File assets/php/examples/other_controls/persist.php

 1: <?php require_once('../qcubed.inc.php');
 2: 
 3: class PersistentExampleForm extends QForm {
 4:     // We will persist this control in the $_SESSION
 5:     protected $ddnProjectPicker1;
 6:     protected $ddnProjectPicker2;
 7:     protected $fld1;
 8:     protected $fld2;
 9: 
10:     protected $btnReload;
11: 
12:     protected function Form_Create() {
13: 
14:         $this->ddnProjectPicker1 = new ProjectPickerListBox ($this);
15:         $this->ddnProjectPicker2 = new ProjectPickerListBox ($this);
16:         $this->ddnProjectPicker2->SaveState = true;
17: 
18:         $this->fld1 = new QTextBox($this);
19:         $this->fld1->Text = 'Change Me';
20:         $this->fld2 = new QTextBox($this);
21:         $this->fld2->Text = 'Change Me';
22:         $this->fld2->SaveState = true;
23: 
24:         $this->btnReload = new QButton($this);
25:         $this->btnReload->Text = 'Reload the Page';
26:         // Any action will trigger the communication from the client to the server to record changes on the client side.
27:         $this->btnReload->AddAction (new QClickEvent(), new QAjaxAction('btnReload_Click'));
28:     }
29: 
30:     protected function btnReload_Click() {
31:         QApplication::Redirect('persist.php');
32:     }
33: }
34: 
35: /**
36:  * This class encapsulates the logic of populating a list box
37:  * with a set of projects.
38:  */
39: class ProjectPickerListBox extends QListBox {
40: 
41:     /**
42:      * This constructor will only be executed once - afterwards,
43:      * the state of the control will be stored into the $_SESSION
44:      * and, on future loads, populated from the session state.
45:      */
46:     public function __construct($objParentObject) {
47:         parent::__construct($objParentObject);
48: 
49:         $projects = Project::QueryArray(
50:             QQ::All(),
51:             QQ::OrderBy(QQN::Project()->Name)
52:         );
53: 
54:         foreach ($projects as $project) {
55:             $this->AddItem($project->Name, $project->Id);
56:         }
57:     }
58: }
59: 
60: PersistentExampleForm::Run('PersistentExampleForm');
61: 
62: ?>
63:
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