/* 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 { html } from "chrome://global/content/vendor/lit.all.mjs";
import { MozLitElement } from "chrome://global/content/lit-utils.mjs";
// eslint-disable-next-line import/no-unassigned-import
import "chrome://global/content/elements/moz-button.mjs";
const lazy = {};
ChromeUtils.defineLazyGetter(lazy, "screenshotsLocalization", () => {
return new Localization(["browser/screenshots.ftl"], true);
});
ChromeUtils.defineESModuleGetters(lazy, {
AppConstants: "resource://gre/modules/AppConstants.sys.mjs",
ScreenshotsUtils: "resource:///modules/ScreenshotsUtils.sys.mjs",
ShortcutUtils: "resource://gre/modules/ShortcutUtils.sys.mjs",
});
class ScreenshotsPreview extends MozLitElement {
static queries = {
retryButtonEl: "#retry",
cancelButtonEl: "#cancel",
copyButtonEl: "#copy",
downloadButtonEl: "#download",
previewImg: "#preview-image",
buttons: { all: "moz-button" },
};
constructor() {
super();
// we get passed the <browser> as a param via TabDialogBox.open()
this.openerBrowser = window.arguments[0];
let [downloadKey, copyKey] =
lazy.screenshotsLocalization.formatMessagesSync([
{ id: "screenshots-component-download-key" },
{ id: "screenshots-component-copy-key" },
]);
this.downloadKey = downloadKey.value;
this.copyKey = copyKey.value;
}
connectedCallback() {
super.connectedCallback();
window.addEventListener("keydown", this, true);
this.updateL10nAttributes();
}
async updateL10nAttributes() {
let accelString = lazy.ShortcutUtils.getModifierString("accel");
let copyShorcut = accelString + this.copyKey;
let downloadShortcut = accelString + this.downloadKey;
await this.updateComplete;
document.l10n.setAttributes(
this.copyButtonEl,
"screenshots-component-copy-button-2",
{ shortcut: copyShorcut }
);
document.l10n.setAttributes(
this.downloadButtonEl,
"screenshots-component-download-button-2",
{ shortcut: downloadShortcut }
);
}
close() {
window.removeEventListener("keydown", this, true);
URL.revokeObjectURL(this.previewImg.src);
window.close();
}
handleEvent(event) {
switch (event.type) {
case "click":
this.handleClick(event);
break;
case "keydown":
this.handleKeydown(event);
break;
}
}
handleClick(event) {
switch (event.target.id) {
case "retry":
lazy.ScreenshotsUtils.scheduleRetry(this.openerBrowser, "PreviewRetry");
this.close();
break;
case "cancel":
this.close();
lazy.ScreenshotsUtils.recordTelemetryEvent("canceledPreviewCancel");
break;
case "copy":
this.saveToClipboard();
break;
case "download":
this.saveToFile();
break;
}
}
handleKeydown(event) {
switch (event.key) {
case this.copyKey.toLowerCase():
if (this.getAccelKey(event)) {
event.preventDefault();
event.stopPropagation();
this.saveToClipboard();
}
break;
case this.downloadKey.toLowerCase():
if (this.getAccelKey(event)) {
event.preventDefault();
event.stopPropagation();
this.saveToFile();
}
break;
}
}
/**
* If the image is complete and the height is greater than 0, we can resolve.
* Otherwise wait for a load event on the image and resolve then.
* @returns {Promise<String>} Resolves that resolves to the preview image src
* once the image is loaded.
*/
async imageLoadedPromise() {
await this.updateComplete;
if (this.previewImg.complete && this.previewImg.height > 0) {
return Promise.resolve(this.previewImg.src);
}
return new Promise(resolve => {
function onImageLoaded(event) {
resolve(event.target.src);
}
this.previewImg.addEventListener("load", onImageLoaded, { once: true });
});
}
getAccelKey(event) {
if (lazy.AppConstants.platform === "macosx") {
return event.metaKey;
}
return event.ctrlKey;
}
/**
* Enable all the buttons. This will only happen when the download button is
* clicked and the file picker is closed without saving the image.
*/
enableButtons() {
this.buttons.forEach(button => (button.disabled = false));
}
/**
* Disable all the buttons so they can't be clicked multiple times before
* successfully copying or downloading the image.
*/
disableButtons() {
this.buttons.forEach(button => (button.disabled = true));
}
async saveToFile() {
// Disable buttons so they can't by clicked again while waiting for the
// image to load.
this.disableButtons();
// Wait for the image to be loaded before we save it
let imageSrc = await this.imageLoadedPromise();
let downloadSucceeded = await lazy.ScreenshotsUtils.downloadScreenshot(
null,
imageSrc,
this.openerBrowser,
"PreviewDownload"
);
if (downloadSucceeded) {
this.close();
} else {
this.enableButtons();
}
}
async saveToClipboard() {
// Disable buttons so they can't by clicked again while waiting for the
// image to load
this.disableButtons();
// Wait for the image to be loaded before we copy it
let imageSrc = await this.imageLoadedPromise();
await lazy.ScreenshotsUtils.copyScreenshot(
imageSrc,
this.openerBrowser,
"PreviewCopy"
);
this.close();
}
/**
* Set the focus to the most recent saved method.
* This will default to the download button.
* @param {String} buttonToFocus
*/
focusButton(buttonToFocus) {
if (buttonToFocus === "copy") {
this.copyButtonEl.focus({ focusVisible: true });
} else {
this.downloadButtonEl.focus({ focusVisible: true });
}
}
render() {
return html`
<link
rel="stylesheet"
href="chrome://browser/content/screenshots/screenshots-preview.css"
/>
<div class="image-view">
<div class="preview-buttons">
<moz-button
id="retry"
data-l10n-id="screenshots-component-retry-button"
iconSrc="chrome://global/skin/icons/reload.svg"
@click=${this.handleClick}
></moz-button>
<moz-button
id="cancel"
data-l10n-id="screenshots-component-cancel-button"
iconSrc="chrome://global/skin/icons/close.svg"
@click=${this.handleClick}
></moz-button>
<moz-button
id="copy"
data-l10n-id="screenshots-component-copy-button-2"
data-l10n-args='{ "shortcut": "" }'
iconSrc="chrome://global/skin/icons/edit-copy.svg"
@click=${this.handleClick}
></moz-button>
<moz-button
id="download"
type="primary"
data-l10n-id="screenshots-component-download-button-2"
data-l10n-args='{ "shortcut": "" }'
iconSrc="chrome://browser/skin/downloads/downloads.svg"
@click=${this.handleClick}
></moz-button>
</div>
<div id="preview-image-container">
<img id="preview-image" />
</div>
</div>
`;
}
}
customElements.define("screenshots-preview", ScreenshotsPreview);
