Merge pull request #1133 from hmhealey/plt718

PLT-718 Add an autocomplete when searching with in:, channel:, or from:

5 files changed, 344 insertions, 6 deletions

diff --git a/web/react/components/search_autocomplete.jsx b/web/react/components/search_autocomplete.jsx
new file mode 100644
index 000000000..03c7b894c
--- /dev/null
+++ b/web/react/components/search_autocomplete.jsx
@@ -0,0 +1,249 @@
+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+const ChannelStore = require('../stores/channel_store.jsx');
+const KeyCodes = require('../utils/constants.jsx').KeyCodes;
+const UserStore = require('../stores/user_store.jsx');
+const Utils = require('../utils/utils.jsx');
+
+const patterns = new Map([
+    ['channels', /\b(?:in|channel):\s*(\S*)$/i],
+    ['users', /\bfrom:\s*(\S*)$/i]
+]);
+
+export default class SearchAutocomplete extends React.Component {
+    constructor(props) {
+        super(props);
+
+        this.handleClick = this.handleClick.bind(this);
+        this.handleDocumentClick = this.handleDocumentClick.bind(this);
+        this.handleInputChange = this.handleInputChange.bind(this);
+        this.handleKeyDown = this.handleKeyDown.bind(this);
+
+        this.completeWord = this.completeWord.bind(this);
+        this.updateSuggestions = this.updateSuggestions.bind(this);
+
+        this.state = {
+            show: false,
+            mode: '',
+            filter: '',
+            selection: 0,
+            suggestions: new Map()
+        };
+    }
+
+    componentDidMount() {
+        $(document).on('click', this.handleDocumentClick);
+    }
+
+    componentWillUnmount() {
+        $(document).off('click', this.handleDocumentClick);
+    }
+
+    handleClick(value) {
+        this.completeWord(value);
+    }
+
+    handleDocumentClick(e) {
+        const container = $(ReactDOM.findDOMNode(this.refs.container));
+
+        if (!(container.is(e.target) || container.has(e.target).length > 0)) {
+            this.setState({
+                show: false
+            });
+        }
+    }
+
+    handleInputChange(textbox, text) {
+        const caret = Utils.getCaretPosition(textbox);
+        const preText = text.substring(0, caret);
+
+        let mode = '';
+        let filter = '';
+        for (const [modeForPattern, pattern] of patterns) {
+            const result = pattern.exec(preText);
+
+            if (result) {
+                mode = modeForPattern;
+                filter = result[1];
+                break;
+            }
+        }
+
+        if (mode !== this.state.mode || filter !== this.state.filter) {
+            this.updateSuggestions(mode, filter);
+        }
+
+        this.setState({
+            mode,
+            filter,
+            show: mode || filter
+        });
+    }
+
+    handleKeyDown(e) {
+        if (!this.state.show || this.state.suggestions.length === 0) {
+            return;
+        }
+
+        if (e.which === KeyCodes.UP || e.which === KeyCodes.DOWN) {
+            e.preventDefault();
+
+            let selection = this.state.selection;
+
+            if (e.which === KeyCodes.UP) {
+                selection -= 1;
+            } else {
+                selection += 1;
+            }
+
+            if (selection >= 0 && selection < this.state.suggestions.length) {
+                this.setState({
+                    selection
+                });
+            }
+        } else if (e.which === KeyCodes.ENTER || e.which === KeyCodes.SPACE) {
+            e.preventDefault();
+
+            this.completeSelectedWord();
+        }
+    }
+
+    completeSelectedWord() {
+        if (this.state.mode === 'channels') {
+            this.completeWord(this.state.suggestions[this.state.selection].name);
+        } else if (this.state.mode === 'users') {
+            this.completeWord(this.state.suggestions[this.state.selection].username);
+        }
+    }
+
+    completeWord(value) {
+        // add a space so that anything else typed doesn't interfere with the search flag
+        this.props.completeWord(this.state.filter, value + ' ');
+
+        this.setState({
+            show: false,
+            mode: '',
+            filter: '',
+            selection: 0
+        });
+    }
+
