420 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			JavaScript
		
	
	
			
		
		
	
	
			420 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			JavaScript
		
	
	
/*
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Copyright 2014 matrix.org
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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    http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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angular.module('RoomController', ['ngSanitize', 'mUtilities'])
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.controller('RoomController', ['$scope', '$http', '$timeout', '$routeParams', '$location', 'matrixService', 'eventStreamService', 'eventHandlerService', 'mFileUpload', 'mUtilities',
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                               function($scope, $http, $timeout, $routeParams, $location, matrixService, eventStreamService, eventHandlerService, mFileUpload, mUtilities) {
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   'use strict';
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    var MESSAGES_PER_PAGINATION = 30;
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    var THUMBNAIL_SIZE = 320;
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    // Room ids. Computed and resolved in onInit
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    $scope.room_id = undefined;
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    $scope.room_alias = undefined;
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    $scope.state = {
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        user_id: matrixService.config().user_id,
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        events_from: "END", // when to start the event stream from.
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        earliest_token: "END", // stores how far back we've paginated.
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        first_pagination: true, // this is toggled off when the first pagination is done
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        can_paginate: true, // this is toggled off when we run out of items
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        paginating: false, // used to avoid concurrent pagination requests pulling in dup contents
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        stream_failure: undefined, // the response when the stream fails
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        sending: false // true when a message is being sent. It helps to disable the UI when a process is running
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    };
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    $scope.members = {};
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    $scope.autoCompleting = false;
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    $scope.autoCompleteIndex = 0;    
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    $scope.autoCompleteOriginal = "";
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    $scope.imageURLToSend = "";
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    $scope.userIDToInvite = "";
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    var scrollToBottom = function() {
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        console.log("Scrolling to bottom");
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        $timeout(function() {
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            var objDiv = document.getElementById("messageTableWrapper");
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            objDiv.scrollTop = objDiv.scrollHeight;
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        }, 0);
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    };
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    $scope.$on(eventHandlerService.MSG_EVENT, function(ngEvent, event, isLive) {
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        if (isLive && event.room_id === $scope.room_id) {
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            scrollToBottom();
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            if (window.Notification) {
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                // FIXME: we should also notify based on a timer or other heuristics
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                // rather than the window being minimised
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                if (document.hidden) {
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                    var notification = new window.Notification(
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                        ($scope.members[event.user_id].displayname || event.user_id) +
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                        " (" + ($scope.room_alias || $scope.room_id) + ")", // FIXME: don't leak room_ids here
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                    {
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                        "body": event.content.body,
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                        "icon": $scope.members[event.user_id].avatar_url,
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                    });
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                    $timeout(function() {
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                        notification.close();
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                    }, 5 * 1000);
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                }
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            }
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        }
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    });
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    $scope.$on(eventHandlerService.MEMBER_EVENT, function(ngEvent, event, isLive) {
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        updateMemberList(event);
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    });
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    $scope.$on(eventHandlerService.PRESENCE_EVENT, function(ngEvent, event, isLive) {
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        updatePresence(event);
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    });
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    $scope.paginateMore = function() {
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        if ($scope.state.can_paginate) {
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            // console.log("Paginating more.");
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            paginate(MESSAGES_PER_PAGINATION);
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        }
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    };
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    var paginate = function(numItems) {
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        // console.log("paginate " + numItems);
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        if ($scope.state.paginating || !$scope.room_id) {
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            return;
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        }
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        else {
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            $scope.state.paginating = true;
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        }
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        // console.log("paginateBackMessages from " + $scope.state.earliest_token + " for " + numItems);
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        var originalTopRow = $("#messageTable>tbody>tr:first")[0];
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        matrixService.paginateBackMessages($scope.room_id, $scope.state.earliest_token, numItems).then(
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            function(response) {
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                eventHandlerService.handleEvents(response.data.chunk, false);
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                $scope.state.earliest_token = response.data.end;
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                if (response.data.chunk.length < MESSAGES_PER_PAGINATION) {
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                    // no more messages to paginate. this currently never gets turned true again, as we never
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                    // expire paginated contents in the current implementation.
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                    $scope.state.can_paginate = false;
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                }
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                $scope.state.paginating = false;
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                var wrapper = $("#messageTableWrapper")[0];
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                var table = $("#messageTable")[0];
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                // console.log("wrapper height=" + wrapper.clientHeight + ", table scrollHeight=" + table.scrollHeight);
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                if ($scope.state.can_paginate) {
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                    // check we don't have to pull in more messages
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                    // n.b. we dispatch through a timeout() to allow the digest to run otherwise the .height methods are stale
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                    $timeout(function() {
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                        if (table.scrollHeight < wrapper.clientHeight) {
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                            paginate(MESSAGES_PER_PAGINATION);
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                            scrollToBottom();                            
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                        }
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                    }, 0);
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                }
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                if ($scope.state.first_pagination) {
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                    scrollToBottom();
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                    $scope.state.first_pagination = false;
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                }
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                else {
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                    // lock the scroll position
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                    $timeout(function() {
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                        // FIXME: this risks a flicker before the scrollTop is actually updated, but we have to
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                        // dispatch it into a function in order to first update the layout.  The right solution
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                        // might be to implement it as a directive, more like
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                        // http://stackoverflow.com/questions/23736647/how-to-retain-scroll-position-of-ng-repeat-in-angularjs
