261 lines
8.5 KiB
JavaScript
Executable File
261 lines
8.5 KiB
JavaScript
Executable File
/* ***** 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 dom = require("../lib/dom");
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var Cursor = function(parentEl) {
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this.element = dom.createElement("div");
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this.element.className = "ace_layer ace_cursor-layer";
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parentEl.appendChild(this.element);
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this.isVisible = false;
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this.isBlinking = true;
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this.blinkInterval = 1000;
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this.smoothBlinking = false;
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this.cursors = [];
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this.cursor = this.addCursor();
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dom.addCssClass(this.element, "ace_hidden-cursors");
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this.$updateCursors = this.$updateOpacity.bind(this);
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};
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(function() {
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this.$updateOpacity = function(val) {
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var cursors = this.cursors;
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for (var i = cursors.length; i--; )
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dom.setStyle(cursors[i].style, "opacity", val ? "" : "0");
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};
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this.$startCssAnimation = function() {
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var cursors = this.cursors;
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for (var i = cursors.length; i--; )
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cursors[i].style.animationDuration = this.blinkInterval + "ms";
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setTimeout(function() {
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dom.addCssClass(this.element, "ace_animate-blinking");
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}.bind(this));
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};
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this.$stopCssAnimation = function() {
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dom.removeCssClass(this.element, "ace_animate-blinking");
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};
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this.$padding = 0;
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this.setPadding = function(padding) {
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this.$padding = padding;
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};
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this.setSession = function(session) {
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this.session = session;
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};
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this.setBlinking = function(blinking) {
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if (blinking != this.isBlinking) {
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this.isBlinking = blinking;
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this.restartTimer();
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}
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};
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this.setBlinkInterval = function(blinkInterval) {
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if (blinkInterval != this.blinkInterval) {
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this.blinkInterval = blinkInterval;
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this.restartTimer();
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}
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};
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this.setSmoothBlinking = function(smoothBlinking) {
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if (smoothBlinking != this.smoothBlinking) {
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this.smoothBlinking = smoothBlinking;
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dom.setCssClass(this.element, "ace_smooth-blinking", smoothBlinking);
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this.$updateCursors(true);
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this.restartTimer();
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}
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};
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this.addCursor = function() {
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var el = dom.createElement("div");
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el.className = "ace_cursor";
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this.element.appendChild(el);
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this.cursors.push(el);
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return el;
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};
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this.removeCursor = function() {
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if (this.cursors.length > 1) {
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var el = this.cursors.pop();
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el.parentNode.removeChild(el);
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return el;
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}
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};
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this.hideCursor = function() {
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this.isVisible = false;
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dom.addCssClass(this.element, "ace_hidden-cursors");
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this.restartTimer();
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};
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this.showCursor = function() {
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this.isVisible = true;
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dom.removeCssClass(this.element, "ace_hidden-cursors");
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this.restartTimer();
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};
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this.restartTimer = function() {
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var update = this.$updateCursors;
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clearInterval(this.intervalId);
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clearTimeout(this.timeoutId);
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this.$stopCssAnimation();
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if (this.smoothBlinking) {
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dom.removeCssClass(this.element, "ace_smooth-blinking");
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}
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update(true);
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if (!this.isBlinking || !this.blinkInterval || !this.isVisible) {
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this.$stopCssAnimation();
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return;
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}
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if (this.smoothBlinking) {
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setTimeout(function(){
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dom.addCssClass(this.element, "ace_smooth-blinking");
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}.bind(this));
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}
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if (dom.HAS_CSS_ANIMATION) {
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this.$startCssAnimation();
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} else {
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var blink = function(){
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this.timeoutId = setTimeout(function() {
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update(false);
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}, 0.6 * this.blinkInterval);
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}.bind(this);
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this.intervalId = setInterval(function() {
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update(true);
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blink();
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}, this.blinkInterval);
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blink();
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}
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};
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this.getPixelPosition = function(position, onScreen) {
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if (!this.config || !this.session)
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return {left : 0, top : 0};
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if (!position)
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position = this.session.selection.getCursor();
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var pos = this.session.documentToScreenPosition(position);
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var cursorLeft = this.$padding + (this.session.$bidiHandler.isBidiRow(pos.row, position.row)
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? this.session.$bidiHandler.getPosLeft(pos.column)
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: pos.column * this.config.characterWidth);
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var cursorTop = (pos.row - (onScreen ? this.config.firstRowScreen : 0)) *
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this.config.lineHeight;
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return {left : cursorLeft, top : cursorTop};
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};
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this.isCursorInView = function(pixelPos, config) {
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return pixelPos.top >= 0 && pixelPos.top < config.maxHeight;
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};
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this.update = function(config) {
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this.config = config;
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var selections = this.session.$selectionMarkers;
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var i = 0, cursorIndex = 0;
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if (selections === undefined || selections.length === 0){
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selections = [{cursor: null}];
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}
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for (var i = 0, n = selections.length; i < n; i++) {
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var pixelPos = this.getPixelPosition(selections[i].cursor, true);
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if ((pixelPos.top > config.height + config.offset ||
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pixelPos.top < 0) && i > 1) {
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continue;
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}
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var element = this.cursors[cursorIndex++] || this.addCursor();
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var style = element.style;
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if (!this.drawCursor) {
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if (!this.isCursorInView(pixelPos, config)) {
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dom.setStyle(style, "display", "none");
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} else {
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dom.setStyle(style, "display", "block");
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dom.translate(element, pixelPos.left, pixelPos.top);
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dom.setStyle(style, "width", Math.round(config.characterWidth) + "px");
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dom.setStyle(style, "height", config.lineHeight + "px");
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}
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} else {
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this.drawCursor(element, pixelPos, config, selections[i], this.session);
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}
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}
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while (this.cursors.length > cursorIndex)
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this.removeCursor();
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var overwrite = this.session.getOverwrite();
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this.$setOverwrite(overwrite);
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// cache for textarea and gutter highlight
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this.$pixelPos = pixelPos;
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this.restartTimer();
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};
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this.drawCursor = null;
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this.$setOverwrite = function(overwrite) {
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if (overwrite != this.overwrite) {
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this.overwrite = overwrite;
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if (overwrite)
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dom.addCssClass(this.element, "ace_overwrite-cursors");
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else
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dom.removeCssClass(this.element, "ace_overwrite-cursors");
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}
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};
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this.destroy = function() {
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clearInterval(this.intervalId);
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clearTimeout(this.timeoutId);
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};
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}).call(Cursor.prototype);
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exports.Cursor = Cursor;
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});
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