Load additional scripts in public share auth page when needed

Before the public share auth page is rendered an event is dispatched
that can be used by apps to load additional scripts. This event is now
used to load the scripts that, when run on the browser, will inject the
Talk UI as needed in the page generated by the server.

The scripts will be loaded only when the share has the "send password by
Talk" option enabled; they add a button to the page that, when pressed,
creates a new public share auth room with the sharer and shows, in a
sidebar, the Talk UI for that room.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

1 files changed, 132 insertions, 0 deletions

diff --git a/css/publicshareauth.scss b/css/publicshareauth.scss
new file mode 100644
index 000000000..218e385be
--- /dev/null
+++ b/css/publicshareauth.scss
@@ -0,0 +1,132 @@
+/* Request password button has the appearance of the log in button */
+.request-password-wrapper {
+	position: relative;
+	width: 280px;
+	margin: 16px auto;
+}
+
+.request-password-wrapper .icon {
+	position: absolute;
+	top: 23px;
+	right: 23px;
+	pointer-events: none;
+}
+
+input#request-password-button {
+	width: 269px;
+	padding: 10px 10px;
+}
+
+input#request-password-button:disabled ~ .icon {
+	opacity: 0.5;
+}
+
+
+
+/* Special layout to include the Talk sidebar */
+/* The original style of the body is kept until the layout has been adjusted to
+ * include the Talk sidebar. If only "#body-login" was used, immediately after
+ * load and before the sidebar was injected the original elements would be using
+ * the style for the adjusted layout, which is not the proper one for them, and
+ * this would cause the elements to "jump" to their final position once the
+ * layout was adjusted. */
+#body-login.talk-sidebar-enabled {
+	flex-direction: row;
+	align-items: stretch;
+}
+
+/* #body-login should be used to override the #content rules set in server. */
+#body-login #content {
+	flex-grow: 1;
+
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+
+	height: auto;
+
+	overflow-x: hidden;
+
+	/* Override "padding-top: 50px" set in server. */
+	padding-top: 0;
+}
+
+/* Properties based on the app-sidebar */
+#talk-sidebar {
+	position: relative;
+	flex-shrink: 0;
+	width: 27vw;
+	min-width: 300px;
+	height: 100vh;
+
+	background: var(--color-main-background);
+	border-left: 1px solid var(--color-border);
+
+	overflow-x: hidden;
+	overflow-y: auto;
+	z-index: 500;
+
+	transition: 300ms width ease-in-out,
+				300ms min-width ease-in-out;
+}
+
+#talk-sidebar.disappear {
+	width: 0;
+	min-width: 0;
+	border-left-width: 0;
+}
+
+#talk-sidebar #commentsTabView ~ #emptycontent {
+	display: none !important;
+}
+
+
+
+/**
+ * Cascade parent element height to the chat view in the sidebar to limit the
+ * vertical scroll bar only to the list of messages. Otherwise, the vertical
+ * scroll bar would be shown for the whole sidebar and everything would be
+ * moved when scrolling to see overflown messages.
+ *
+ * The list of messages should stretch to fill the available space at the bottom
+ * of the right sidebar, so the height is cascaded using flex boxes.
+ */
+#talk-sidebar {
+	display: flex;
+	flex-direction: column;
+}
+
+#talk-sidebar #commentsTabView {
+	display: flex;
+	flex-direction: column;
+	overflow: hidden;
+
+	flex-grow: 1;
+}
+
+#talk-sidebar .comments {
+	overflow-y: auto;
+
+	/* Needed for proper calculation of comment positions in the scrolling
+	   container (as otherwise the comment position is calculated with respect
+	   to the closest ancestor with a relative position) */
+	position: relative;
+}
+
+#talk-sidebar #commentsTabView .newCommentRow,
+#talk-sidebar #commentsTabView .comments {
+	padding-left: 15px;
+	padding-right: 15px;
+}
+
+
+
+/* Unset conflicting rules from guest.css for the sidebar */
+#talk-sidebar {
+	text-align: left;
+}
+
+#talk-sidebar form {
+	width: unset;
+	margin: 0;
+}