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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at http://mozilla.org/MPL/2.0/. */
import { MailTabButton } from "chrome://messenger/content/unifiedtoolbar/mail-tab-button.mjs";
const lazy = {};
ChromeUtils.defineModuleGetter(
lazy,
"FolderUtils",
"resource:///modules/FolderUtils.jsm"
);
class FolderLocationButton extends MailTabButton {
/**
* Image element displaying the icon on the button.
*
* @type {Image?}
*/
#icon = null;
/**
* If we've added our event listeners, especially to the current about3pane.
*
* @type {boolean}
*/
#addedListeners = false;
observed3PaneEvents = ["folderURIChanged"];
observedAboutMessageEvents = [];
connectedCallback() {
super.connectedCallback();
if (this.#addedListeners) {
return;
}
this.#icon = this.querySelector(".button-icon");
this.onCommandContextChange();
this.#addedListeners = true;
const popup = document.getElementById(this.getAttribute("popup"));
popup.addEventListener("command", this.#handlePopupCommand);
}
disconnectedCallback() {
super.disconnectedCallback();
if (this.#addedListeners) {
const popup = document.getElementById(this.getAttribute("popup"));
popup.removeEventListener("command", this.#handlePopupCommand);
}
}
#handlePopupCommand = event => {
const about3Pane = document.getElementById("tabmail").currentAbout3Pane;
about3Pane.displayFolder(event.target._folder.URI);
};
/**
* Update the label and icon of the button from the currently selected folder
* in the local 3pane.
*/
onCommandContextChange() {
if (!this.#icon) {
return;
}
const { gFolder } =
document.getElementById("tabmail").currentAbout3Pane ?? {};
if (!gFolder) {
this.disabled = true;
return;
}
this.disabled = false;
this.label.textContent = gFolder.name;
this.#icon.style = `content: url(${lazy.FolderUtils.getFolderIcon(
gFolder
)});`;
}
}
customElements.define("folder-location-button", FolderLocationButton, {
extends: "button",
});
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