1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
|
<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="treeview_simple_liststore.vala" xml:lang="gl">
<info>
<title type="text">Simple Treeview with ListStore (Vala)</title>
<link type="guide" xref="beginner.vala#treeview"/>
<link type="seealso" xref="grid.vala"/>
<link type="seealso" xref="label.vala"/>
<revision version="0.1" date="2012-05-09" status="draft"/>
<credit type="author copyright">
<name>Tiffany Antopolski</name>
<email its:translate="no">tiffany.antopolski@gmail.com</email>
<years>2012</years>
</credit>
<desc>Un widget pode mostrar calquera implementación de TreeModel (listas e árbores)</desc>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Fran Dieguez</mal:name>
<mal:email>frandieguez@gnome.org</mal:email>
<mal:years>2012-2013.</mal:years>
</mal:credit>
</info>
<title>TreeView simple con ListStore</title>
<media type="image" mime="image/png" src="media/treeview_simple_liststore.png"/>
<p>Este TreeView mostra un ListStore simple con un sinal de selección «changed» conectado.</p>
<code mime="text/x-csharp" style="numbered">public class PhoneBookEntry {
public string firstname;
public string lastname;
public string phone;
public PhoneBookEntry (string f, string l, string p) {
this.firstname = f;
this.lastname = l;
this.phone = p;
}
}
class TreeViewSimpleListStore : Gtk.ApplicationWindow {
Gtk.Label label;
PhoneBookEntry[] phonebook = {
new PhoneBookEntry ("Jurg", "Billeter", "555-0123"),
new PhoneBookEntry ("Johannes", "Schmid", "555-1234"),
new PhoneBookEntry ("Julita", "Inca", "555-2345"),
new PhoneBookEntry ("Javier", "Jardon", "555-3456"),
new PhoneBookEntry ("Jason", "Clinton", "555-4567"),
new PhoneBookEntry ("Random J.", "Hacker", "555-5678")
};
enum Column {
FIRSTNAME,
LASTNAME,
PHONE
}
internal TreeViewSimpleListStore (MyApplication app) {
Object (application: app, title: "My Phone Book");
this.set_default_size (250, 100);
this.border_width = 10;
var view = new Gtk.TreeView ();
this.setup_treeview (view);
view.expand = true;
label = new Gtk.Label ("");
var grid = new Gtk.Grid ();
grid.attach (view, 0, 0, 1, 1);
grid.attach (label, 0, 1, 1, 1);
this.add (grid);
var selection = view.get_selection ();
selection.changed.connect (this.on_changed);
}
void setup_treeview (Gtk.TreeView view) {
var listmodel = new Gtk.ListStore (3, typeof (string),
typeof (string),
typeof (string));
view.set_model (listmodel);
var cell = new Gtk.CellRendererText ();
/* 'weight' refers to font boldness.
* 400 is normal.
* 700 is bold.
*/
cell.set ("weight_set", true);
cell.set ("weight", 700);
/*columns*/
view.insert_column_with_attributes (-1, "First Name",
cell, "text",
Column.FIRSTNAME);
view.insert_column_with_attributes (-1, "Last Name",
new Gtk.CellRendererText (),
"text", Column.LASTNAME);
view.insert_column_with_attributes (-1, "Phone Number",
new Gtk.CellRendererText (),
"text", Column.PHONE);
/* Insert the phonebook into the ListStore */
Gtk.TreeIter iter;
for (int i = 0; i < phonebook.length; i++) {
listmodel.append (out iter);
listmodel.set (iter, Column.FIRSTNAME,
phonebook[i].firstname,
Column.LASTNAME, phonebook[i].lastname,
Column.PHONE, phonebook[i].phone);
}
}
void on_changed (Gtk.TreeSelection selection) {
Gtk.TreeModel model;
Gtk.TreeIter iter;
string name;
string lastname;
string phone;
if (selection.get_selected (out model, out iter)) {
model.get (iter,
Column.FIRSTNAME, out name,
Column.LASTNAME, out lastname,
Column.PHONE, out phone);
label.set_text ("\n" + name + " " + lastname + " " + phone);
}
}
}
class MyApplication : Gtk.Application {
protected override void activate () {
/* Create new Window and show all the things. */
new TreeViewSimpleListStore (this).show_all ();
}
internal MyApplication () {
Object (application_id: "example.liststore.simple.treeview");
}
}
int main (string[] args) {
return new MyApplication ().run (args);
}
</code>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.TreeView.html">Gtk.TreeView</link></p></item>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.ListStore.html">Gtk.ListStore</link></p></item>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.TreeSelection.html">Gtk.TreeSelection</link></p></item>
</list>
</page>
|