DevTools: Move CodeMirrorTextEditor into text_editor module

third_party/WebKit/Source/devtools/front_end/source_frame/TextEditorAutocompleteController.js

-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @constructor
- * @implements {WebInspector.SuggestBoxDelegate}
- * @param {!WebInspector.CodeMirrorTextEditor} textEditor
- * @param {!CodeMirror} codeMirror
- * @param {!WebInspector.AutocompleteConfig} config
- */
-WebInspector.TextEditorAutocompleteController = function(textEditor, codeMirror, config)
-{
-    this._textEditor = textEditor;
-    this._codeMirror = codeMirror;
-    this._config = config;
-    this._initialized = false;
-
-    this._onScroll = this._onScroll.bind(this);
-    this._onCursorActivity = this._onCursorActivity.bind(this);
-    this._changes = this._changes.bind(this);
-    this._blur = this._blur.bind(this);
-    this._beforeChange = this._beforeChange.bind(this);
-    this._mouseDown = this.finishAutocomplete.bind(this);
-    this._codeMirror.on("changes", this._changes);
-
-    this._hintElement = createElementWithClass("span", "auto-complete-text");
-}
-
-WebInspector.TextEditorAutocompleteController.HintBookmark = Symbol("hint");
-
-WebInspector.TextEditorAutocompleteController.prototype = {
-    _initializeIfNeeded: function()
-    {
-        if (this._initialized)
-            return;
-        this._initialized = true;
-        this._codeMirror.on("scroll", this._onScroll);
-        this._codeMirror.on("cursorActivity", this._onCursorActivity);
-        this._codeMirror.on("mousedown", this._mouseDown);
-        this._codeMirror.on("blur", this._blur);
-        if (this._config.isWordChar) {
-            this._codeMirror.on("beforeChange", this._beforeChange);
-            this._dictionary = new WebInspector.TextDictionary();
-            this._addWordsFromText(this._codeMirror.getValue());
-        }
-    },
-
-    dispose: function()
-    {
-        this._codeMirror.off("changes", this._changes);
-        if (this._initialized) {
-            this._codeMirror.off("scroll", this._onScroll);
-            this._codeMirror.off("cursorActivity", this._onCursorActivity);
-            this._codeMirror.off("mousedown", this._mouseDown);
-            this._codeMirror.off("blur", this._blur);
-        }
-        if (this._dictionary) {
-            this._codeMirror.off("beforeChange", this._beforeChange);
-            this._dictionary.reset();
-        }
-    },
-
-    /**
-     * @param {!CodeMirror} codeMirror
-     * @param {!CodeMirror.BeforeChangeObject} changeObject
-     */
-    _beforeChange: function(codeMirror, changeObject)
-    {
-        this._updatedLines = this._updatedLines || {};
-        for (var i = changeObject.from.line; i <= changeObject.to.line; ++i)
-            this._updatedLines[i] = this._codeMirror.getLine(i);
-    },
-
-    /**
-     * @param {string} text
-     */
-    _addWordsFromText: function(text)
-    {
-        WebInspector.TextUtils.textToWords(text, /** @type {function(string):boolean} */ (this._config.isWordChar), addWord.bind(this));
-
-        /**
-         * @param {string} word
-         * @this {WebInspector.TextEditorAutocompleteController}
-         */
-        function addWord(word)
-        {
-            if (word.length && (word[0] < "0" || word[0] > "9"))
-                this._dictionary.addWord(word);
-        }
-    },
-
-    /**
-     * @param {string} text
-     */
-    _removeWordsFromText: function(text)
-    {
-        WebInspector.TextUtils.textToWords(text, /** @type {function(string):boolean} */ (this._config.isWordChar), (word) =>  this._dictionary.removeWord(word));
-    },
-
-    /**
-     * @param {number} lineNumber
-     * @param {number} columnNumber
-     * @return {?WebInspector.TextRange}
-     */
-    _substituteRange: function(lineNumber, columnNumber)
-    {
-        var range = this._config.substituteRangeCallback ? this._config.substituteRangeCallback(lineNumber, columnNumber) : null;
-        if (!range && this._config.isWordChar)
