From d58c39126f6e1754e29b6f3bbc01f0f6a3ea2581 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 02 Jun 2014 10:35:12 -0400
Subject: [PATCH] Some more improvemements on content structure, text representation and keyboard navigation within the mail view
---
program/js/list.js | 182 +++++++++++++++++++++++++++++++++------------
1 files changed, 132 insertions(+), 50 deletions(-)
diff --git a/program/js/list.js b/program/js/list.js
index 9b7779c..65d4a92 100644
--- a/program/js/list.js
+++ b/program/js/list.js
@@ -1,21 +1,35 @@
-/*
- +-----------------------------------------------------------------------+
- | Roundcube List Widget |
- | |
- | This file is part of the Roundcube Webmail client |
- | Copyright (C) 2006-2013, The Roundcube Dev Team |
- | |
- | Licensed under the GNU General Public License version 3 or |
- | any later version with exceptions for skins & plugins. |
- | See the README file for a full license statement. |
- | |
- +-----------------------------------------------------------------------+
- | Authors: Thomas Bruederli <roundcube@gmail.com> |
- | Charles McNulty <charles@charlesmcnulty.com> |
- +-----------------------------------------------------------------------+
- | Requires: common.js |
- +-----------------------------------------------------------------------+
-*/
+/**
+ * Roundcube List Widget
+ *
+ * This file is part of the Roundcube Webmail client
+ *
+ * @licstart The following is the entire license notice for the
+ * JavaScript code in this file.
+ *
+ * Copyright (c) 2005-2014, The Roundcube Dev Team
+ *
+ * The JavaScript code in this page is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GNU GPL) as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version. The code is distributed WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
+ *
+ * As additional permission under GNU GPL version 3 section 7, you
+ * may distribute non-source (e.g., minimized or compacted) forms of
+ * that code without the copy of the GNU GPL normally required by
+ * section 4, provided you include this license notice and a URL
+ * through which recipients can access the Corresponding Source.
+ *
+ * @licend The above is the entire license notice
+ * for the JavaScript code in this file.
+ *
+ * @author Thomas Bruederli <roundcube@gmail.com>
+ * @author Charles McNulty <charles@charlesmcnulty.com>
+ *
+ * @requires jquery.js, common.js
+ */
/**
@@ -37,7 +51,7 @@
this.rowcount = 0;
this.colcount = 0;
- this.subject_col = -1;
+ this.subject_col = 0;
this.modkey = 0;
this.multiselect = false;
this.multiexpand = false;
@@ -84,7 +98,7 @@
this.rows = {};
this.rowcount = 0;
- var r, len, rows = this.tbody.childNodes;
+ var r, len, rows = this.tbody.childNodes, me = this;
for (r=0, len=rows.length; r<len; r++) {
this.rowcount += this.init_row(rows[r]) ? 1 : 0;
@@ -94,8 +108,13 @@
this.frame = this.list.parentNode;
// set body events
- if (this.keyboard)
+ if (this.keyboard) {
rcube_event.add_listener({event:'keydown', object:this, method:'key_press'});
+
+ // allow the table element to receive focus.
+ $(this.list).attr('tabindex', '0')
+ .on('focus', function(e){ me.focus(e); });
+ }
}
return this;
@@ -161,7 +180,7 @@
if (this.fixed_header) { // copy (modified) fixed header back to the actual table
$(this.list.tHead).replaceWith($(this.fixed_header).find('thead').clone());
- $(this.list.tHead).find('tr td').attr('style', ''); // remove fixed widths
+ $(this.list.tHead).find('tr td').attr('style', '').find('a').attr('tabindex', '-1'); // remove fixed widths
}
else if (!bw.touch && this.list.className.indexOf('fixedheader') >= 0) {
this.init_fixed_header();
@@ -188,6 +207,7 @@
if (!this.fixed_header) {
this.fixed_header = $('<table>')
.attr('class', this.list.className + ' fixedcopy')
+ .attr('role', 'presentation')
.css({ position:'fixed' })
.append(clone)
.append('<tbody></tbody>');
@@ -205,6 +225,12 @@
else {
$(this.fixed_header).find('thead').replaceWith(clone);
}
+
+ // avoid scrolling header links being focused
+ $(this.list.tHead).find('a.sortcol').attr('tabindex', '-1');
+
+ // set tabindex to fixed header sort links
+ clone.find('a.sortcol').attr('tabindex', '0');
this.thead = clone.get(0);
this.resize();
@@ -248,6 +274,7 @@
this.rows = {};
this.rowcount = 0;
+ this.last_selected = 0;
if (sel)
this.clear_selection();
@@ -301,11 +328,13 @@
if (row.style) $.extend(domrow.style, row.style);
if (row.uid) $(domrow).data('uid', row.uid);
- for (var domcell, col, i=0; row.cols && i < row.cols.length; i++) {
+ for (var e, domcell, col, i=0; row.cols && i < row.cols.length; i++) {
col = row.cols[i];
domcell = document.createElement(this.col_tagname());
if (col.className) domcell.className = col.className;
if (col.innerHTML) domcell.innerHTML = col.innerHTML;
+ for (e in col.events)
+ domcell['on' + e] = col.events[e];
domrow.appendChild(domcell);
}
@@ -354,39 +383,66 @@
*/
focus: function(e)
{
- var n, id;
+ if (this.focused)
+ return;
+
this.focused = true;
- for (n in this.selection) {
- id = this.selection[n];
- if (this.rows[id] && this.rows[id].obj) {
- $(this.rows[id].obj).addClass('selected').removeClass('unfocused');
