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roundcubemail/program/js/list.js

859 lines
20 KiB
JavaScript

/*
+-----------------------------------------------------------------------+
| RoundCube List Widget |
| |
| This file is part of the RoundCube Webmail client |
| Copyright (C) 2006-2009, RoundCube Dev, - Switzerland |
| Licensed under the GNU GPL |
| |
+-----------------------------------------------------------------------+
| Authors: Thomas Bruederli <roundcube@gmail.com> |
| Charles McNulty <charles@charlesmcnulty.com> |
+-----------------------------------------------------------------------+
| Requires: common.js |
+-----------------------------------------------------------------------+
$Id$
*/
/**
* RoundCube List Widget class
* @contructor
*/
function rcube_list_widget(list, p)
{
// static contants
this.ENTER_KEY = 13;
this.DELETE_KEY = 46;
this.BACKSPACE_KEY = 8;
this.list = list ? list : null;
this.frame = null;
this.rows = [];
this.selection = [];
this.rowcount = 0;
this.subject_col = -1;
this.shiftkey = false;
this.multiselect = false;
this.multi_selecting = false;
this.draggable = false;
this.keyboard = false;
this.toggleselect = false;
this.dont_select = false;
this.drag_active = false;
this.last_selected = 0;
this.shift_start = 0;
this.in_selection_before = false;
this.focused = false;
this.drag_mouse_start = null;
this.dblclick_time = 600;
this.row_init = function(){};
// overwrite default paramaters
if (p && typeof(p)=='object')
for (var n in p)
this[n] = p[n];
}
rcube_list_widget.prototype = {
/**
* get all message rows from HTML table and init each row
*/
init: function()
{
if (this.list && this.list.tBodies[0])
{
this.rows = new Array();
this.rowcount = 0;
var row;
for(var r=0; r<this.list.tBodies[0].childNodes.length; r++)
{
row = this.list.tBodies[0].childNodes[r];
while (row && (row.nodeType != 1 || row.style.display == 'none'))
{
row = row.nextSibling;
r++;
}
this.init_row(row);
this.rowcount++;
}
this.frame = this.list.parentNode;
// set body events
if (this.keyboard) {
rcube_event.add_listener({element:document, event:'keyup', object:this, method:'key_press'});
rcube_event.add_listener({element:document, event:'keydown', object:this, method:'key_down'});
}
}
},
/**
* Init list row and set mouse events on it
*/
init_row: function(row)
{
// make references in internal array and set event handlers
if (row && String(row.id).match(/rcmrow([a-z0-9\-_=\+\/]+)/i))
{
var p = this;
var uid = RegExp.$1;
row.uid = uid;
this.rows[uid] = {uid:uid, id:row.id, obj:row, classname:row.className};
// set eventhandlers to table row
row.onmousedown = function(e){ return p.drag_row(e, this.uid); };
row.onmouseup = function(e){ return p.click_row(e, this.uid); };
if (document.all)
row.onselectstart = function() { return false; };
this.row_init(this.rows[uid]);
}
},
/**
* Remove all list rows
*/
clear: function(sel)
{
var tbody = document.createElement('TBODY');
this.list.insertBefore(tbody, this.list.tBodies[0]);
this.list.removeChild(this.list.tBodies[1]);
this.rows = new Array();
this.rowcount = 0;
if (sel) this.clear_selection();
},
/**
* 'remove' message row from list (just hide it)
*/
remove_row: function(uid, sel_next)
{
if (this.rows[uid].obj)
this.rows[uid].obj.style.display = 'none';
if (sel_next)
this.select_next();
this.rows[uid] = null;