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                        // however, this specific solution breaks because it measures the rows height before
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                        // the contents are interpolated.
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                        wrapper.scrollTop = originalTopRow ? (originalTopRow.offsetTop + wrapper.scrollTop) : 0;
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                    }, 0);
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                }
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            },
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            function(error) {
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                console.log("Failed to paginateBackMessages: " + JSON.stringify(error));
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                $scope.state.paginating = false;
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            }
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        );
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    };
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    var updateMemberList = function(chunk) {
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        var isNewMember = !(chunk.target_user_id in $scope.members);
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        if (isNewMember) {
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            // FIXME: why are we copying these fields around inside chunk?
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            if ("state" in chunk.content) {
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                chunk.presenceState = chunk.content.state; // why is this renamed?
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            }
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            if ("mtime_age" in chunk.content) {
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                chunk.mtime_age = chunk.content.mtime_age;
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            }
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            // Once the HS reliably returns the displaynames & avatar_urls for both
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            // local and remote users, we should use this rather than the evalAsync block
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            // below
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            if ("displayname" in chunk.content) {
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                chunk.displayname = chunk.content.displayname;
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            }
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            if ("avatar_url" in chunk.content) {
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                chunk.avatar_url = chunk.content.avatar_url;
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            }
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            $scope.members[chunk.target_user_id] = chunk;
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/*
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            // Stale code for explicitly hammering the homeserver for every displayname & avatar_url
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            // get their display name and profile picture and set it to their
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            // member entry in $scope.members. We HAVE to use $timeout with 0 delay 
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            // to make this function run AFTER the current digest cycle, else the 
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            // response may update a STALE VERSION of the member list (manifesting
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            // as no member names appearing, or appearing sporadically).
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            $scope.$evalAsync(function() {
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                matrixService.getDisplayName(chunk.target_user_id).then(
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                    function(response) {
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                        var member = $scope.members[chunk.target_user_id];
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                        if (member !== undefined) {
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                            member.displayname = response.data.displayname;
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                        }
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                    }
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                ); 
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                matrixService.getProfilePictureUrl(chunk.target_user_id).then(
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                    function(response) {
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                         var member = $scope.members[chunk.target_user_id];
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                         if (member !== undefined) {
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                            member.avatar_url = response.data.avatar_url;
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                         }
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                    }
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                );
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            });
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*/            
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        }
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        else {
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            // selectively update membership else it will nuke the picture and displayname too :/
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            var member = $scope.members[chunk.target_user_id];
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            member.content.membership = chunk.content.membership;
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        }
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    }
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    var updatePresence = function(chunk) {
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        if (!(chunk.content.user_id in $scope.members)) {
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            console.log("updatePresence: Unknown member for chunk " + JSON.stringify(chunk));
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            return;
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        }
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        var member = $scope.members[chunk.content.user_id];
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        // XXX: why not just pass the chunk straight through?
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        if ("state" in chunk.content) {
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            member.presenceState = chunk.content.state;
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        }
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        if ("mtime_age" in chunk.content) {
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            // FIXME: should probably keep updating mtime_age in realtime like FB does
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            member.mtime_age = chunk.content.mtime_age;
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        }
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        // this may also contain a new display name or avatar url, so check.
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        if ("displayname" in chunk.content) {
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            member.displayname = chunk.content.displayname;
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        }
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        if ("avatar_url" in chunk.content) {
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            member.avatar_url = chunk.content.avatar_url;
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        }
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    }
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    $scope.send = function() {
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        if ($scope.textInput == "") {
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            return;
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        }
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        $scope.state.sending = true;
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        // Send the text message
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        var promise;
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        // FIXME: handle other commands too
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        if ($scope.textInput.indexOf("/me") == 0) {
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            promise = matrixService.sendEmoteMessage($scope.room_id, $scope.textInput.substr(4));
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        }
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        else {
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            promise = matrixService.sendTextMessage($scope.room_id, $scope.textInput);
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        }
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        promise.then(
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            function() {
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                console.log("Sent message");
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                $scope.textInput = "";
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                $scope.state.sending = false;
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            },
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            function(error) {
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                $scope.feedback = "Failed to send: " + error.data.error;
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                $scope.state.sending = false;
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            });
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    };
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    $scope.onInit = function() {
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        // $timeout(function() { document.getElementById('textInput').focus() }, 0);
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        console.log("onInit");
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        // Does the room ID provided in the URL?
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        var room_id_or_alias;
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        if ($routeParams.room_id_or_alias) {
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            room_id_or_alias = decodeURIComponent($routeParams.room_id_or_alias);
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        }
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        if (room_id_or_alias && '!' === room_id_or_alias[0]) {
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            // Yes. We can start right now
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            $scope.room_id = room_id_or_alias;
