[PATCH proxmox-widget-toolkit 08/13] form: introduce new 'proxmoxtextarea' field

["Max R. Carrara" <m.carrara@proxmox.com>]

Define a new field named `proxmoxtextarea` and let it extend the
`TextArea` field that Ext JS ships.

`proxmoxtextarea` uses the exact same logic as `proxmoxtextfield`.
This means that it also supports the `skipEmptyText` attribute, which
is used to omit sending an empty string to the backend if the field is
left empty.

Signed-off-by: Max R. Carrara <m.carrara@proxmox.com>
---
 src/form/TextAreaField.js | 47 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/src/form/TextAreaField.js b/src/form/TextAreaField.js
index f4b0bb4..ae2e922 100644
--- a/src/form/TextAreaField.js
+++ b/src/form/TextAreaField.js
@@ -59,3 +59,50 @@ Ext.define('Proxmox.form.field.Base64TextArea', {
         this.validate();
     },
 });
+
+Ext.define('Proxmox.form.field.TextArea', {
+    extend: 'Ext.form.field.TextArea',
+    alias: ['widget.proxmoxtextarea'],
+
+    config: {
+        skipEmptyText: true,
+        deleteEmpty: false,
+        trimValue: false,
+    },
+
+    getSubmitData: function () {
+        let me = this,
+            data = null,
+            val;
+        if (!me.disabled && me.submitValue && !me.isFileUpload()) {
+            val = me.getSubmitValue();
+            if (val !== null) {
+                data = {};
+                data[me.getName()] = val;
+            } else if (me.getDeleteEmpty()) {
+                data = {};
+                data.delete = me.getName();
+            }
+        }
+        return data;
+    },
+
+    getSubmitValue: function () {
+        let me = this;
+
+        let value = this.processRawValue(this.getRawValue());
+        if (me.getTrimValue() && typeof value === 'string') {
+            value = value.trim();
+        }
+        if (value !== '') {
+            return value;
+        }
+
+        return me.getSkipEmptyText() ? null : value;
+    },
+
+    setAllowBlank: function (allowBlank) {
+        this.allowBlank = allowBlank;
+        this.validate();
+    },
+});
-- 
2.47.3