+    updateSuggestions(mode, filter) {
+        let suggestions = [];
+
+        if (mode === 'channels') {
+            let channels = ChannelStore.getAll();
+
+            if (filter) {
+                channels = channels.filter((channel) => channel.name.startsWith(filter));
+            }
+
+            channels.sort((a, b) => a.name.localeCompare(b.name));
+
+            suggestions = channels;
+        } else if (mode === 'users') {
+            let users = UserStore.getActiveOnlyProfileList();
+
+            if (filter) {
+                users = users.filter((user) => user.username.startsWith(filter));
+            }
+
+            users.sort((a, b) => a.username.localeCompare(b.username));
+
+            suggestions = users;
+        }
+
+        let selection = this.state.selection;
+
+        // keep the same user/channel selected if it's still visible as a suggestion
+        if (selection > 0 && this.state.suggestions.length > 0) {
+            // we can't just use indexOf to find if the selection is still in the list since they are different javascript objects
+            const currentSelectionId = this.state.suggestions[selection].id;
+            let found = false;
+
+            for (let i = 0; i < suggestions.length; i++) {
+                if (suggestions[i].id === currentSelectionId) {
+                    selection = i;
+                    found = true;
+
+                    break;
+                }
+            }
+
+            if (!found) {
+                selection = 0;
+            }
+        } else {
+            selection = 0;
+        }
+
+        this.setState({
+            suggestions,
+            selection
+        });
+    }
+
+    render() {
+        if (!this.state.show || this.state.suggestions.length === 0) {
+            return null;
+        }
+
+        let suggestions = [];
+
+        if (this.state.mode === 'channels') {
+            suggestions = this.state.suggestions.map((channel, index) => {
+                let className = 'search-autocomplete__channel';
+                if (this.state.selection === index) {
+                    className += ' selected';
+                }
+
+                return (
+                    <div
+                        key={channel.name}
+                        ref={channel.name}
+                        onClick={this.handleClick.bind(this, channel.name)}
+                        className={className}
+                    >
+                        {channel.name}
+                    </div>
+                );
+            });
+        } else if (this.state.mode === 'users') {
+            suggestions = this.state.suggestions.map((user, index) => {
+                let className = 'search-autocomplete__user';
+                if (this.state.selection === index) {
+                    className += ' selected';
+                }
+
+                return (
+                    <div
+                        key={user.username}
+                        ref={user.username}
+                        onClick={this.handleClick.bind(this, user.username)}
+                        className={className}
+                    >
+                        <img
+                            className='profile-img'
+                            src={'/api/v1/users/' + user.id + '/image?time=' + user.update_at}
+                        />
+                        {user.username}
+                    </div>
+                );
+            });
+        }
+
+        return (
+            <div
+                ref='container'
+                className='search-autocomplete'
+            >
+                {suggestions}
+            </div>
+        );
+    }
+}
+
+SearchAutocomplete.propTypes = {
+    completeWord: React.PropTypes.func.isRequired
+};
diff --git a/web/react/components/search_bar.jsx b/web/react/components/search_bar.jsx
index 7540b41a4..3932807d0 100644
--- a/web/react/components/search_bar.jsx
+++ b/web/react/components/search_bar.jsx
@@ -9,6 +9,7 @@ var utils = require('../utils/utils.jsx');
 var Constants = require('../utils/constants.jsx');
 var ActionTypes = Constants.ActionTypes;
 var Popover = ReactBootstrap.Popover;
+var SearchAutocomplete = require('./search_autocomplete.jsx');
 
