From 4e30bcaec76b27c8ea5863b204e1021fa538bcd3 Mon Sep 17 00:00:00 2001
From: Renaud Le Gac <renaud.legac@free.fr>
Date: Sun, 27 Mar 2011 16:42:47 +0000
Subject: [PATCH] Add a new class to download file pressing a button.
---
static/plugin_dbui/src/appbuttondownload.js | 62 +++++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 static/plugin_dbui/src/appbuttondownload.js
diff --git a/static/plugin_dbui/src/appbuttondownload.js b/static/plugin_dbui/src/appbuttondownload.js
new file mode 100644
index 00000000..2b940e79
--- /dev/null
+++ b/static/plugin_dbui/src/appbuttondownload.js
@@ -0,0 +1,62 @@
+/**
+ * A button to download file from the server
+ *
+ * @extends Ext.Button
+ * @version $Id$
+ *
+ */
+
+Ext.namespace('App');
+
+App.ButtonDownload = Ext.extend(Ext.Button, {
+
+ /**
+ * @cfg{String} url pointing to the server controller
+ * which will return the file
+ */
+ url: undefined,
+
+ /**
+ * private method requests by the component model of ExtJS
+ */
+ initComponent: function () {
+
+ // initialize the underlying class
+ App.ButtonDownload.superclass.initComponent.call(this);
+
+ // download when the button is pressed
+ this.on('click', this.onDownload, this);
+ },
+
+ /**
+ * Handler to download the file
+ * The scope is the button.
+ *
+ * NOTE: this method add and iframe at the end of the DOM document
+ * the source of the iframe is the url pointing on the server conroller.
+ * The latter returun a document which is automatically loaded.
+ *
+ * Method suggested on the sencha forum:
+ * www.sencha.com/forum/showthread.php?26471-Download-File-on%28-click-%29
+ */
+ onDownload: function (button, event) {
+
+ // remove existing iframe
+ try {
+ Ext.destroy(Ext.get('downloadIframe'));
+ } catch (err) {}
+
+ // create a fresh iframe
+ Ext.DomHelper.append(document.body, {
+ tag: 'iframe',
+ id: 'downloadIframe',
+ frameBorder: 0,
+ width: 0,
+ height: 0,
+ css: 'display:none;visibility:hidden;height:0px;',
+ src: this.url
+ });
+ }
+});
+
+Ext.reg('xbuttondownload', App.ButtonDownload);
--
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