-            range = this._textEditor.wordRangeForCursorPosition(lineNumber, columnNumber, this._config.isWordChar);
-        return range;
-    },
-
-    /**
-     * @param {!WebInspector.TextRange} prefixRange
-     * @param {!WebInspector.TextRange} substituteRange
-     * @return {!Promise.<!WebInspector.SuggestBox.Suggestions>}
-     */
-    _wordsWithPrefix: function(prefixRange, substituteRange)
-    {
-        var external = this._config.suggestionsCallback ? this._config.suggestionsCallback(prefixRange, substituteRange) : null;
-        if (external)
-            return external;
-
-        if (!this._dictionary || prefixRange.startColumn === prefixRange.endColumn)
-            return Promise.resolve([]);
-
-        var completions = this._dictionary.wordsWithPrefix(this._textEditor.text(prefixRange));
-        var substituteWord = this._textEditor.text(substituteRange);
-        if (this._dictionary.wordCount(substituteWord) === 1)
-            completions = completions.filter((word) => word !== substituteWord);
-
-        completions.sort((a, b) => this._dictionary.wordCount(b) - this._dictionary.wordCount(a) || a.length - b.length);
-        return Promise.resolve(completions.map(item => ({ title: item })));
-    },
-
-    /**
-     * @param {!CodeMirror} codeMirror
-     * @param {!Array.<!CodeMirror.ChangeObject>} changes
-     */
-    _changes: function(codeMirror, changes)
-    {
-        if (!changes.length)
-            return;
-
-        if (this._dictionary && this._updatedLines) {
-            for (var lineNumber in this._updatedLines)
-                this._removeWordsFromText(this._updatedLines[lineNumber]);
-            delete this._updatedLines;
-
-            var linesToUpdate = {};
-            for (var changeIndex = 0; changeIndex < changes.length; ++changeIndex) {
-                var changeObject = changes[changeIndex];
-                var editInfo = WebInspector.CodeMirrorUtils.changeObjectToEditOperation(changeObject);
-                for (var i = editInfo.newRange.startLine; i <= editInfo.newRange.endLine; ++i)
-                    linesToUpdate[i] = this._codeMirror.getLine(i);
-            }
-            for (var lineNumber in linesToUpdate)
-                this._addWordsFromText(linesToUpdate[lineNumber]);
-        }
-
-        var singleCharInput = false;
-        var singleCharDelete = false;
-        var cursor = this._codeMirror.getCursor("head");
-        for (var changeIndex = 0; changeIndex < changes.length; ++changeIndex) {
-            var changeObject = changes[changeIndex];
-            if (changeObject.origin === "+input"
-                && changeObject.text.length === 1
-                && changeObject.text[0].length === 1
-                && changeObject.to.line === cursor.line
-                && changeObject.to.ch + 1 === cursor.ch) {
-                singleCharInput = true;
-                break;
-            }
-            if (this._suggestBox
-                && changeObject.origin === "+delete"
-                && changeObject.removed.length === 1
-                && changeObject.removed[0].length === 1
-                && changeObject.to.line === cursor.line
-                && changeObject.to.ch - 1 === cursor.ch) {
-                singleCharDelete = true;
-                break;
-            }
-        }
-        if (singleCharInput && this._hintMarker)
-            this._hintElement.textContent = this._hintElement.textContent.substring(1);
-
-        if (singleCharDelete && this._hintMarker && this._lastPrefix) {
-            this._hintElement.textContent = this._lastPrefix.charAt(this._lastPrefix.length - 1) + this._hintElement.textContent;
-            this._lastPrefix = this._lastPrefix.substring(0, this._lastPrefix.length - 1);
-        }
-        if (singleCharInput || singleCharDelete)
-            setImmediate(this.autocomplete.bind(this));
-        else
-            this.finishAutocomplete();
-    },
-
-    _blur: function()
-    {
-        this.finishAutocomplete();
-    },
-
-    /**
