File organisation sanity: put directives and filters into dedicated files

webclient/room/room-directive.js

@@ -0,0 +1,134 @@
+/*
+ Copyright 2014 matrix.org
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+'use strict';
+
+angular.module('RoomController')
+.directive('autoComplete', ['$timeout', function ($timeout) {
+    return function (scope, element, attrs) {
+        element.bind("keydown keypress", function (event) {
+            // console.log("event: " + event.which);
+            if (event.which === 9) {
+                if (!scope.autoCompleting) { // cache our starting text
+                    // console.log("caching " + element[0].value);
+                    scope.autoCompleteOriginal = element[0].value;
+                    scope.autoCompleting = true;
+                }
+                
+                if (event.shiftKey) {
+                    scope.autoCompleteIndex--;
+                    if (scope.autoCompleteIndex < 0) {
+                        scope.autoCompleteIndex = 0;
+                    }
+                }
+                else {
+                    scope.autoCompleteIndex++;
+                }
+                
+                var searchIndex = 0;
+                var targetIndex = scope.autoCompleteIndex;
+                var text = scope.autoCompleteOriginal;
+                
+                // console.log("targetIndex: " + targetIndex + ", text=" + text);
+                                    
+                // FIXME: use the correct regexp to recognise userIDs
+                var search = /@?([a-zA-Z0-9_\-:\.]+)$/.exec(text);
+                if (targetIndex === 0) {
+                    element[0].value = text;
+                }
+                else if (search && search[1]) {
+                    // console.log("search found: " + search);
+                    var expansion;
+                    
+                    // FIXME: could do better than linear search here
+                    angular.forEach(scope.members, function(item, name) {
+                        if (item.displayname && searchIndex < targetIndex) {
+                            if (item.displayname.toLowerCase().indexOf(search[1].toLowerCase()) === 0) {
+                                expansion = item.displayname;
+                                searchIndex++;
+                            }
+                        }
+                    });
+                    if (searchIndex < targetIndex) { // then search raw mxids
+                        angular.forEach(scope.members, function(item, name) {
+                            if (searchIndex < targetIndex) {
+                                if (name.toLowerCase().indexOf(search[1].toLowerCase()) === 1) {
+                                    expansion = name;
+                                    searchIndex++;
+                                }
+                            }
+                        });
+                    }
+                    
+                    if (searchIndex === targetIndex) {
+                        // xchat-style tab complete
+                        if (search[0].length === text.length)
+                            expansion += " : ";
+                        else
+                            expansion += " ";
+                        element[0].value = text.replace(/@?([a-zA-Z0-9_\-:\.]+)$/, expansion);
+                        // cancel blink
+                        element[0].className = "";                        
+                    }
+                    else {
+                        // console.log("wrapped!");
+                        element[0].className = "blink"; // XXX: slightly naughty to bypass angular
+                        $timeout(function() {
+                             element[0].className = "";
+                        }, 150);
+                        element[0].value = text;
+                        scope.autoCompleteIndex = 0;
+                    }
+                }
+                else {
+                    scope.autoCompleteIndex = 0;
+                }
+                event.preventDefault();
+            }
+            else if (event.which !== 16 && scope.autoCompleting) {
+                scope.autoCompleting = false;
+                scope.autoCompleteIndex = 0;
+            }
+        });
+    };
+}])
+
+// A directive to anchor the scroller position at the bottom when the browser is resizing.
+// When the screen resizes, the bottom of the element remains the same, not the top.
+.directive('keepScroll', ['$window', function($window) {
+    return {
+        link: function(scope, elem, attrs) {
+
+            scope.windowHeight = $window.innerHeight;
+
+            // Listen to window size change
+            angular.element($window).bind('resize', function() {
+
+                // If the scroller is scrolled to the bottom, there is nothing to do.
+                // The browser will move it as expected
+                if (elem.scrollTop() + elem.height() !== elem[0].scrollHeight) {
+                    // Else, move the scroller position according to the window height change delta
+                    var windowHeightDelta = $window.innerHeight - scope.windowHeight;
+                    elem.scrollTop(elem.scrollTop() - windowHeightDelta);
+                }
+
+                // Store the new window height for the next screen size change
+                scope.windowHeight = $window.innerHeight;
+            });
+        }
+    };
+}]);
+