kopia lustrzana https://github.com/c9/core
320 wiersze
12 KiB
JavaScript
320 wiersze
12 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Distributed under the BSD license:
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*
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* Copyright (c) 2010, Ajax.org B.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Ajax.org B.V. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ***** END LICENSE BLOCK ***** */
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define(function(require, exports, module) {
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"use strict";
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var useragent = require("../lib/useragent");
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var DRAG_OFFSET = 0; // pixels
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var SCROLL_COOLDOWN_T = 250; // milliseconds
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function DefaultHandlers(mouseHandler) {
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mouseHandler.$clickSelection = null;
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var editor = mouseHandler.editor;
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editor.setDefaultHandler("mousedown", this.onMouseDown.bind(mouseHandler));
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editor.setDefaultHandler("dblclick", this.onDoubleClick.bind(mouseHandler));
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editor.setDefaultHandler("tripleclick", this.onTripleClick.bind(mouseHandler));
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editor.setDefaultHandler("quadclick", this.onQuadClick.bind(mouseHandler));
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editor.setDefaultHandler("mousewheel", this.onMouseWheel.bind(mouseHandler));
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editor.setDefaultHandler("touchmove", this.onTouchMove.bind(mouseHandler));
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var exports = ["select", "startSelect", "selectEnd", "selectAllEnd", "selectByWordsEnd",
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"selectByLinesEnd", "dragWait", "dragWaitEnd", "focusWait"];
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exports.forEach(function(x) {
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mouseHandler[x] = this[x];
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}, this);
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mouseHandler.selectByLines = this.extendSelectionBy.bind(mouseHandler, "getLineRange");
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mouseHandler.selectByWords = this.extendSelectionBy.bind(mouseHandler, "getWordRange");
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}
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(function() {
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this.onMouseDown = function(ev) {
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var inSelection = ev.inSelection();
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var pos = ev.getDocumentPosition();
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this.mousedownEvent = ev;
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var editor = this.editor;
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var button = ev.getButton();
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if (button !== 0) {
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var selectionRange = editor.getSelectionRange();
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var selectionEmpty = selectionRange.isEmpty();
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if (selectionEmpty || button == 1)
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editor.selection.moveToPosition(pos);
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// 2: contextmenu, 1: linux paste
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if (button == 2) {
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editor.textInput.onContextMenu(ev.domEvent);
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if (!useragent.isMozilla)
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ev.preventDefault();
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}
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// stopping event here breaks contextmenu on ff mac
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// not stoping breaks it on chrome mac
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return;
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}
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this.mousedownEvent.time = Date.now();
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// if this click caused the editor to be focused should not clear the
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// selection
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if (inSelection && !editor.isFocused()) {
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editor.focus();
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if (this.$focusTimeout && !this.$clickSelection && !editor.inMultiSelectMode) {
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this.setState("focusWait");
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this.captureMouse(ev);
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return;
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}
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}
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this.captureMouse(ev);
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this.startSelect(pos, ev.domEvent._clicks > 1);
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return ev.preventDefault();
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};
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this.startSelect = function(pos, waitForClickSelection) {
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pos = pos || this.editor.renderer.screenToTextCoordinates(this.x, this.y);
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var editor = this.editor;
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// allow double/triple click handlers to change selection
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if (this.mousedownEvent.getShiftKey())
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editor.selection.selectToPosition(pos);
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else if (!waitForClickSelection)
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editor.selection.moveToPosition(pos);
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if (!waitForClickSelection)
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this.select();
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if (editor.renderer.scroller.setCapture) {
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editor.renderer.scroller.setCapture();
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}
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editor.setStyle("ace_selecting");
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this.setState("select");
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};
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this.select = function() {
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var anchor, editor = this.editor;
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var cursor = editor.renderer.screenToTextCoordinates(this.x, this.y);
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if (this.$clickSelection) {
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var cmp = this.$clickSelection.comparePoint(cursor);
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if (cmp == -1) {
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anchor = this.$clickSelection.end;
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} else if (cmp == 1) {
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anchor = this.$clickSelection.start;
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} else {
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var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
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cursor = orientedRange.cursor;
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anchor = orientedRange.anchor;
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}
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editor.selection.setSelectionAnchor(anchor.row, anchor.column);
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}
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editor.selection.selectToPosition(cursor);
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editor.renderer.scrollCursorIntoView();
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};
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this.extendSelectionBy = function(unitName) {
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var anchor, editor = this.editor;
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var cursor = editor.renderer.screenToTextCoordinates(this.x, this.y);
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var range = editor.selection[unitName](cursor.row, cursor.column);
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if (this.$clickSelection) {
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var cmpStart = this.$clickSelection.comparePoint(range.start);
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var cmpEnd = this.$clickSelection.comparePoint(range.end);
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if (cmpStart == -1 && cmpEnd <= 0) {
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anchor = this.$clickSelection.end;
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if (range.end.row != cursor.row || range.end.column != cursor.column)
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cursor = range.start;
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} else if (cmpEnd == 1 && cmpStart >= 0) {
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anchor = this.$clickSelection.start;
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if (range.start.row != cursor.row || range.start.column != cursor.column)
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cursor = range.end;
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} else if (cmpStart == -1 && cmpEnd == 1) {
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cursor = range.end;
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anchor = range.start;
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} else {
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var orientedRange = calcRangeOrientation(this.$clickSelection, cursor);
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cursor = orientedRange.cursor;
