rename part #2
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Fabian Jakobs
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421
lib/ace/selection.js
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421
lib/ace/selection.js
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Ajax.org Code Editor (ACE).
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*
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* The Initial Developer of the Original Code is
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* Ajax.org Services B.V.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Fabian Jakobs <fabian AT ajax DOT org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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var oop = require("ace/lib/oop");
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var lang = require("ace/lib/lang");
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var MEventEmitter = require("ace/event_emitter");
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var Range = require("ace/range");
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var Selection = function(doc) {
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this.doc = doc;
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this.clearSelection();
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this.selectionLead = {
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row: 0,
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column: 0
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};
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};
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(function() {
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oop.implement(this, MEventEmitter);
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this.isEmpty = function() {
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return (!this.selectionAnchor ||
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(this.selectionAnchor.row == this.selectionLead.row &&
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this.selectionAnchor.column == this.selectionLead.column));
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};
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this.isMultiLine = function() {
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if (this.isEmpty()) {
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return false;
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}
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return this.getRange().isMultiLine();
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};
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this.getCursor = function() {
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return this.selectionLead;
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};
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this.setSelectionAnchor = function(row, column) {
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var anchor = this.$clipPositionToDocument(row, column);
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if (!this.selectionAnchor) {
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this.selectionAnchor = anchor;
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this.$dispatchEvent("changeSelection", {});
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}
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else if (this.selectionAnchor.row !== anchor.row || this.selectionAnchor.column !== anchor.column) {
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this.selectionAnchor = anchor;
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this.$dispatchEvent("changeSelection", {});
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}
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};
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this.getSelectionAnchor = function() {
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if (this.selectionAnchor) {
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return this.$clone(this.selectionAnchor);
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} else {
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return this.$clone(this.selectionLead);
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}
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};
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this.getSelectionLead = function() {
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return this.$clone(this.selectionLead);
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};
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this.shiftSelection = function(columns) {
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if (this.isEmpty()) {
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this.moveCursorTo(this.selectionLead.row, this.selectionLead.column + columns);
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return;
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};
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var anchor = this.getSelectionAnchor();
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var lead = this.getSelectionLead();
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var isBackwards = this.isBackwards();
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if (!isBackwards || anchor.column !== 0)
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this.setSelectionAnchor(anchor.row, anchor.column + columns);
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if (isBackwards || lead.column !== 0) {
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this.$moveSelection(function() {
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this.moveCursorTo(lead.row, lead.column + columns);
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});
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}
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};
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this.isBackwards = function() {
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var anchor = this.selectionAnchor || this.selectionLead;
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var lead = this.selectionLead;
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return (anchor.row > lead.row || (anchor.row == lead.row && anchor.column > lead.column));
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};
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this.getRange = function() {
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var anchor = this.selectionAnchor || this.selectionLead;
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var lead = this.selectionLead;
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if (this.isBackwards()) {
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return Range.fromPoints(lead, anchor);
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}
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else {
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return Range.fromPoints(anchor, lead);
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}
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};
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this.clearSelection = function() {
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if (this.selectionAnchor) {
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this.selectionAnchor = null;
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this.$dispatchEvent("changeSelection", {});
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}
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};
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this.selectAll = function() {
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var lastRow = this.doc.getLength() - 1;
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this.setSelectionAnchor(lastRow, this.doc.getLine(lastRow).length);
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this.$moveSelection(function() {
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this.moveCursorTo(0, 0);
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});
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};
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this.setSelectionRange = function(range, reverse) {
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if (reverse) {
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this.setSelectionAnchor(range.end.row, range.end.column);
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this.selectTo(range.start.row, range.start.column);
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} else {
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this.setSelectionAnchor(range.start.row, range.start.column);
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this.selectTo(range.end.row, range.end.column);
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}
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};
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this.$moveSelection = function(mover) {
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var changed = false;
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if (!this.selectionAnchor) {
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changed = true;
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this.selectionAnchor = this.$clone(this.selectionLead);
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}
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var cursor = this.$clone(this.selectionLead);
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mover.call(this);
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if (cursor.row !== this.selectionLead.row || cursor.column !== this.selectionLead.column) {
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changed = true;
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}
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if (changed)
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this.$dispatchEvent("changeSelection", {});
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};
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this.selectTo = function(row, column) {
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this.$moveSelection(function() {
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this.moveCursorTo(row, column);
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});
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};
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this.selectToPosition = function(pos) {
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this.$moveSelection(function() {
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this.moveCursorToPosition(pos);
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});
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};
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this.selectUp = function() {
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this.$moveSelection(this.moveCursorUp);
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};
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this.selectDown = function() {
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this.$moveSelection(this.moveCursorDown);
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};
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this.selectRight = function() {
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this.$moveSelection(this.moveCursorRight);
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};
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this.selectLeft = function() {
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this.$moveSelection(this.moveCursorLeft);
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};
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this.selectLineStart = function() {
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this.$moveSelection(this.moveCursorLineStart);
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};
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this.selectLineEnd = function() {
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this.$moveSelection(this.moveCursorLineEnd);
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};
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this.selectFileEnd = function() {
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this.$moveSelection(this.moveCursorFileEnd);
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};
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this.selectFileStart = function() {
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this.$moveSelection(this.moveCursorFileStart);
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};
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this.selectWordRight = function() {