-     * @param {!WebInspector.TextRange} mainSelection
-     * @return {boolean}
-     */
-    _validateSelectionsContexts: function(mainSelection)
-    {
-        var selections = this._codeMirror.listSelections();
-        if (selections.length <= 1)
-            return true;
-        var mainSelectionContext = this._textEditor.text(mainSelection);
-        for (var i = 0; i < selections.length; ++i) {
-            var wordRange = this._substituteRange(selections[i].head.line, selections[i].head.ch);
-            if (!wordRange)
-                return false;
-            var context = this._textEditor.text(wordRange);
-            if (context !== mainSelectionContext)
-                return false;
-        }
-        return true;
-    },
-
-    autocomplete: function()
-    {
-        this._initializeIfNeeded();
-        if (this._codeMirror.somethingSelected()) {
-            this.finishAutocomplete();
-            return;
-        }
-
-        var cursor = this._codeMirror.getCursor("head");
-        var substituteRange = this._substituteRange(cursor.line, cursor.ch);
-        if (!substituteRange || !this._validateSelectionsContexts(substituteRange)) {
-            this.finishAutocomplete();
-            return;
-        }
-
-        var prefixRange = substituteRange.clone();
-        prefixRange.endColumn = cursor.ch;
-        var prefix = this._textEditor.text(prefixRange);
-        var hadSuggestBox = false;
-        if (this._suggestBox)
-            hadSuggestBox = true;
-
-        this._wordsWithPrefix(prefixRange, substituteRange).then(wordsAcquired.bind(this));
-
-        /**
-         * @param {!WebInspector.SuggestBox.Suggestions} wordsWithPrefix
-         * @this {WebInspector.TextEditorAutocompleteController}
-         */
-        function wordsAcquired(wordsWithPrefix)
-        {
-            if (!wordsWithPrefix.length || (wordsWithPrefix.length === 1 && prefix === wordsWithPrefix[0].title) || (!this._suggestBox && hadSuggestBox)) {
-                this.finishAutocomplete();
-                this._onSuggestionsShownForTest([]);
-                return;
-            }
-            if (!this._suggestBox)
-                this._suggestBox = new WebInspector.SuggestBox(this, 6);
-
-            var oldPrefixRange = this._prefixRange;
-            this._prefixRange = prefixRange;
-            if (!oldPrefixRange || prefixRange.startLine !== oldPrefixRange.startLine || prefixRange.startColumn !== oldPrefixRange.startColumn)
-                this._updateAnchorBox();
-            this._suggestBox.updateSuggestions(this._anchorBox, wordsWithPrefix, 0, !this._isCursorAtEndOfLine(), prefix);
-            this._onSuggestionsShownForTest(wordsWithPrefix);
-            this._addHintMarker(wordsWithPrefix[0].title);
-        }
-    },
-
-    /**
-     * @param {string} hint
-     */
-    _addHintMarker: function(hint)
-    {
-        this._clearHintMarker();
-        if (!this._isCursorAtEndOfLine())
-            return;
-        var prefix = this._textEditor.text(this._prefixRange);
-        this._lastPrefix = prefix;
-        this._hintElement.textContent = hint.substring(prefix.length).split("\n")[0];
-        var cursor = this._codeMirror.getCursor("to");
-        this._hintMarker = this._textEditor.addBookmark(cursor.line, cursor.ch, this._hintElement, WebInspector.TextEditorAutocompleteController.HintBookmark, true);
-    },
-
-    _clearHintMarker: function()
-    {
-        if (!this._hintMarker)
-            return;
-        this._hintMarker.clear();
-        delete this._hintMarker;
-    },
-
-    /**
-     * @param {!Array<{className: (string|undefined), title: string}>} suggestions
-     */
-    _onSuggestionsShownForTest: function(suggestions) { },
-
-    finishAutocomplete: function()
-    {
-        if (!this._suggestBox)
-            return;
-        this._suggestBox.hide();
-        this._suggestBox = null;
-        this._prefixRange = null;
-        this._anchorBox = null;
-        this._clearHintMarker();
-    },
-
-    /**
-     * @param {!Event} event