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anchor = orientedRange.anchor;
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}
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editor.selection.setSelectionAnchor(anchor.row, anchor.column);
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}
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editor.selection.selectToPosition(cursor);
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editor.renderer.scrollCursorIntoView();
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};
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this.selectEnd =
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this.selectAllEnd =
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this.selectByWordsEnd =
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this.selectByLinesEnd = function() {
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this.$clickSelection = null;
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this.editor.unsetStyle("ace_selecting");
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if (this.editor.renderer.scroller.releaseCapture) {
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this.editor.renderer.scroller.releaseCapture();
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}
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};
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this.focusWait = function() {
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var distance = calcDistance(this.mousedownEvent.x, this.mousedownEvent.y, this.x, this.y);
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var time = Date.now();
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if (distance > DRAG_OFFSET || time - this.mousedownEvent.time > this.$focusTimeout)
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this.startSelect(this.mousedownEvent.getDocumentPosition());
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};
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this.onDoubleClick = function(ev) {
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var pos = ev.getDocumentPosition();
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var editor = this.editor;
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var session = editor.session;
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var range = session.getBracketRange(pos);
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if (range) {
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if (range.isEmpty()) {
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range.start.column--;
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range.end.column++;
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}
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this.setState("select");
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} else {
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range = editor.selection.getWordRange(pos.row, pos.column);
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this.setState("selectByWords");
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}
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this.$clickSelection = range;
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this.select();
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};
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this.onTripleClick = function(ev) {
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var pos = ev.getDocumentPosition();
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var editor = this.editor;
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this.setState("selectByLines");
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var range = editor.getSelectionRange();
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if (range.isMultiLine() && range.contains(pos.row, pos.column)) {
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this.$clickSelection = editor.selection.getLineRange(range.start.row);
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this.$clickSelection.end = editor.selection.getLineRange(range.end.row).end;
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} else {
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this.$clickSelection = editor.selection.getLineRange(pos.row);
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}
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this.select();
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};
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this.onQuadClick = function(ev) {
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var editor = this.editor;
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editor.selectAll();
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this.$clickSelection = editor.getSelectionRange();
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this.setState("selectAll");
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};
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this.onMouseWheel = function(ev) {
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if (ev.getAccelKey())
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return;
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// shift wheel to horizontal scroll
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if (ev.getShiftKey() && ev.wheelY && !ev.wheelX) {
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ev.wheelX = ev.wheelY;
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ev.wheelY = 0;
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}
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var editor = this.editor;
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if (!this.$lastScroll)
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this.$lastScroll = { t: 0, vx: 0, vy: 0, allowed: 0 };
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var prevScroll = this.$lastScroll;
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var t = ev.domEvent.timeStamp;
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var dt = t - prevScroll.t;
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var vx = dt ? ev.wheelX / dt : prevScroll.vx;
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var vy = dt ? ev.wheelY / dt : prevScroll.vy;
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// touchbar keeps sending scroll events after touchend, if we do not stop these events,
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// users can't scrol editor without scrolling the parent node
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if (dt < SCROLL_COOLDOWN_T) {
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vx = (vx + prevScroll.vx) / 2;
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vy = (vy + prevScroll.vy) / 2;
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}
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var direction = Math.abs(vx / vy);
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var canScroll = false;
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if (direction >= 1 && editor.renderer.isScrollableBy(ev.wheelX * ev.speed, 0))
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canScroll = true;
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if (direction <= 1 && editor.renderer.isScrollableBy(0, ev.wheelY * ev.speed))
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canScroll = true;
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if (canScroll) {
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prevScroll.allowed = t;
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} else if (t - prevScroll.allowed < SCROLL_COOLDOWN_T) {
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var isSlower = Math.abs(vx) <= 1.1 * Math.abs(prevScroll.vx)
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&& Math.abs(vy) <= 1.1 * Math.abs(prevScroll.vy);
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if (isSlower) {
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canScroll = true;
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prevScroll.allowed = t;
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}
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else {
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prevScroll.allowed = 0;
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}
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}
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prevScroll.t = t;
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prevScroll.vx = vx;
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prevScroll.vy = vy;
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if (canScroll) {
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editor.renderer.scrollBy(ev.wheelX * ev.speed, ev.wheelY * ev.speed);
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return ev.stop();
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}
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};
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this.onTouchMove = function(ev) {
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this.editor._emit("mousewheel", ev);
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};
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}).call(DefaultHandlers.prototype);
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exports.DefaultHandlers = DefaultHandlers;
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function calcDistance(ax, ay, bx, by) {
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return Math.sqrt(Math.pow(bx - ax, 2) + Math.pow(by - ay, 2));
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}
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function calcRangeOrientation(range, cursor) {
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if (range.start.row == range.end.row)
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var cmp = 2 * cursor.column - range.start.column - range.end.column;
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else if (range.start.row == range.end.row - 1 && !range.start.column && !range.end.column)
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var cmp = cursor.column - 4;
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else
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var cmp = 2 * cursor.row - range.start.row - range.end.row;
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if (cmp < 0)
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return {cursor: range.start, anchor: range.end};
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else
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return {cursor: range.end, anchor: range.start};
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}
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});
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