this.rowcount--;
},
/**
* Add row to the list and initialize it
*/
insert_row: function(row, attop)
{
if (this.background)
var tbody = this.background;
else
var tbody = this.list.tBodies[0];
if (attop && tbody.rows.length)
tbody.insertBefore(row, tbody.firstChild);
else
tbody.appendChild(row);
this.init_row(row);
this.rowcount++;
},
/**
* Set focus to the list
*/
focus: function(e)
{
this.focused = true;
for (var n=0; n<this.selection.length; n++)
{
id = this.selection[n];
if (this.rows[id] && this.rows[id].obj) {
$(this.rows[id].obj).addClass('selected').removeClass('unfocused');
}
}
if (e || (e = window.event))
rcube_event.cancel(e);
},
/**
* remove focus from the list
*/
blur: function()
{
var id;
this.focused = false;
for (var n=0; n<this.selection.length; n++)
{
id = this.selection[n];
if (this.rows[id] && this.rows[id].obj) {
$(this.rows[id].obj).removeClass('selected').addClass('unfocused');
}
}
},
/**
* onmousedown-handler of message list row
*/
drag_row: function(e, id)
{
// don't do anything (another action processed before)
var evtarget = rcube_event.get_target(e);
if (this.dont_select || (evtarget && (evtarget.tagName == 'INPUT' || evtarget.tagName == 'IMG')))
return true;
// accept right-clicks
if (rcube_event.get_button(e) == 2)
return true;
this.in_selection_before = this.in_selection(id) ? id : false;
// selects currently unselected row
if (!this.in_selection_before)
{
var mod_key = rcube_event.get_modifier(e);
this.select_row(id, mod_key, false);
}
if (this.draggable && this.selection.length)
{
this.drag_start = true;
this.drag_mouse_start = rcube_event.get_mouse_pos(e);
rcube_event.add_listener({element:document, event:'mousemove', object:this, method:'drag_mouse_move'});
rcube_event.add_listener({element:document, event:'mouseup', object:this, method:'drag_mouse_up'});
// add listener for iframes
var iframes = document.getElementsByTagName('IFRAME');
this.iframe_events = Object();
for (var n in iframes)
{
var iframedoc = null;
if (iframes[n].contentDocument)
iframedoc = iframes[n].contentDocument;
else if (iframes[n].contentWindow)
iframedoc = iframes[n].contentWindow.document;
else if (iframes[n].document)
iframedoc = iframes[n].document;
if (iframedoc)
{
var list = this;
var pos = $('#'+iframes[n].id).offset();
this.iframe_events[n] = function(e) { e._offset = pos; return list.drag_mouse_move(e); }
if (iframedoc.addEventListener)
iframedoc.addEventListener('mousemove', this.iframe_events[n], false);
else if (iframes[n].attachEvent)
iframedoc.attachEvent('onmousemove', this.iframe_events[n]);
else
iframedoc['onmousemove'] = this.iframe_events[n];
rcube_event.add_listener({element:iframedoc, event:'mouseup', object:this, method:'drag_mouse_up'});
}
}
}
return false;
},
/**
* onmouseup-handler of message list row
*/
click_row: function(e, id)
{
var now = new Date().getTime();
var mod_key = rcube_event.get_modifier(e);
var evtarget = rcube_event.get_target(e);
if ((evtarget && (evtarget.tagName == 'INPUT' || evtarget.tagName == 'IMG')))
return true;
// don't do anything (another action processed before)
if (this.dont_select)
{
this.dont_select = false;
return false;
}
var dblclicked = now - this.rows[id].clicked < this.dblclick_time;
// unselects currently selected row
if (!this.drag_active && this.in_selection_before == id && !dblclicked)