- }
+ if (e)
+ rcube_event.cancel(e);
+
+ var focus_elem = null;
+
+ if (this.last_selected && this.rows[this.last_selected]) {
+ focus_elem = $(this.rows[this.last_selected].obj).find(this.col_tagname()).eq(this.subject_col).attr('tabindex', '0');
}
// Un-focus already focused elements (#1487123, #1487316, #1488600, #1488620)
- // It looks that window.focus() does the job for all browsers, but not Firefox (#1489058)
- $('iframe,:focus:not(body)').blur();
- window.focus();
+ if (focus_elem && focus_elem.length) {
+ // We now fix this by explicitly assigning focus to a dedicated link element
+ this.focus_noscroll(focus_elem);
+ }
+ else {
+ // It looks that window.focus() does the job for all browsers, but not Firefox (#1489058)
+ $('iframe,:focus:not(body)').blur();
+ window.focus();
+ }
- if (e || (e = window.event))
- rcube_event.cancel(e);
+ $(this.list).addClass('focus').removeAttr('tabindex');
+
+ // set internal focus pointer to first row
+ if (!this.last_selected)
+ this.select_first(CONTROL_KEY);
},
/**
* remove focus from the list
*/
-blur: function()
+blur: function(e)
{
- var n, id;
this.focused = false;
- for (n in this.selection) {
- id = this.selection[n];
- if (this.rows[id] && this.rows[id].obj) {
- $(this.rows[id].obj).removeClass('selected focused').addClass('unfocused');
- }
+
+ // avoid the table getting focus right again
+ var me = this;
+ setTimeout(function(){
+ $(me.list).removeClass('focus').attr('tabindex', '0');
+ }, 20);
+
+ if (this.last_selected && this.rows[this.last_selected]) {
+ $(this.rows[this.last_selected].obj)
+ .find(this.col_tagname()).eq(this.subject_col).removeAttr('tabindex');
}
+},
+
+/**
+ * Focus the given element without scrolling the list container
+ */
+focus_noscroll: function(elem)
+{
+ var y = this.frame.scrollTop || this.frame.scrollY;
+ elem.focus();
+ this.frame.scrollTop = y;
},
@@ -506,6 +562,8 @@
}
this.rows[id].clicked = now;
+ this.focus();
+
return false;
},
@@ -865,16 +923,22 @@
if (this.selection.join(',') != select_before)
this.triggerEvent('select');
- if (this.last_selected != 0 && this.rows[this.last_selected])
- $(this.rows[this.last_selected].obj).removeClass('focused');
+ if (this.last_selected != 0 && this.rows[this.last_selected]) {
+ $(this.rows[this.last_selected].obj).removeClass('focused')
+ .find(this.col_tagname()).eq(this.subject_col).removeAttr('tabindex');
+ }
// unselect if toggleselect is active and the same row was clicked again
if (this.toggleselect && this.last_selected == id) {
this.clear_selection();
id = null;
}
- else
+ else {
$(this.rows[id].obj).addClass('focused');
+ // set cursor focus to link inside selected row
+ if (this.focused)
+ this.focus_noscroll($(this.rows[id].obj).find(this.col_tagname()).eq(this.subject_col).attr('tabindex', '0'));
+ }
if (!this.selection.length)
this.shift_start = null;
@@ -1022,7 +1086,7 @@
this.highlight_row(n, true, true);
}
else {
- $(this.rows[n].obj).removeClass('selected').removeClass('unfocused');
+ $(this.rows[n].obj).removeClass('selected').removeAttr('aria-selected');
}
}
@@ -1079,14 +1143,16 @@
else {
for (n in this.selection)
if (this.rows[this.selection[n]]) {
- $(this.rows[this.selection[n]].obj).removeClass('selected').removeClass('unfocused');
+ $(this.rows[this.selection[n]].obj).removeClass('selected').removeAttr('aria-selected');
}
this.selection = [];
}
- if (num_select && !this.selection.length && !no_event)
+ if (num_select && !this.selection.length && !no_event) {
this.triggerEvent('select');
+ this.last_selected = 0;
+ }
},
@@ -1140,13 +1206,13 @@
if (this.selection.length > 1 || !this.in_selection(id)) {
this.clear_selection(null, true);
this.selection[0] = id;
- $(this.rows[id].obj).addClass('selected');
+ $(this.rows[id].obj).addClass('selected').attr('aria-selected', 'true');
}
}
else {
if (!this.in_selection(id)) { // select row
this.selection.push(id);
- $(this.rows[id].obj).addClass('selected');
+ $(this.rows[id].obj).addClass('selected').attr('aria-selected', 'true');
if (!norecur && !this.rows[id].expanded)
this.highlight_children(id, true);
}
@@ -1156,7 +1222,7 @@
a_post = this.selection.slice(p+1, this.selection.length);
this.selection = a_pre.concat(a_post);
- $(this.rows[id].obj).removeClass('selected').removeClass('unfocused');
+ $(this.rows[id].obj).removeClass('selected').removeAttr('aria-selected');
if (!norecur && !this.rows[id].expanded)
this.highlight_children(id, false);
}
@@ -1236,6 +1302,14 @@
return rcube_event.cancel(e);
+ case 9: // Tab
+ this.blur();
+ break;
+
+ case 13: // Enter
+ if (!this.selection.length)
+ this.select_row(this.last_selected, mod_key, false);
+
default:
this.key_pressed = keyCode;
this.modkey = mod_key;
@@ -1295,9 +1369,17 @@
}
if (new_row) {
+ // simulate ctr-key if no rows are selected
+ if (!mod_key && !this.selection.length)
+ mod_key = CONTROL_KEY;
+
this.select_row(new_row.uid, mod_key, false);
this.scrollto(new_row.uid);
}
+ else if (!new_row && !selected_row) {
+ // select the first row if none selected yet
+ this.select_first(CONTROL_KEY);
+ }
return false;
},
--
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