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web/toolbar-geckoview.js

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+/* Copyright 2023 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @typedef {Object} ToolbarOptions
+ * @property {HTMLDivElement} mainContainer - Main container.
+ * @property {HTMLDivElement} container - Container for the toolbar.
+ * @property {HTMLButtonElement} download - Button to download the document.
+ */
+
+class Toolbar {
+  #buttons;
+
+  #eventBus;
+
+  /**
+   * @param {ToolbarOptions} options
+   * @param {EventBus} eventBus
+   * @param {Object} nimbusData - Nimbus configuration.
+   */
+  constructor(options, eventBus, nimbusData) {
+    this.#eventBus = eventBus;
+    const buttons = [
+      {
+        element: options.download,
+        eventName: "download",
+        nimbusName: "download-button",
+      },
+    ];
+
+    if (nimbusData) {
+      this.#buttons = [];
+      for (const button of buttons) {
+        if (nimbusData[button.nimbusName]) {
+          this.#buttons.push(button);
+        } else {
+          button.element.remove();
+        }
+      }
+      if (this.#buttons.length > 0) {
+        options.container.classList.add("show");
+      } else {
+        options.container.remove();
+        options.mainContainer.classList.add("noToolbar");
+      }
+    } else {
+      options.container.classList.add("show");
+      this.#buttons = buttons;
+    }
+
+    // Bind the event listeners for click and various other actions.
+    this.#bindListeners(options);
+  }
+
+  setPageNumber(pageNumber, pageLabel) {}
+
+  setPagesCount(pagesCount, hasPageLabels) {}
+
+  setPageScale(pageScaleValue, pageScale) {}
+
+  reset() {}
+
+  #bindListeners(options) {
+    // The buttons within the toolbar.
+    for (const { element, eventName, eventDetails } of this.#buttons) {
+      element.addEventListener("click", evt => {
+        if (eventName !== null) {
+          this.#eventBus.dispatch(eventName, { source: this, ...eventDetails });
+          this.#eventBus.dispatch("reporttelemetry", {
+            source: this,
+            details: {
+              type: "gv-buttons",
+              data: { id: `${element.id}_tapped` },
+            },
+          });
+        }
+      });
+    }
+  }
+
+  updateLoadingIndicatorState(loading = false) {}
+}
+
+export { Toolbar };