this.select_row(id, mod_key, false);
this.drag_start = false;
this.in_selection_before = false;
// row was double clicked
if (this.rows && dblclicked && this.in_selection(id))
this.triggerEvent('dblclick');
else
this.triggerEvent('click');
if (!this.drag_active)
rcube_event.cancel(e);
this.rows[id].clicked = now;
return false;
},
/**
* get next/previous/last rows that are not hidden
*/
get_next_row: function()
{
if (!this.rows)
return false;
var last_selected_row = this.rows[this.last_selected];
var new_row = last_selected_row ? last_selected_row.obj.nextSibling : null;
while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
new_row = new_row.nextSibling;
return new_row;
},
get_prev_row: function()
{
if (!this.rows)
return false;
var last_selected_row = this.rows[this.last_selected];
var new_row = last_selected_row ? last_selected_row.obj.previousSibling : null;
while (new_row && (new_row.nodeType != 1 || new_row.style.display == 'none'))
new_row = new_row.previousSibling;
return new_row;
},
get_last_row: function()
{
if (this.rowcount)
{
var rows = this.list.tBodies[0].rows;
for(var i=rows.length-1; i>=0; i--)
if(rows[i].id && String(rows[i].id).match(/rcmrow([a-z0-9\-_=\+\/]+)/i) && this.rows[RegExp.$1] != null)
return RegExp.$1;
}
return null;
},
/**
* selects or unselects the proper row depending on the modifier key pressed
*/
select_row: function(id, mod_key, with_mouse)
{
var select_before = this.selection.join(',');
if (!this.multiselect)
mod_key = 0;
if (!this.shift_start)
this.shift_start = id
if (!mod_key)
{
this.shift_start = id;
this.highlight_row(id, false);
this.multi_selecting = false;
}
else
{
switch (mod_key)
{
case SHIFT_KEY:
this.shift_select(id, false);
break;
case CONTROL_KEY:
if (!with_mouse)
this.highlight_row(id, true);
break;
case CONTROL_SHIFT_KEY:
this.shift_select(id, true);
break;
default:
this.highlight_row(id, false);
break;
}
this.multi_selecting = true;
}
// trigger event if selection changed
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');
// 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
$(this.rows[id].obj).addClass('focused');
if (!this.selection.length)
this.shift_start = null;
this.last_selected = id;
},
/**
* Alias method for select_row
*/
select: function(id)
{
this.select_row(id, false);
this.scrollto(id);
},
/**
* Select row next to the last selected one.
* Either below or above.
*/
select_next: function()
{
var next_row = this.get_next_row();
var prev_row = this.get_prev_row();
var new_row = (next_row) ? next_row : prev_row;
if (new_row)
this.select_row(new_row.uid, false, false);
},
/**
* Perform selection when shift key is pressed
*/
shift_select: function(id, control)
{
if (!this.rows[this.shift_start] || !this.selection.length)
this.shift_start = id;
var from_rowIndex = this.rows[this.shift_start].obj.rowIndex;
var to_rowIndex = this.rows[id].obj.rowIndex;
var i = ((from_rowIndex < to_rowIndex)? from_rowIndex : to_rowIndex);
var j = ((from_rowIndex > to_rowIndex)? from_rowIndex : to_rowIndex);
// iterate through the entire message list
for (var n in this.rows)
{
if ((this.rows[n].obj.rowIndex >= i) && (this.rows[n].obj.rowIndex <= j))
{
if (!this.in_selection(n))
this.highlight_row(n, true);
}
else
{
if (this.in_selection(n) && !control)
this.highlight_row(n, true);
}
}
},
/**