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            $scope.room_alias = matrixService.getRoomIdToAliasMapping($scope.room_id);
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            onInit2();
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        }
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        else {
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            // No. The URL contains the room alias. Get this alias.
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            if (room_id_or_alias) {
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                // The room alias was passed urlencoded, use it as is
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                $scope.room_alias = room_id_or_alias;
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            }
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            else  {
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                // Else get the room alias by hand from the URL
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                // ie: extract #public:localhost:8080 from http://127.0.0.1:8000/#/room/#public:localhost:8080
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                if (3 === location.hash.split("#").length) {
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                    $scope.room_alias = "#" + location.hash.split("#")[2];
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                }
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                else {
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                    // In case of issue, go to the default page
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                    console.log("Error: cannot extract room alias");
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                    $location.path("/");
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                    return;
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                }
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            }
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            // Need a room ID required in Matrix API requests
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            console.log("Resolving alias: " + $scope.room_alias);
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            matrixService.resolveRoomAlias($scope.room_alias).then(function(response) {
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                $scope.room_id = response.data.room_id;
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                console.log("   -> Room ID: " + $scope.room_id);
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                // Now, we can start
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                onInit2();
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            },
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            function () {
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                // In case of issue, go to the default page
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                console.log("Error: cannot resolve room alias");
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                $location.path("/");
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            });
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        }
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    };
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    var onInit2 = function() {
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        // Join the room
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        matrixService.join($scope.room_id).then(
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            function() {
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                console.log("Joined room "+$scope.room_id);
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                // Get the current member list
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                matrixService.getMemberList($scope.room_id).then(
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                    function(response) {
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                        for (var i = 0; i < response.data.chunk.length; i++) {
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                            var chunk = response.data.chunk[i];
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                            updateMemberList(chunk);
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                        }
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                        eventStreamService.resume();
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                    },
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                    function(error) {
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                        $scope.feedback = "Failed get member list: " + error.data.error;
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                    }
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                );
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                paginate(MESSAGES_PER_PAGINATION);
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            },
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            function(reason) {
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                $scope.feedback = "Can't join room: " + reason;
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            });
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    }; 
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    $scope.inviteUser = function(user_id) {
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        matrixService.invite($scope.room_id, user_id).then(
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            function() {
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                console.log("Invited.");
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                $scope.feedback = "Request for invitation succeeds";
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            },
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            function(reason) {
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                $scope.feedback = "Failure: " + reason;
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            });
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    };
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    // Open the user profile page
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    $scope.goToUserPage = function(user_id) {
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        $location.url("/user/" + user_id);
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    };
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    $scope.leaveRoom = function() {
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        matrixService.leave($scope.room_id).then(
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            function(response) {
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                console.log("Left room ");
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                $location.path("rooms");
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            },
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            function(error) {
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                $scope.feedback = "Failed to leave room: " + error.data.error;
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            });
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    };
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    $scope.sendImage = function(url, body) {
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        $scope.state.sending = true;
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        matrixService.sendImageMessage($scope.room_id, url, body).then(
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            function() {
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                console.log("Image sent");
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                $scope.state.sending = false;
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            },
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            function(error) {
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                $scope.feedback = "Failed to send image: " + error.data.error;
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                $scope.state.sending = false;
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            });
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    };
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    $scope.imageFileToSend;
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    $scope.$watch("imageFileToSend", function(newValue, oldValue) {
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        if ($scope.imageFileToSend) {
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            $scope.state.sending = true;
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            // Upload this image with its thumbnail to Internet
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            mFileUpload.uploadImageAndThumbnail($scope.imageFileToSend, THUMBNAIL_SIZE).then(
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                function(imageMessage) {
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                    // imageMessage is complete message structure, send it as is
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                    matrixService.sendMessage($scope.room_id, undefined, imageMessage).then(
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                        function() {
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                            console.log("Image message sent");
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                            $scope.state.sending = false;
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                        },
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                        function(error) {
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                            $scope.feedback = "Failed to send image message: " + error.data.error;
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                            $scope.state.sending = false;
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                        });
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                },
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                function(error) {
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                    $scope.feedback = "Can't upload image";
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                    $scope.state.sending = false;
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                }
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            );
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        }
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    });
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    $scope.loadMoreHistory = function() {
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        paginate(MESSAGES_PER_PAGINATION);
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    };
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}]);
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