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diff --git a/addons/purchase_product_matrix/static/src/js/product_matrix_configurator.js b/addons/purchase_product_matrix/static/src/js/product_matrix_configurator.js
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+++ b/addons/purchase_product_matrix/static/src/js/product_matrix_configurator.js
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+odoo.define('purchase.product_matrix_configurator', function (require) {
+
+var relationalFields = require('web.relational_fields');
+var FieldsRegistry = require('web.field_registry');
+var core = require('web.core');
+var _t = core._t;
+
+/**
+ * The purchase.product_matrix_configurator widget is a widget extending FieldMany2One
+ * It triggers the opening of the matrix edition when the product has multiple variants.
+ *
+ *
+ * !!! WARNING !!!
+ *
+ * This widget is only designed for Purchase Order Lines.
+ * !!! It should only be used on a product_template field !!!
+ */
+var MatrixConfiguratorWidget = relationalFields.FieldMany2One.extend({
+    events: _.extend({}, relationalFields.FieldMany2One.prototype.events, {
+        'click .o_edit_product_configuration': '_onEditProductConfiguration'
+    }),
+
+    /**
+     * @override
+     */
+    _render: function () {
+       this._super.apply(this, arguments);
+       if (this.mode === 'edit' && this.value &&
+       (this._isConfigurableProduct())) {
+           this._addProductLinkButton();
+           this._addConfigurationEditButton();
+       } else if (this.mode === 'edit' && this.value) {
+           this._addProductLinkButton();
+       } else {
+           this.$('.o_edit_product_configuration').hide();
+       }
+    },
+
+    /**
+    * Add button linking to product_id/product_template_id form.
+    */
+    _addProductLinkButton: function () {
+       if (this.$('.o_external_button').length === 0) {
+           var $productLinkButton = $('<button>', {
+               type: 'button',
+               class: 'fa fa-external-link btn btn-secondary o_external_button',
+               tabindex: '-1',
+               draggable: false,
+               'aria-label': _t('External Link'),
+               title: _t('External Link')
+           });
+
+           var $inputDropdown = this.$('.o_input_dropdown');
+           $inputDropdown.after($productLinkButton);
+       }
+    },
+
+    /**
+    * If current product is configurable,
+    * Show edit button (in Edit Mode) after the product/product_template
+    */
+    _addConfigurationEditButton: function () {
+       var $inputDropdown = this.$('.o_input_dropdown');
+
+       if ($inputDropdown.length !== 0 &&
+           this.$('.o_edit_product_configuration').length === 0) {
+           var $editConfigurationButton = $('<button>', {
+               type: 'button',
+               class: 'fa fa-pencil btn btn-secondary o_edit_product_configuration',
+               tabindex: '-1',
+               draggable: false,
+               'aria-label': _t('Edit Configuration'),
+               title: _t('Edit Configuration')
+           });
+
+           $inputDropdown.after($editConfigurationButton);
+       }
+    },
+
+    /**
+     * Hook to override with _onEditProductConfiguration
+     * to know if edit pencil button has to be put next to the field
+     *
+     * @private
+     */
+    _isConfigurableProduct: function () {
+        return this.recordData.is_configurable_product;
+    },
+
+    /**
+     * Override catching changes on product_id or product_template_id.
+     * Calls _onTemplateChange in case of product_template change.
+     * Calls _onProductChange in case of product change.
+     * Shouldn't be overridden by product configurators
+     * or only to setup some data for further computation
+     * before calling super.
+     *
+     * @override
+     */
+    reset: async function (record, ev) {
+        await this._super(...arguments);
+        if (ev && ev.target === this && ev.data.changes && ev.data.changes.product_template_id && record.data.product_template_id.data.id) {
+            this._onTemplateChange(record.data.product_template_id.data.id, ev.data.dataPointID);
+        }
+    },
+
+    /**
+     * Hook for product_template based configurators
+     * (product configurator, matrix, ...).
+     *
+     * @param {integer} productTemplateId
+     * @param {String} dataPointID
+     *
+     * @private
+     */
+    _onTemplateChange: function (productTemplateId, dataPointId) {
+        var self = this;
+        this._rpc({
+            model: 'product.template',
+            method: 'get_single_product_variant',
+            args: [
+                productTemplateId
+            ]
+        }).then(function (result) {
+            if (result.product_id) {
+                self.trigger_up('field_changed', {
+                    dataPointID: dataPointId,
+                    changes: {
+                        product_id: {id: result.product_id},
+                    },
+                });
+            } else {
+                self._openMatrix(productTemplateId, dataPointId, false);
+            }
+        });
+    },
+
+    /**
+     * Hook for editing a configured line.
+     * The button triggering this function is only shown in Edit mode,
+     * when _isConfigurableProduct is True.
+     *
+     * @private
+     */
+    _onEditProductConfiguration: function () {
+        if (this.recordData.is_configurable_product) {
+            this._openMatrix(this.recordData.product_template_id.data.id, this.dataPointID, true);
+        }
+    },
+
+    _openMatrix: function (productTemplateId, dataPointId, edit) {
+        var attribs = edit ? this._getPTAVS() : [];
+        this.trigger_up('open_matrix', {
+            product_template_id: productTemplateId,
+            model: 'purchase.order',
+            dataPointId: dataPointId,
+            edit: edit,
+            editedCellAttributes: attribs,
+            // used to focus the cell representing the line on which the pencil was clicked.
+        });
+    },
+
+    /**
+     * Returns the list of attribute ids (product.template.attribute.value)
+     * from the current POLine.
+    */
+    _getPTAVS: function () {
+        var PTAVSIDS = [];
+        _.each(this.recordData.product_no_variant_attribute_value_ids.res_ids, function (id) {
+            PTAVSIDS.push(id);
+        });
+        _.each(this.recordData.product_template_attribute_value_ids.res_ids, function (id) {
+            PTAVSIDS.push(id);
+        });
+        return PTAVSIDS.sort(function (a, b) {return a - b;});
+    }
+});
+
+FieldsRegistry.add('matrix_configurator', MatrixConfiguratorWidget);
+
+return MatrixConfiguratorWidget;
+
+});