* Check if given id is part of the current selection
*/
in_selection: function(id)
{
for(var n in this.selection)
if (this.selection[n]==id)
return true;
return false;
},
/**
* Select each row in list
*/
select_all: function(filter)
{
if (!this.rows || !this.rows.length)
return false;
// reset but remember selection first
var select_before = this.selection.join(',');
this.selection = new Array();
for (var n in this.rows)
{
if (!filter || (this.rows[n] && this.rows[n][filter] == true))
{
this.last_selected = n;
this.highlight_row(n, true);
}
else if (this.rows[n])
{
$(this.rows[n].obj).removeClass('selected').removeClass('unfocused');
}
}
// trigger event if selection changed
if (this.selection.join(',') != select_before)
this.triggerEvent('select');
this.focus();
return true;
},
/**
* Unselect selected row(s)
*/
clear_selection: function(id)
{
var num_select = this.selection.length;
// one row
if (id)
{
for (var n=0; n<this.selection.length; n++)
if (this.selection[n] == id) {
this.selection.splice(n,1);
break;
}
}
// all rows
else
{
for (var n=0; n<this.selection.length; n++)
if (this.rows[this.selection[n]]) {
$(this.rows[this.selection[n]].obj).removeClass('selected').removeClass('unfocused');
}
this.selection = new Array();
}
if (num_select && !this.selection.length)
this.triggerEvent('select');
},
/**
* Getter for the selection array
*/
get_selection: function()
{
return this.selection;
},
/**
* Return the ID if only one row is selected
*/
get_single_selection: function()
{
if (this.selection.length == 1)
return this.selection[0];
else
return null;
},
/**
* Highlight/unhighlight a row
*/
highlight_row: function(id, multiple)
{
if (this.rows[id] && !multiple)
{
if (this.selection.length > 1 || !this.in_selection(id))
{
this.clear_selection();
this.selection[0] = id;
$(this.rows[id].obj).addClass('selected');
}
}
else if (this.rows[id])
{
if (!this.in_selection(id)) // select row
{
this.selection[this.selection.length] = id;
$(this.rows[id].obj).addClass('selected');
}
else // unselect row
{
var p = find_in_array(id, this.selection);
var a_pre = this.selection.slice(0, p);
var 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');
}
}
},
/**
* Handler for keyboard events
*/
key_press: function(e)
{
if (this.focused != true)
return true;
var keyCode = rcube_event.get_keycode(e);
var mod_key = rcube_event.get_modifier(e);
switch (keyCode)
{
case 40:
case 38:
case 63233: // "down", in safari keypress
case 63232: // "up", in safari keypress
// Stop propagation so that the browser doesn't scroll
rcube_event.cancel(e);
return this.use_arrow_key(keyCode, mod_key);
default:
this.shiftkey = e.shiftKey;
this.key_pressed = keyCode;
this.triggerEvent('keypress');
if (this.key_pressed == this.BACKSPACE_KEY)
return rcube_event.cancel(e);
}
return true;
},
/**
* Handler for keydown events
*/
key_down: function(e)
{
switch (rcube_event.get_keycode(e))
{
case 27:
if (this.drag_active)
this.drag_mouse_up(e);
case 40:
case 38:
case 63233:
case 63232:
if (!rcube_event.get_modifier(e) && this.focused)
return rcube_event.cancel(e);
default:
}
return true;
},
/**
* Special handling method for arrow keys
*/
use_arrow_key: function(keyCode, mod_key)
{
var new_row;
// Safari uses the nonstandard keycodes 63232/63233 for up/down, if we're
// using the keypress event (but not the keydown or keyup event).