-     * @return {boolean}
-     */
-    keyDown: function(event)
-    {
-        if (!this._suggestBox)
-            return false;
-        switch (event.keyCode) {
-        case WebInspector.KeyboardShortcut.Keys.Tab.code:
-            this._suggestBox.acceptSuggestion();
-            this.finishAutocomplete();
-            return true;
-        case WebInspector.KeyboardShortcut.Keys.End.code:
-        case WebInspector.KeyboardShortcut.Keys.Right.code:
-            if (this._isCursorAtEndOfLine()) {
-                this._suggestBox.acceptSuggestion();
-                this.finishAutocomplete();
-                return true;
-            } else {
-                this.finishAutocomplete();
-                return false;
-            }
-        case WebInspector.KeyboardShortcut.Keys.Left.code:
-        case WebInspector.KeyboardShortcut.Keys.Home.code:
-            this.finishAutocomplete();
-            return false;
-        case WebInspector.KeyboardShortcut.Keys.Esc.code:
-            this.finishAutocomplete();
-            return true;
-        }
-        return this._suggestBox.keyPressed(event);
-    },
-
-    /**
-     * @return {boolean}
-     */
-    _isCursorAtEndOfLine: function()
-    {
-        var cursor = this._codeMirror.getCursor("to");
-        return cursor.ch === this._codeMirror.getLine(cursor.line).length;
-    },
-
-    /**
-     * @override
-     * @param {string} suggestion
-     * @param {boolean=} isIntermediateSuggestion
-     */
-    applySuggestion: function(suggestion, isIntermediateSuggestion)
-    {
-        this._currentSuggestion = suggestion;
-        this._addHintMarker(suggestion);
-    },
-
-    /**
-     * @override
-     */
-    acceptSuggestion: function()
-    {
-        if (this._prefixRange.endColumn - this._prefixRange.startColumn === this._currentSuggestion.length)
-            return;
-
-        var selections = this._codeMirror.listSelections().slice();
-        var prefixLength = this._prefixRange.endColumn - this._prefixRange.startColumn;
-        for (var i = selections.length - 1; i >= 0; --i) {
-            var start = selections[i].head;
-            var end = new CodeMirror.Pos(start.line, start.ch - prefixLength);
-            this._codeMirror.replaceRange(this._currentSuggestion, start, end, "+autocomplete");
-        }
-    },
-
-    _onScroll: function()
-    {
-        if (!this._suggestBox)
-            return;
-        var cursor = this._codeMirror.getCursor();
-        var scrollInfo = this._codeMirror.getScrollInfo();
-        var topmostLineNumber = this._codeMirror.lineAtHeight(scrollInfo.top, "local");
-        var bottomLine = this._codeMirror.lineAtHeight(scrollInfo.top + scrollInfo.clientHeight, "local");
-        if (cursor.line < topmostLineNumber || cursor.line > bottomLine)
-            this.finishAutocomplete();
-        else {
-            this._updateAnchorBox();
-            this._suggestBox.setPosition(this._anchorBox);
-        }
-    },
-
-    _onCursorActivity: function()
-    {
-        if (!this._suggestBox)
-            return;
-        var cursor = this._codeMirror.getCursor();
-        if (cursor.line !== this._prefixRange.startLine || cursor.ch > this._prefixRange.endColumn + 1 || cursor.ch <= this._prefixRange.startColumn)
-            this.finishAutocomplete();
-    },
-
-    _updateAnchorBox: function()
-    {
-        var line = this._prefixRange.startLine;
-        var column = this._prefixRange.startColumn;
-        var metrics = this._textEditor.cursorPositionToCoordinates(line, column);
-        this._anchorBox = metrics ? new AnchorBox(metrics.x, metrics.y, 0, metrics.height) : null;
-    },
-}
-
-/**
- * @typedef {{
- *     substituteRangeCallback: ((function(number, number):?WebInspector.TextRange)|undefined),
- *     suggestionsCallback: ((function(!WebInspector.TextRange, !WebInspector.TextRange):?Promise.<!WebInspector.SuggestBox.Suggestions>)|undefined),
- *     isWordChar: ((function(string):boolean)|undefined)
- * }}
- **/
-WebInspector.AutocompleteConfig;