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this.$moveSelection(this.moveCursorWordRight);
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};
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this.selectWordLeft = function() {
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this.$moveSelection(this.moveCursorWordLeft);
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};
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this.selectWord = function() {
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var cursor = this.selectionLead;
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var column = cursor.column;
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var range = this.doc.getWordRange(cursor.row, column);
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this.setSelectionRange(range);
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/*this.setSelectionAnchor(cursor.row, start);
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this.$moveSelection(function() {
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this.moveCursorTo(cursor.row, end);
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});*/
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};
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this.selectLine = function() {
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this.setSelectionAnchor(this.selectionLead.row, 0);
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this.$moveSelection(function() {
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this.moveCursorTo(this.selectionLead.row + 1, 0);
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});
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};
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this.moveCursorUp = function() {
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this.moveCursorBy(-1, 0);
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};
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this.moveCursorDown = function() {
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this.moveCursorBy(1, 0);
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};
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this.moveCursorLeft = function() {
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if (this.selectionLead.column == 0) {
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if (this.selectionLead.row > 0) {
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this.moveCursorTo(this.selectionLead.row - 1, this.doc
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.getLine(this.selectionLead.row - 1).length);
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}
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}
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else {
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this.moveCursorBy(0, -1);
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}
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};
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this.moveCursorRight = function() {
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if (this.selectionLead.column == this.doc.getLine(this.selectionLead.row).length) {
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if (this.selectionLead.row < this.doc.getLength() - 1) {
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this.moveCursorTo(this.selectionLead.row + 1, 0);
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}
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}
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else {
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this.moveCursorBy(0, 1);
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}
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};
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this.moveCursorLineStart = function() {
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var row = this.selectionLead.row;
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var column = this.selectionLead.column;
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var beforeCursor = this.doc.getLine(row).slice(0, column);
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var leadingSpace = beforeCursor.match(/^\s*/);
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if (leadingSpace[0].length == 0)
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this.moveCursorTo(row, this.doc.getLine(row).match(/^\s*/)[0].length);
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else if (leadingSpace[0].length >= column)
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this.moveCursorTo(row, 0);
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else
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this.moveCursorTo(row, leadingSpace[0].length);
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};
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this.moveCursorLineEnd = function() {
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this.moveCursorTo(this.selectionLead.row,
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this.doc.getLine(this.selectionLead.row).length);
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};
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this.moveCursorFileEnd = function() {
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var row = this.doc.getLength() - 1;
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var column = this.doc.getLine(row).length;
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this.moveCursorTo(row, column);
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};
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this.moveCursorFileStart = function() {
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this.moveCursorTo(0, 0);
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};
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this.moveCursorWordRight = function() {
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var row = this.selectionLead.row;
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var column = this.selectionLead.column;
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var line = this.doc.getLine(row);
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var rightOfCursor = line.substring(column);
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var match;
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this.doc.nonTokenRe.lastIndex = 0;
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this.doc.tokenRe.lastIndex = 0;
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if (column == line.length) {
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this.moveCursorRight();
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return;
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}
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else if (match = this.doc.nonTokenRe.exec(rightOfCursor)) {
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column += this.doc.nonTokenRe.lastIndex;
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this.doc.nonTokenRe.lastIndex = 0;
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}
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else if (match = this.doc.tokenRe.exec(rightOfCursor)) {
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column += this.doc.tokenRe.lastIndex;
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this.doc.tokenRe.lastIndex = 0;
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}
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this.moveCursorTo(row, column);
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};
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this.moveCursorWordLeft = function() {
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var row = this.selectionLead.row;
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var column = this.selectionLead.column;
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var line = this.doc.getLine(row);
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var leftOfCursor = lang.stringReverse(line.substring(0, column));
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var match;
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this.doc.nonTokenRe.lastIndex = 0;
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this.doc.tokenRe.lastIndex = 0;
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if (column == 0) {
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this.moveCursorLeft();
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return;
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}
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else if (match = this.doc.nonTokenRe.exec(leftOfCursor)) {
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column -= this.doc.nonTokenRe.lastIndex;
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this.doc.nonTokenRe.lastIndex = 0;
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}
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else if (match = this.doc.tokenRe.exec(leftOfCursor)) {
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column -= this.doc.tokenRe.lastIndex;
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this.doc.tokenRe.lastIndex = 0;
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}
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this.moveCursorTo(row, column);
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};
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this.moveCursorBy = function(rows, chars) {
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this.moveCursorTo(this.selectionLead.row + rows, this.selectionLead.column + chars);
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};
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this.moveCursorToPosition = function(position) {
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this.moveCursorTo(position.row, position.column);
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};
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this.moveCursorTo = function(row, column) {
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var cursor = this.$clipPositionToDocument(row, column);
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// only dispatch change if the cursor actually changed
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if (cursor.row !== this.selectionLead.row || cursor.column !== this.selectionLead.column) {
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this.selectionLead = cursor;
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this.$dispatchEvent("changeCursor", { data: this.getCursor() });
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}
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};
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this.moveCursorUp = function() {
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this.moveCursorBy(-1, 0);
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};
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this.$clipPositionToDocument = function(row, column) {
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var pos = {};
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if (row >= this.doc.getLength()) {
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pos.row = Math.max(0, this.doc.getLength() - 1);
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pos.column = this.doc.getLine(pos.row).length;
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}
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else if (row < 0) {
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pos.row = 0;
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pos.column = 0;
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}
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else {
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pos.row = row;
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pos.column = Math.min(this.doc.getLine(pos.row).length,
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Math.max(0, column));
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}
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return pos;
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};
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this.$clone = function(pos) {
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return {
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row: pos.row,
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column: pos.column
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};
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};
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}).call(Selection.prototype);
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return Selection;
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});
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