if (keyCode == 40 || keyCode == 63233) // down arrow key pressed
new_row = this.get_next_row();
else if (keyCode == 38 || keyCode == 63232) // up arrow key pressed
new_row = this.get_prev_row();
if (new_row)
{
this.select_row(new_row.uid, mod_key, true);
this.scrollto(new_row.uid);
}
return false;
},
/**
* Try to scroll the list to make the specified row visible
*/
scrollto: function(id)
{
var row = this.rows[id].obj;
if (row && this.frame)
{
var scroll_to = Number(row.offsetTop);
if (scroll_to < Number(this.frame.scrollTop))
this.frame.scrollTop = scroll_to;
else if (scroll_to + Number(row.offsetHeight) > Number(this.frame.scrollTop) + Number(this.frame.offsetHeight))
this.frame.scrollTop = (scroll_to + Number(row.offsetHeight)) - Number(this.frame.offsetHeight);
}
},
/**
* Handler for mouse move events
*/
drag_mouse_move: function(e)
{
if (this.drag_start)
{
// check mouse movement, of less than 3 pixels, don't start dragging
var m = rcube_event.get_mouse_pos(e);
if (!this.drag_mouse_start || (Math.abs(m.x - this.drag_mouse_start.x) < 3 && Math.abs(m.y - this.drag_mouse_start.y) < 3))
return false;
if (!this.draglayer)
this.draglayer = $('<div>').attr('id', 'rcmdraglayer').css({ position:'absolute', display:'none', 'z-index':2000 }).appendTo(document.body);
// get subjects of selectedd messages
var names = '';
var c, i, node, subject, obj;
for(var n=0; n<this.selection.length; n++)
{
if (n>12) // only show 12 lines
{
names += '...';
break;
}
if (this.rows[this.selection[n]].obj)
{
obj = this.rows[this.selection[n]].obj;
subject = '';
for(c=0, i=0; i<obj.childNodes.length; i++)
{
if (obj.childNodes[i].nodeName == 'TD')
{
if (((node = obj.childNodes[i].firstChild) && (node.nodeType==3 || node.nodeName=='A')) &&
(this.subject_col < 0 || (this.subject_col >= 0 && this.subject_col == c)))
{
if (n == 0) {
if (node.nodeType == 3)
this.drag_start_pos = $(obj.childNodes[i]).offset();
else
this.drag_start_pos = $(node).offset();
}
subject = node.nodeType==3 ? node.data : node.innerHTML;
// remove leading spaces
subject = subject.replace(/^\s+/i, '');
// truncate line to 50 characters
names += (subject.length > 50 ? subject.substring(0, 50)+'...' : subject) + '<br />';
break;
}
c++;
}
}
}
}
this.draglayer.html(names);
this.draglayer.show();
this.drag_active = true;
this.triggerEvent('dragstart');
}
if (this.drag_active && this.draglayer)
{
var pos = rcube_event.get_mouse_pos(e);
this.draglayer.css({ left:(pos.x+20)+'px', top:(pos.y-5 + (bw.ie ? document.documentElement.scrollTop : 0))+'px' });
this.triggerEvent('dragmove', e);
}
this.drag_start = false;
return false;
},
/**
* Handler for mouse up events
*/
drag_mouse_up: function(e)
{
document.onmousemove = null;
if (this.draglayer && this.draglayer.is(':visible')) {
if (this.drag_start_pos)
this.draglayer.animate(this.drag_start_pos, 300, 'swing').hide(20);
else
this.draglayer.hide();
}
this.drag_active = false;
this.triggerEvent('dragend');
rcube_event.remove_listener({element:document, event:'mousemove', object:this, method:'drag_mouse_move'});
rcube_event.remove_listener({element:document, event:'mouseup', object:this, method:'drag_mouse_up'});
var iframes = document.getElementsByTagName('IFRAME');
for (var n in iframes) {
var iframedoc;
if (iframes[n].contentDocument)
iframedoc = iframes[n].contentDocument;
else if (iframes[n].contentWindow)
iframedoc = iframes[n].contentWindow.document;
else if (iframes[n].document)
iframedoc = iframes[n].document;
if (iframedoc) {
if (this.iframe_events[n]) {
if (iframedoc.removeEventListener)
iframedoc.removeEventListener('mousemove', this.iframe_events[n], false);
else if (iframedoc.detachEvent)
iframedoc.detachEvent('onmousemove', this.iframe_events[n]);
else
iframedoc['onmousemove'] = null;
}
rcube_event.remove_listener({element:iframedoc, event:'mouseup', object:this, method:'drag_mouse_up'});
}
}
return rcube_event.cancel(e);
},
/**
* Creating the list in background
*/
set_background_mode: function(flag)
{
if (flag) {
this.background = document.createElement('TBODY');
} else if (this.background) {
this.list.replaceChild(this.background, this.list.tBodies[0]);
this.background = null;
}
}
};
rcube_list_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
rcube_list_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
rcube_list_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;