 export default class SearchBar extends React.Component {
     constructor() {
@@ -16,11 +17,13 @@ export default class SearchBar extends React.Component {
         this.mounted = false;
 
         this.onListenerChange = this.onListenerChange.bind(this);
+        this.handleKeyDown = this.handleKeyDown.bind(this);
         this.handleUserInput = this.handleUserInput.bind(this);
         this.handleUserFocus = this.handleUserFocus.bind(this);
         this.handleUserBlur = this.handleUserBlur.bind(this);
         this.performSearch = this.performSearch.bind(this);
         this.handleSubmit = this.handleSubmit.bind(this);
+        this.completeWord = this.completeWord.bind(this);
 
         const state = this.getSearchTermStateFromStores();
         state.focused = false;
@@ -74,11 +77,18 @@ export default class SearchBar extends React.Component {
             results: null
         });
     }
+    handleKeyDown(e) {
+        if (this.refs.autocomplete) {
+            this.refs.autocomplete.handleKeyDown(e);
+        }
+    }
     handleUserInput(e) {
         var term = e.target.value;
         PostStore.storeSearchTerm(term);
         PostStore.emitSearchTermChange(false);
         this.setState({searchTerm: term});
+
+        this.refs.autocomplete.handleInputChange(e.target, term);
     }
     handleMouseInput(e) {
         e.preventDefault();
@@ -97,7 +107,7 @@ export default class SearchBar extends React.Component {
             this.setState({isSearching: true});
             client.search(
                 terms,
-                function success(data) {
+                (data) => {
                     this.setState({isSearching: false});
                     if (utils.isMobile()) {
                         ReactDOM.findDOMNode(this.refs.search).value = '';
@@ -108,11 +118,11 @@ export default class SearchBar extends React.Component {
                         results: data,
                         is_mention_search: isMentionSearch
                     });
-                }.bind(this),
-                function error(err) {
+                },
+                (err) => {
                     this.setState({isSearching: false});
                     AsyncClient.dispatchError(err, 'search');
-                }.bind(this)
+                }
             );
         }
     }
@@ -120,6 +130,24 @@ export default class SearchBar extends React.Component {
         e.preventDefault();
         this.performSearch(this.state.searchTerm.trim());
     }
+
+    completeWord(partialWord, word) {
+        const textbox = ReactDOM.findDOMNode(this.refs.search);
+        let text = textbox.value;
+
+        const caret = utils.getCaretPosition(textbox);
+        const preText = text.substring(0, caret - partialWord.length);
+        const postText = text.substring(caret);
+        text = preText + word + postText;
+
+        textbox.value = text;
+        utils.setCaretPosition(textbox, preText.length + word.length);
+
+        PostStore.storeSearchTerm(text);
+        PostStore.emitSearchTermChange(false);
+        this.setState({searchTerm: text});
+    }
+
     render() {
         var isSearching = null;
         if (this.state.isSearching) {
@@ -143,12 +171,13 @@ export default class SearchBar extends React.Component {
                     className='search__clear'
                     onClick={this.clearFocus}
                 >
-                    Cancel
+                    {'Cancel'}
                 </span>
                 <form
                     role='form'
                     className='search__form relative-div'
                     onSubmit={this.handleSubmit}
+                    style={{overflow: 'visible'}}
                 >
                     <span className='glyphicon glyphicon-search sidebar__search-icon' />
                     <input
@@ -160,9 +189,14 @@ export default class SearchBar extends React.Component {
                         onFocus={this.handleUserFocus}
                         onBlur={this.handleUserBlur}
                         onChange={this.handleUserInput}
+                        onKeyDown={this.handleKeyDown}
                         onMouseUp={this.handleMouseInput}
                     />
                     {isSearching}
+                    <SearchAutocomplete
+                        ref='autocomplete'
+                        completeWord={this.completeWord}
+                    />
                     <Popover
                         placement='bottom'
                         className={helpClass}
diff --git a/web/react/stores/user_store.jsx b/web/react/stores/user_store.jsx
index 575e6d51e..ce80c5ec9 100644
--- a/web/react/stores/user_store.jsx
+++ b/web/react/stores/user_store.jsx
@@ -48,6 +48,7 @@ class UserStoreClass extends EventEmitter {
         this.getProfilesUsernameMap = this.getProfilesUsernameMap.bind(this);
         this.getProfiles = this.getProfiles.bind(this);
         this.getActiveOnlyProfiles = this.getActiveOnlyProfiles.bind(this);
+        this.getActiveOnlyProfileList = this.getActiveOnlyProfileList.bind(this);
         this.saveProfile = this.saveProfile.bind(this);
         this.setSessions = this.setSessions.bind(this);
         this.getSessions = this.getSessions.bind(this);
@@ -215,6 +216,19 @@ class UserStoreClass extends EventEmitter {
         return active;
     }
 
+    getActiveOnlyProfileList() {
+        const profileMap = this.getActiveOnlyProfiles();
+        const profiles = [];
+
+        for (const id in profileMap) {
+            if (profileMap.hasOwnProperty(id)) {
+                profiles.push(profileMap[id]);
+            }
+        }
+
+        return profiles;
+    }
+
     saveProfile(profile) {
         var ps = this.getProfiles();
         ps[profile.id] = profile;
diff --git a/web/react/utils/constants.jsx b/web/react/utils/constants.jsx
index 7d2626fc1..72773bf05 100644
--- a/web/react/utils/constants.jsx
+++ b/web/react/utils/constants.jsx
@@ -311,6 +311,7 @@ module.exports = {
         RIGHT: 39,
         BACKSPACE: 8,
         ENTER: 13,
-        ESCAPE: 27
+        ESCAPE: 27,
+        SPACE: 32
     }
 };
diff --git a/web/sass-files/sass/partials/_search.scss b/web/sass-files/sass/partials/_search.scss
index 2f15a445f..ce3563885 100644
--- a/web/sass-files/sass/partials/_search.scss
+++ b/web/sass-files/sass/partials/_search.scss
@@ -109,3 +109,43 @@
 .search-highlight {
 	background-color: #FFF2BB;
 }
+
+.search-autocomplete {
+    background-color: #fff;
+    border: $border-gray;
+    line-height: 36px;
+    overflow-x: hidden;
+    overflow-y: scroll;
+    position: absolute;
+    text-align: left;
+    width: 100%;
+    z-index: 100;
+    @extend %popover-box-shadow;
+}
+
+.search-autocomplete__channel {
+    cursor: pointer;
+    height: 36px;
+    padding: 0px 6px;
+
+    &.selected {
+        background-color:rgba(51, 51, 51, 0.15);
+    }
+}
+
+.search-autocomplete__user {
+    cursor: pointer;
+    height: 36px;
+    padding: 0px;
+
+    .profile-img {
+        height: 32px;
+        margin-right: 6px;
+        width: 32px;
+        @include border-radius(16px);
+    }
+
+    &.selected {
+        background-color:rgba(51, 51, 51, 0.15);
+    }
+}