[ADD] web_widget_dropdown_dynamic

[UPD] Update web_widget_dropdown_dynamic.pot

[UPD] Update web_widget_dropdown_dynamic_example.pot

[UPD] README.rst

[ADD] icon.png

[UPD] README.rst

web_widget_dropdown_dynamic/static/src/js/basic_model.js

@@ -0,0 +1,47 @@
+/* 
+ * Copyright 2019 Brainbean Apps (https://brainbeanapps.com)
+ * License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+ */
+odoo.define('web_widget_dropdown_dynamic.basic_model', function (require) {
+    "use strict";
+
+    var BasicModel = require('web.BasicModel');
+
+    BasicModel.include({
+        /**
+         * Fetches all the values associated to the given fieldName.
+         *
+         * @param {Object} record - an element from the localData
+         * @param {Object} fieldName - the name of the field
+         * @param {Object} fieldInfo
+         * @returns {Promise<any>}
+         *          The promise is resolved with the fetched special values.
+         *          If this data is the same as the previously fetched one
+         *          (for the given parameters), no RPC is done and the promise
+         *          is resolved with the undefined value.
+         */
+        _fetchDynamicDropdownValues: function (record, fieldName, fieldInfo) {
+            var model = fieldInfo.options.model || record.model;
+            var method = fieldInfo.values || fieldInfo.options.values;
+            if (!method) {
+                return $.when();
+            }
+
+            var context = record.getContext({fieldName: fieldName});
+
+            // avoid rpc if not necessary
+            var hasChanged = this._saveSpecialDataCache(record, fieldName, {
+                context: context,
+            });
+            if (!hasChanged) {
+                return $.when();
+            }
+
+            return this._rpc({
+                model: model,
+                method: method,
+                context: context,
+            });
+        },
+    });
+});

web_widget_dropdown_dynamic/static/src/js/field_dynamic_dropdown.js

@@ -0,0 +1,140 @@
+/* 
+ * Copyright 2019 Brainbean Apps (https://brainbeanapps.com)
+ * License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+ */
+odoo.define('web_widget_dropdown_dynamic.field_dynamic_dropdown', function (require) {
+    "use strict";
+
+    var core = require('web.core');
+    var AbstractField = require('web.AbstractField');
+    var field_registry = require('web.field_registry');
+
+    var _lt = core._lt;
+
+    var FieldDynamicDropdown = AbstractField.extend({
+        description: _lt('Dynamic Dropdown'),
+        template: 'FieldSelection',
+        specialData: '_fetchDynamicDropdownValues',
+        supportedFieldTypes: ['selection', 'char', 'integer'],
+        events: _.extend({}, AbstractField.prototype.events, {
+            'change': '_onChange',
+        }),
+        /**
+         * @override
+         */
+        init: function () {
+            this._super.apply(this, arguments);
+            this._setValues();
+        },
+    
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+    
+        /**
+         * @override
+         * @returns {jQuery}
+         */
+        getFocusableElement: function () {
+            return this.$el.is('select') ? this.$el : $();
+        },
+        /**
+         * @override
+         */
+        isSet: function () {
+            return this.value !== false;
+        },
+        /**
+         * Listen to modifiers updates to hide/show the falsy value in the dropdown
+         * according to the required modifier.
+         *
+         * @override
+         */
+        updateModifiersValue: function () {
+            this._super.apply(this, arguments);
+            if (!this.attrs.modifiersValue.invisible && this.mode !== 'readonly') {
+                this._setValues();
+                this._renderEdit();
+            }
+        },
+    
+        //--------------------------------------------------------------------------
+        // Private
+        //--------------------------------------------------------------------------
+    
+        /**
+         * @override
+         * @private
+         */
+        _formatValue: function (value) {
+            var options = _.extend({}, this.nodeOptions, { data: this.recordData }, this.formatOptions);
+            var formattedValue = _.find(this.values, function (option) {
+                return option[0] === value;
+            });
+            if (!formattedValue) {
+                return value;
+            }
+            formattedValue = formattedValue[1];
+            if (options && options.escape) {
+                formattedValue = _.escape(formattedValue);
+            }
+            return formattedValue;
+        },
+        /**
+         * @override
+         * @private
+         */
+        _renderEdit: function () {
+            this.$el.empty();
+            for (var i = 0 ; i < this.values.length ; i++) {
+                this.$el.append($('<option/>', {
+                    value: JSON.stringify(this.values[i][0]),
+                    text: this.values[i][1]
+                }));
+            }
+            this.$el.val(JSON.stringify(this.value));
+        },
+        /**
+         * @override
+         * @private
+         */
+        _renderReadonly: function () {
+            this.$el.empty().text(this._formatValue(this.value));
+        },
+        /**
+         * @override
+         */
+        _reset: function () {
+            this._super.apply(this, arguments);
+            this._setValues();
+        },
+        /**
+         * Sets the possible field values.
+         *
+         * @private
+         */
+        _setValues: function () {
+            this.values = _.reject(this.record.specialData[this.name], function (v) {
+                return v[0] === false && v[1] === '';
+            });
+            if (!this.attrs.modifiersValue || !this.attrs.modifiersValue.required) {
+                this.values = [[false, this.attrs.placeholder || '']].concat(this.values);
+            }
+        },
+
+        //--------------------------------------------------------------------------
+        // Handlers
+        //--------------------------------------------------------------------------
+    
+        /**
+         * @private
+         */
+        _onChange: function () {
+            var value = JSON.parse(this.$el.val());
+            this._setValue(value.toString());
+        },
+    });
+    field_registry.add('dynamic_dropdown', FieldDynamicDropdown);
+
+    return FieldDynamicDropdown;
+});