--- /dev/null
+/*
+ +-----------------------------------------------------------------------+
+ | RoundCube List Widget |
+ | |
+ | This file is part of the RoundCube Webmail client |
+ | Copyright (C) 2006, RoundCube Dev, - Switzerland |
+ | Licensed under the GNU GPL |
+ | |
+ +-----------------------------------------------------------------------+
+ | Authors: Thomas Bruederli <roundcube@gmail.com> |
+ | Charles McNulty <charles@charlesmcnulty.com> |
+ +-----------------------------------------------------------------------+
+ | Requires: common.js |
+ +-----------------------------------------------------------------------+
+
+ $Id: list.js 344 2006-09-18 03:49:28Z thomasb $
+*/
+
+
+/**
+ * RoundCube List Widget class
+ * @contructor
+ */
+function rcube_list_widget(list, p)
+ {
+ // static contants
+ this.ENTER_KEY = 13;
+ this.DELETE_KEY = 46;
+
+ this.list = list ? list : null;
+ this.frame = null;
+ this.rows = [];
+ this.selection = [];
+
+ this.shiftkey = false;
+
+ this.multiselect = false;
+ this.draggable = false;
+ this.keyboard = false;
+
+ this.dont_select = false;
+ this.drag_active = false;
+ this.last_selected = 0;
+ this.in_selection_before = false;
+ this.focused = false;
+ this.drag_mouse_start = null;
+ this.dblclick_time = 600;
+ this.row_init = function(){};
+ this.events = { click:[], dblclick:[], select:[], keypress:[], dragstart:[], dragend:[] };
+
+ // 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();
+
+ 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.frame = this.list.parentNode;
+
+ // set body events
+ if (this.keyboard)
+ rcube_event.add_listener({element:document, event:'keydown', object:this, method:'key_press'});
+ }
+},
+
+
+/**
+ *
+ */
+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]);
+ }
+},
+
+
+/**
+ *
+ */
+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();
+
+ if (sel) this.clear_selection();
+},
+
+
+/**
+ * 'remove' message row from list (just hide it)
+ */
+remove_row: function(uid)
+{
+ if (this.rows[uid].obj)
+ this.rows[uid].obj.style.display = 'none';
+
+ this.rows[uid] = null;
+},
+
+
+/**
+ *
+ */
+insert_row: function(row, attop)
+{
+ var tbody = this.list.tBodies[0];
+
+ if (attop && tbody.rows.length)
+ tbody.insertBefore(row, tbody.firstChild);
+ else
+ tbody.appendChild(row);
+
+ this.init_row(row);
+},
+
+
+
+/**
+ * Set focur 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].obj)
+ {
+ this.set_classname(this.rows[id].obj, 'selected', true);
+ this.set_classname(this.rows[id].obj, 'unfocused', false);
+ }
+ }
+
+ 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.set_classname(this.rows[id].obj, 'selected', false);
+ this.set_classname(this.rows[id].obj, 'unfocused', true);
+ }
+ }
+},
+
+
+/**
+ * onmousedown-handler of message list row
+ */
+drag_row: function(e, id)
+{
+ this.in_selection_before = this.in_selection(id) ? id : false;
+
+ // don't do anything (another action processed before)
+ if (this.dont_select)
+ return 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'});
+ }
+
+ 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);
+
+ // 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.trigger_event('dblclick');
+ else
+ this.trigger_event('click');
+
+ if (!this.drag_active)
+ rcube_event.cancel(e);
+
+ this.rows[id].clicked = now;
+ return false;
+},
+
+
+/**
+ * get next and previous 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;
+},
+
+
+// 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 (!mod_key)
+ {
+ this.shift_start = id;
+ this.highlight_row(id, false);
+ }
+ else
+ {
+ switch (mod_key)
+ {
+ case SHIFT_KEY:
+ this.shift_select(id, false);
+ break;
+
+ case CONTROL_KEY:
+ this.shift_start = id;
+ 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;
+ }
+ }
+
+ // trigger event if selection changed
+ if (this.selection.join(',') != select_before)
+ this.trigger_event('select');
+
+ if (this.last_selected != 0 && this.rows[this.last_selected])
+ this.set_classname(this.rows[this.last_selected].obj, 'focused', false);
+
+ this.last_selected = id;
+ this.set_classname(this.rows[id].obj, 'focused', true);
+},
+
+
+/**
+ * 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)
+{
+ 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 selection first
+ this.clear_selection();
+
+ for (var n in this.rows)
+ {
