x );
 private function faultHandler( event:FaultEvent ):void
 Alert.show(event.message.toString());
 private function display():void
 var params:Object = {};
 params["parent"] = "0";
 xmlFromDatabase.url = "http://localhost:8080/GrailsFlex/department/tree";
 xmlFromDatabase.method = "GET";
 xmlFromDatabase.resultFormat = "e4x";
 xmlFromDatabase.useProxy = false;
 xmlFromDatabase.send(params);
 xmlFromDatabase.addEventListener(ResultEvent.RESULT,displyTree,false,0,false);
 private function displyTree(event:ResultEvent):void
 XMLtree1.dataProvider = event.result;
 XMLtree1.labelField = "@name";
 private function getChilds(event:ListEvent):void
 try
 var xmlTree:Tree = event.currentTarget as Tree;
 var node:XML = xmlTree.selectedItem as XML
 var params:Object = {};
 params["parent"] = node.@id;
 xmlForChildren = new HTTPService();
 xmlForChildren.url = "http://localhost:8080/GrailsFlex/department/tree";
 xmlForChildren.method = "GET";
 xmlForChildren.resultFormat = "e4x";
 xmlForChildren.useProxy = false;
 xmlForChildren.send(params);
 xmlForChildren.addEventListener(ResultEvent.RESULT,appendChild,false,0,false);
 xmlForChildren.addEventListener(ListEvent.ITEM_CLICK,getChilds,false,0,false);
 catch (E:Error)
 Alert.show("getChilds Error:-- " + E.message);
 private function deleteTreeNode(xmlItem:XML):void
 var xmlParent:XML = XML(xmlItem).parent();
 if (xmlParent.@parent == null || StringUtil.trim(xmlParent.@parent) == "")
 xmlParent.@parent = "0";
 if (xmlParent.@parent != "0")
 //Recursive call until I get reach to children of root node
 deleteTreeNode(xmlParent);
 else
 // Now I am at root.
 var xmlRoot:XML = XML(xmlParent).parent();
 var bActualRoot:Boolean = false;
 if (xmlRoot == null)
 xmlRoot = xmlParent;
 bActualRoot = true;
 if (bActualRoot)
 if (xmlRoot.@parent == "0")
 try
 for each (var xl:XML in xmlParent.children())
 if (xl.@name != xmlItem.@name)
 for (var cn:int=xl.children().length()-1; cn >=0; cn--)
 delete xl.children()[cn];
 catch (ex:Error)
 Alert.show("error Real Root: " + ex.toString());
 else
 for each (var nodexm:XML in xmlRoot.children() )
 if (nodexm.@name != xmlParent.@name )
 try
 for (var cu:int=nodexm.children().length()-1; cu >=0; cu--)
 delete nodexm.children()[cu];
 catch (ex:Error)
 Alert.show("error No Real Root: " + ex.toString());
 private function appendChild(event:ResultEvent):void
 var node:XML = event.result as XML
 var sItem: XML = XMLtree1.selectedItem as XML;
 if (sItem.children().length() > 0)
 delete sItem.children();
 for(var i:int=0; i < node.children().length(); i++)
 var item:XML = node.children()[i];
 XMLtree1.selectedItem.appendChild(item);
 XMLtree1.expandItem(XMLtree1.selectedItem,true,true);
 deleteTreeNode(XML(XMLtree1.selectedItem));
]]>
</mx:Script>
<mx:Tree id="XMLtree1" width="350" height="470"
 showRoot="false" creationComplete="display()" itemClick="getChilds(event)" />
</mx:Application>
Thanks in advance

Thanks buddy for the answer.
Unfortunately the answer came after quite long time of posting the message. Anyway I was able to open a tree on demand using HttpService and due to my new requirement I changed it to RemoteObject.
I my latest change I am able to populate tree nodes on demand and also the same solution if getting update from server via JMS using Consumer object.
I kind a like this solution because it took me good amount of effort to find the right solution.
If any one is intersted the he/she can reply to the post and I can provide code here or may at some location so that it can be easily downloaded.
The solution is Flex-Grails combination.
Thanks everybody.

Folder directory maps to tree control?

How can I maps folder directory to tree control? Is it even
possible? For example:
I want the tree to show all files and folders under
"C:\Documents and Settings\User\My Documents". Possible?

The Flashplayer Sandbox does not allow you to get information
of you file system directly, but there are severel ways to solve
the problem.
1.) you can use webservices which you communicate with (the
webservice can give you the information and then you have to handle
the webservice result)
2.) you can use coldfusion
3.) You can load a file form your system (with Urlrequest, or
httpservice) which represents your folder you want to display.
e.g.: you have a xml-file with all the required information,
then you parse through the xml-file, the disadvantage is, that you
always have to update you xml-file manually or with a script

How can I display and change built-in symbols of a tree control programmatically?

I want to set the built-in symbols of a tree control during runtime.
I only found an example to assign custom pictures but not how to select one of the 40 built-in symbol.
Many Thanks
Solved!
Go to Solution.

The ActiveItem.SymbolIndex will allow you to select the symbol for the active item. You can use the ListBox Symbol Ring Constant (Dialog and User Interface palette) to select a symbol (or you can just enter the number directly if you know what it is).
Message Edited by smercurio_fc on 07-10-2008 09:36 AM
Attachments:
Example_VI_BD6.png ‏2 KB

Not able to get the database data into the Tree Control

Hi Everybody,
I have to populate the tree control with nodes and items, which is to be populated from the database, and the tree control is dynamic. I mean, there is a toolbar, whenever a pushbutton is clicked, depending on that the tree contents has to be changed.
If anybody had worked with CL_GUI_COLUMN_TREE control to get the data from database, depending upon the pushbutton selected in Toolbar, please paste the seudocode for it.
Regards,
Abdul,
Intelligroup.
P.S: Helpful answers will be rewarded.

have you seen this demo program
SAPCOLUMN_TREE_CONTROL_DEMO
Regards
Raja

AS 3.0 & WebService & Tree control Bind to hierarchical data?

Similar Messages

Maybe you are looking for