web-ribbon v17 added for testing

web_environment_ribbon/static/src/components/environment_ribbon/ribbon.css

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+/* Copyright 2015 Francesco OpenCode Apruzzese <cescoap@gmail.com>
+   Copyright 2017 Thomas Binsfeld <thomas.binsfeld@acsone.eu>
+   Copyright 2021 Andreas Perhab <a.perhab@wtioit.at>
+ * License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). */
+
+.test-ribbon {
+    width: 300px;
+    top: 25px;
+    left: -100px;
+    text-align: center;
+    padding: 10px;
+    line-height: 20px;
+    letter-spacing: 1px;
+    color: #f0f0f0;
+    -webkit-transform: rotate(-45deg);
+    -ms-transform: rotate(-45deg);
+    -moz-transform: rotate(-45deg);
+    -o-transform: rotate(-45deg);
+    transform: rotate(-45deg);
+    z-index: 9999;
+    position: fixed;
+    box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
+    background: rgba(255, 0, 0, 0.6);
+    pointer-events: none;
+}
+
+.test-ribbon b {
+    font-size: 20px;
+}

web_environment_ribbon/static/src/components/environment_ribbon/ribbon.esm.js

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+/** @odoo-module **/
+
+import {Component, xml} from "@odoo/owl";
+import {useBus, useService} from "@web/core/utils/hooks";
+import {registry} from "@web/core/registry";
+
+export class WebEnvironmentRibbon extends Component {
+    setup() {
+        this.orm = useService("orm");
+        useBus(this.env.bus, "WEB_CLIENT_READY", this.showRibbon.bind(this));
+    }
+
+    // Code from: http://jsfiddle.net/WK_of_Angmar/xgA5C/
+    validStrColour(strToTest) {
+        if (strToTest === "") {
+            return false;
+        }
+        if (strToTest === "inherit") {
+            return true;
+        }
+        if (strToTest === "transparent") {
+            return true;
+        }
+        const image = document.createElement("img");
+        image.style.color = "rgb(0, 0, 0)";
+        image.style.color = strToTest;
+        if (image.style.color !== "rgb(0, 0, 0)") {
+            return true;
+        }
+        image.style.color = "rgb(255, 255, 255)";
+        image.style.color = strToTest;
+        return image.style.color !== "rgb(255, 255, 255)";
+    }
+
+    showRibbon() {
+        const ribbon = $(".test-ribbon");
+        const self = this;
+        ribbon.hide();
+        // Get ribbon data from backend
+        self.orm
+            .call("web.environment.ribbon.backend", "get_environment_ribbon")
+            .then(function (ribbon_data) {
+                // Ribbon name
+                if (ribbon_data.name && ribbon_data.name !== "False") {
+                    ribbon.show();
+                    ribbon.html(ribbon_data.name);
+                }
+                // Ribbon color
+                if (ribbon_data.color && self.validStrColour(ribbon_data.color)) {
+                    ribbon.css("color", ribbon_data.color);
+                }
+                // Ribbon background color
+                if (
+                    ribbon_data.background_color &&
+                    self.validStrColour(ribbon_data.background_color)
+                ) {
+                    ribbon.css("background-color", ribbon_data.background_color);
+                }
+            });
+    }
+}
+
+WebEnvironmentRibbon.props = {};
+WebEnvironmentRibbon.template = xml`<div class="test-ribbon" />`;
+
+registry.category("main_components").add("WebEnvironmentRibbon", {
+    Component: WebEnvironmentRibbon,
+});