+ if (!filter || this.rows[n][filter]==true)
+ {
+ this.last_selected = n;
+ this.highlight_row(n, true);
+ }
+ }
+
+ return true;
+},
+
+
+/**
+ * Unselect all selected rows
+ */
+clear_selection: function()
+{
+ for(var n=0; n<this.selection.length; n++)
+ if (this.rows[this.selection[n]])
+ {
+ this.set_classname(this.rows[this.selection[n]].obj, 'selected', false);
+ this.set_classname(this.rows[this.selection[n]].obj, 'unfocused', false);
+ }
+
+ this.selection = new Array();
+},
+
+
+/**
+ * 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)
+ {
+ this.clear_selection();
+ this.selection[0] = id;
+ this.set_classname(this.rows[id].obj, 'selected', true)
+ }
+ else if (this.rows[id])
+ {
+ if (!this.in_selection(id)) // select row
+ {
+ this.selection[this.selection.length] = id;
+ this.set_classname(this.rows[id].obj, 'selected', true);
+ }
+ 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.set_classname(this.rows[id].obj, 'selected', false);
+ this.set_classname(this.rows[id].obj, 'unfocused', false);
+ }
+ }
+},
+
+
+/**
+ * Handler for keyboard events
+ */
+key_press: function(e)
+{
+ if (this.focused != true)
+ return true;
+
+ this.shiftkey = e.shiftKey;
+
+ var keyCode = document.layers ? e.which : document.all ? event.keyCode : document.getElementById ? e.keyCode : 0;
+ var mod_key = rcube_event.get_modifier(e);
+ switch (keyCode)
+ {
+ case 40:
+ case 38:
+ return this.use_arrow_key(keyCode, mod_key);
+ break;
+
+ default:
+ this.key_pressed = keyCode;
+ this.trigger_event('keypress');
+ }
+
+ return true;
+},
+
+
+/**
+ * Special handling method for arrow keys
+ */
+use_arrow_key: function(keyCode, mod_key)
+{
+ var new_row;
+ if (keyCode == 40) // down arrow key pressed
+ new_row = this.get_next_row();
+ else if (keyCode == 38) // 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 = new rcube_layer('rcmdraglayer', {x:0, y:0, width:300, vis:0, zindex:2000});
+
+ // get subjects of selectedd messages
+ var names = '';
+ var c, 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; c<obj.childNodes.length; c++)
+ if (obj.childNodes[c].nodeName=='TD' && (node = obj.childNodes[c].firstChild) && (node.nodeType==3 || node.nodeName=='A'))
+ {
+ subject = node.nodeType==3 ? node.data : node.innerHTML;
+ names += (subject.length > 50 ? subject.substring(0, 50)+'...' : subject) + '<br />';
+ break;
+ }
+ }
+ }
+
+ this.draglayer.write(names);
+ this.draglayer.show(1);
+
+ this.drag_active = true;
+ this.trigger_event('dragstart');
+ }
+
+ if (this.drag_active && this.draglayer)
+ {
+ var pos = rcube_event.get_mouse_pos(e);
+ this.draglayer.move(pos.x+20, pos.y-5);
+ }
+
+ this.drag_start = false;
+
+ return false;
+},
+
+
+/**
+ * Handler for mouse up events
+ */
+drag_mouse_up: function(e)
+{
+ document.onmousemove = null;
+
+ if (this.draglayer && this.draglayer.visible)
+ this.draglayer.show(0);
+
+ this.drag_active = false;
+ this.trigger_event('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'});
+
+ return rcube_event.cancel(e);
+},
+
+
+
+/**
+ * set/unset a specific class name
+ */
+set_classname: function(obj, classname, set)
+{
+ var reg = new RegExp('\s*'+classname, 'i');
+ if (!set && obj.className.match(reg))
+ obj.className = obj.className.replace(reg, '');
+ else if (set && !obj.className.match(reg))
+ obj.className += ' '+classname;
+},
+
+
+/**
+ * Setter for object event handlers
+ *
+ * @param {String} Event name
+ * @param {Function} Handler function
+ * @return Listener ID (used to remove this handler later on)
+ */
+addEventListener: function(evt, handler)
+{
+ if (this.events[evt]) {
+ var handle = this.events[evt].length;
+ this.events[evt][handle] = handler;
+ return handle;
+ }
+ else
+ return false;
+},
+
+
+/**
+ * Removes a specific event listener
+ *
+ * @param {String} Event name
+ * @param {Int} Listener ID to remove
+ */
+removeEventListener: function(evt, handle)
+{
+ if (this.events[evt] && this.events[evt][handle])
+ this.events[evt][handle] = null;
+},
+
+
+/**
+ * This will execute all registered event handlers
+ * @private
+ */
+trigger_event: function(evt)
+{
+ if (this.events[evt] && this.events[evt].length) {
+ for (var i=0; i<this.events[evt].length; i++)
+ if (typeof(this.events[evt][i]) == 'function')
+ this.events[evt][i](this);
+ }
+}
+
+
+};
+
projects / roundcube.git / blobdiff