New notification cleaning mode (#89)

This PR adds a new notification cleaning mode, super perfectly tuned for accessibility, and removes the previous notification cleaning functionality as it's now redundant.

* w.i.p. notif clearing mode

* Better CSS for selected notification and shorter text if Stretch is off

* wip for rebase ~

* all working in notif clearing mode, except the actual removal

* bulk delete route for piggo

* cleaning + refactor. endpoint gives 422 for some reason

* formatting

* use the right route

* fix broken destroy_multiple

* load more notifs after succ cleaning

* satisfy eslint

* Removed CSS for the old notif delete button

* Tabindex=0 is mandatory

In order to make it possible to tab to this element you must have tab index = 0. Removing this violates WCAG and makes it impossible to use the interface without good eyesight and a mouse. So nobody with certain mobility impairments, vision impairments, or brain injuries would be able to use this feature if you don't have tabindex=0

* Corrected aria-label

Previous label implied a different behavior from what actually happens

* aria role localization & made the overlay behave like a checkbox

* checkboxes css and better contrast

* color tuning for the notif overlay

* fanceh checkboxes etc and nice backgrounds

* SHUT UP TRAVIS

2 files changed, 156 insertions, 0 deletions

diff --git a/app/javascript/glitch/components/column/notif_cleaning_widget/container.js b/app/javascript/glitch/components/column/notif_cleaning_widget/container.js
new file mode 100644
index 000000000..bf079e3c4
--- /dev/null
+++ b/app/javascript/glitch/components/column/notif_cleaning_widget/container.js
@@ -0,0 +1,56 @@
+/*
+
+`<NotificationPurgeButtonsContainer>`
+=========================
+
+This container connects `<NotificationPurgeButtons>`s to the Redux store.
+
+*/
+
+//  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+/*
+
+Imports:
+--------
+
+*/
+
+//  Package imports  //
+import { connect } from 'react-redux';
+
+//  Our imports  //
+import NotificationPurgeButtons from './notification_purge_buttons';
+import {
+  deleteMarkedNotifications,
+  enterNotificationClearingMode,
+} from '../../../../mastodon/actions/notifications';
+
+//  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+/*
+
+Dispatch mapping:
+-----------------
+
+The `mapDispatchToProps()` function maps dispatches to our store to the
+various props of our component. We only need to provide a dispatch for
+deleting notifications.
+
+*/
+
+const mapDispatchToProps = dispatch => ({
+  onEnterCleaningMode(yes) {
+    dispatch(enterNotificationClearingMode(yes));
+  },
+
+  onDeleteMarkedNotifications() {
+    dispatch(deleteMarkedNotifications());
+  },
+});
+
+const mapStateToProps = state => ({
+  active: state.getIn(['notifications', 'cleaningMode']),
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(NotificationPurgeButtons);
diff --git a/app/javascript/glitch/components/column/notif_cleaning_widget/notification_purge_buttons.js b/app/javascript/glitch/components/column/notif_cleaning_widget/notification_purge_buttons.js
new file mode 100644
index 000000000..e41572256
--- /dev/null
+++ b/app/javascript/glitch/components/column/notif_cleaning_widget/notification_purge_buttons.js
@@ -0,0 +1,100 @@
+/**
+ * Buttons widget for controlling the notification clearing mode.
+ * In idle state, the cleaning mode button is shown. When the mode is active,
+ * a Confirm and Abort buttons are shown in its place.
+ */
+
+
+//  Package imports  //
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+//  Mastodon imports  //
+
+//  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+
+const messages = defineMessages({
+  enter : { id: 'notification_purge.start', defaultMessage: 'Enter notification cleaning mode' },
+  accept : { id: 'notification_purge.confirm', defaultMessage: 'Dismiss selected notifications' },
+  abort : { id: 'notification_purge.abort', defaultMessage: 'Leave cleaning mode' },
+});
+
+@injectIntl
+export default class NotificationPurgeButtons extends ImmutablePureComponent {
+
+  static propTypes = {
+    // Nukes all marked notifications
+    onDeleteMarkedNotifications : PropTypes.func.isRequired,
+    // Enables or disables the mode
+    // and also clears the marked status of all notifications
+    onEnterCleaningMode : PropTypes.func.isRequired,
+    // Active state, changed via onStateChange()
+    active: PropTypes.bool.isRequired,
+    // i18n
+    intl: PropTypes.object.isRequired,
+  };
+
+  onEnterBtnClick = () => {
+    this.props.onEnterCleaningMode(true);
+  }
+
+  onAcceptBtnClick = () => {
+    this.props.onDeleteMarkedNotifications();
+  }
+
+  onAbortBtnClick = () => {
+    this.props.onEnterCleaningMode(false);
+  }
+
+  render () {
+    const { intl, active } = this.props;
+
+    const msgEnter = intl.formatMessage(messages.enter);
+    const msgAccept = intl.formatMessage(messages.accept);
+    const msgAbort = intl.formatMessage(messages.abort);
+
+    let enterButton, acceptButton, abortButton;
+
+    if (active) {
+      acceptButton = (
+        <button
+          className='active'
+          aria-label={msgAccept}
+          title={msgAccept}
+          onClick={this.onAcceptBtnClick}
+        >
+          <i className='fa fa-check' />
+        </button>
+      );
+      abortButton = (
+        <button
+          className='active'
+          aria-label={msgAbort}
+          title={msgAbort}
+          onClick={this.onAbortBtnClick}
+        >
+          <i className='fa fa-times' />
+        </button>
+      );
+    } else {
+      enterButton = (
+        <button
+          aria-label={msgEnter}
+          title={msgEnter}
+          onClick={this.onEnterBtnClick}
+        >
+          <i className='fa fa-eraser' />
+        </button>
+      );
+    }
+
+    return (
+      <div className='column-header__notif-cleaning-buttons'>
+        {acceptButton}{abortButton}{enterButton}
+      </div>
+    );
+  }
+
+}