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9fb5487473
If we have removed a stream from the home view, and our pointer that we load from the server refers to a message that is no longer visible, we don't want to error out but rather select the nearest message to our previously selected one. (imported from commit d212f1fba7b06836d1d916b43042991625b6f41e)
109 lines
3.1 KiB
JavaScript
109 lines
3.1 KiB
JavaScript
/*jslint nomen: true */
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function MessageList(table_name) {
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this._items = [];
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this._hash = {};
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this.table_name = table_name;
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this._selected_id = -1;
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return this;
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}
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MessageList.prototype = {
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get: function MessageList_get(id) {
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id = parseInt(id, 10);
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if (isNaN(id)) {
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return undefined;
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}
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return this._hash[id];
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},
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empty: function MessageList_empty() {
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return this._items.length === 0;
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},
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first: function MessageList_first() {
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return this._items[0];
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},
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last: function MessageList_last() {
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return this._items[this._items.length - 1];
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},
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selected_id: function MessageList_selected_id() {
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return this._selected_id;
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},
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select_id: function MessageList_select_id(id, opts) {
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opts = $.extend({then_scroll: false, use_closest: false}, opts, {id: id, msg_list: this});
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id = parseInt(id, 10);
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if (isNaN(id)) {
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throw (new Error("Bad message id"));
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}
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if (this.get(id) === undefined) {
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if (!opts.use_closest) {
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throw (new Error("Selected message id not in MessageList"));
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} else {
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id = this.closest_id(id);
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opts.id = id;
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}
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}
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this._selected_id = id;
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$(document).trigger($.Event('message_selected.zephyr', opts));
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},
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selected_message: function MessageList_selected_message() {
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return this.get(this._selected_id);
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},
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selected_row: function MessageList_selected_row() {
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return rows.get(this._selected_id, this.table_name);
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},
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closest_id: function MessageList_closest_id(id) {
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if (this._items.length === 0) {
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return -1;
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}
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var closest = util.lower_bound(this._items, id,
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function (a, b) {
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return a.id < b;
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});
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if (closest === this._items.length
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|| (closest !== 0
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&& (id - this._items[closest - 1].id <
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this._items[closest].id - id)))
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{
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closest = closest - 1;
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}
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return this._items[closest].id;
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},
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_add_to_hash: function MessageList__add_to_hash(messages) {
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var self = this;
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messages.forEach(function (elem) {
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var id = parseInt(elem.id, 10);
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if (isNaN(id)) {
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throw (new Error("Bad message id"));
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}
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if (self._hash[id] !== undefined) {
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throw (new Error("Duplicate message added to MessageList"));
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}
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self._hash[id] = elem;
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});
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},
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append: function MessageList_append(messages) {
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this._items = this._items.concat(messages);
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this._add_to_hash(messages);
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},
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prepend: function MessageList_prepend(messages) {
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this._items = messages.concat(this._items);
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this._add_to_hash(messages);
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},
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all: function MessageList_all() {
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return this._items;
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}
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};
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/*jslint nomen: false */
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