GdauiTreeStore

GdauiTreeStore — Bridge between a GdaTree and a GtkTreeModel

Stability Level

Stable, unless otherwise indicated

Properties

GdaTree * tree Read / Write / Construct Only

Signals

Types and Values

Object Hierarchy

    GObject
    ╰── GdauiTreeStore

Implemented Interfaces

GdauiTreeStore implements GtkTreeModel, GtkTreeDragSource and GtkTreeDragDest.

Description

The GdauiTreeStore implements the GtkTreeModel interface required to display data from a GdaTree in a GtkTreeView widget.

To allow a tree to be populated only on request (ie. when the user expands a row), each GdaTreeNode can give the attribute named GDA_ATTRIBUTE_TREE_NODE_UNKNOWN_CHILDREN a boolean TRUE GValue to tell the GdauiTreeStore data model to artificially add a dummy child for the row corresponding to the GdaTreeNode. Then the programmer can connect to the GtkTreeView::test-expand-row signal and update the requested children.

Functions

gdaui_tree_store_new ()

GtkTreeModel *
gdaui_tree_store_new (GdaTree *tree,
                      guint n_columns,
                      ...);

Creates a GtkTreeModel interface with a GdaTree, mapping columns to attributes' values.

As an example, gdaui_tree_store_new (tree, 2, G_TYPE_STRING, "name", G_TYPE_STRING, "schema"); creates a GtkTreeStore with two columns (of type G_TYPE_STRING), one with the values of the "name" attribute, and one with the values of the "schema" attribute.

Note that the GType has to correspond to the type of value associated with the attribute name (no type conversion is done), and a warning will be displayed in case of type mismatch.

Parameters

tree

a GdaTree object

 

n_columns

number of columns in the tree store

 

...

couples of (GType, attribute name) for each column, from first to last

 

Returns

the new object, or NULL if an attribute's name was NULL or an empty string

Since 4.2


gdaui_tree_store_newv ()

GtkTreeModel *
gdaui_tree_store_newv (GdaTree *tree,
                       guint n_columns,
                       GType *types,
                       const gchar **attribute_names);

Creates a GtkTreeModel interface with a GdaTree, mapping columns to attributes' values. For more information and limitations, see gdaui_tree_store_new().

Parameters

tree

a GdaTree object

 

n_columns

number of columns in the tree store

 

types

an array of n_columns GType to specify the type of each column

 

attribute_names

an array of n_columns strings to specify the attribute name to map each column on

 

Returns

the new object, or NULL if an inconsistency exists in the parameters.

[transfer full]

Since 4.2


gdaui_tree_store_get_node ()

GdaTreeNode *
gdaui_tree_store_get_node (GdauiTreeStore *store,
                           GtkTreeIter *iter);

Get the GdaTreeNode represented by iter .

Parameters

store

a GdauiTreeStore object

 

iter

a valid GtkTreeIter

 

Returns

the GdaTreeNode represented by iter , or NULL if an error occurred.

[transfer none]

Since 4.2.8


gdaui_tree_store_get_iter ()

gboolean
gdaui_tree_store_get_iter (GdauiTreeStore *store,
                           GtkTreeIter *iter,
                           GdaTreeNode *node);

gdaui_tree_store_get_iter has been deprecated since version 5.2 and should not be used in newly-written code.

Sets iter to represent node in the tree.

Parameters

store

a GdauiTreeStore object

 

iter

a pointer to a GtkTreeIter

 

node

a GdaTreeNode in store

 

Returns

TRUE if no error occurred and iter is valid

Since 4.2.8

Types and Values

struct GdauiTreeStore

struct GdauiTreeStore;

Property Details

The “tree” property

  “tree”                     GdaTree *

Flags: Read / Write / Construct Only

Signal Details

The “drag-can-drag” signal

gboolean
user_function (GdauiTreeStore *gdauitreestore,
               gchar          *arg1,
               gpointer        user_data)

Flags: Run Last


The “drag-can-drop” signal

gboolean
user_function (GdauiTreeStore *gdauitreestore,
               gchar          *arg1,
               gpointer        arg2,
               gpointer        user_data)

Flags: Run Last


The “drag-delete” signal

gboolean
user_function (GdauiTreeStore *gdauitreestore,
               gchar          *arg1,
               gpointer        user_data)

Flags: Run Last


The “drag-drop” signal

gboolean
user_function (GdauiTreeStore *gdauitreestore,
               gchar          *arg1,
               gpointer        arg2,
               gpointer        user_data)

Flags: Run Last


The “drag-get” signal

gboolean
user_function (GdauiTreeStore *gdauitreestore,
               gchar          *arg1,
               gpointer        arg2,
               gpointer        user_data)

Flags: Run Last

See Also

GdaTree