big-moving.ru/api/soft/ajaxorg/lib/ace/layer/cursor.js

261 lines
8.5 KiB
JavaScript
Executable File

/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2010, Ajax.org B.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Ajax.org B.V. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
define(function(require, exports, module) {
"use strict";
var dom = require("../lib/dom");
var Cursor = function(parentEl) {
this.element = dom.createElement("div");
this.element.className = "ace_layer ace_cursor-layer";
parentEl.appendChild(this.element);
this.isVisible = false;
this.isBlinking = true;
this.blinkInterval = 1000;
this.smoothBlinking = false;
this.cursors = [];
this.cursor = this.addCursor();
dom.addCssClass(this.element, "ace_hidden-cursors");
this.$updateCursors = this.$updateOpacity.bind(this);
};
(function() {
this.$updateOpacity = function(val) {
var cursors = this.cursors;
for (var i = cursors.length; i--; )
dom.setStyle(cursors[i].style, "opacity", val ? "" : "0");
};
this.$startCssAnimation = function() {
var cursors = this.cursors;
for (var i = cursors.length; i--; )
cursors[i].style.animationDuration = this.blinkInterval + "ms";
setTimeout(function() {
dom.addCssClass(this.element, "ace_animate-blinking");
}.bind(this));
};
this.$stopCssAnimation = function() {
dom.removeCssClass(this.element, "ace_animate-blinking");
};
this.$padding = 0;
this.setPadding = function(padding) {
this.$padding = padding;
};
this.setSession = function(session) {
this.session = session;
};
this.setBlinking = function(blinking) {
if (blinking != this.isBlinking) {
this.isBlinking = blinking;
this.restartTimer();
}
};
this.setBlinkInterval = function(blinkInterval) {
if (blinkInterval != this.blinkInterval) {
this.blinkInterval = blinkInterval;
this.restartTimer();
}
};
this.setSmoothBlinking = function(smoothBlinking) {
if (smoothBlinking != this.smoothBlinking) {
this.smoothBlinking = smoothBlinking;
dom.setCssClass(this.element, "ace_smooth-blinking", smoothBlinking);
this.$updateCursors(true);
this.restartTimer();
}
};
this.addCursor = function() {
var el = dom.createElement("div");
el.className = "ace_cursor";
this.element.appendChild(el);
this.cursors.push(el);
return el;
};
this.removeCursor = function() {
if (this.cursors.length > 1) {
var el = this.cursors.pop();
el.parentNode.removeChild(el);
return el;
}
};
this.hideCursor = function() {
this.isVisible = false;
dom.addCssClass(this.element, "ace_hidden-cursors");
this.restartTimer();
};
this.showCursor = function() {
this.isVisible = true;
dom.removeCssClass(this.element, "ace_hidden-cursors");
this.restartTimer();
};
this.restartTimer = function() {
var update = this.$updateCursors;
clearInterval(this.intervalId);
clearTimeout(this.timeoutId);
this.$stopCssAnimation();
if (this.smoothBlinking) {
dom.removeCssClass(this.element, "ace_smooth-blinking");
}
update(true);
if (!this.isBlinking || !this.blinkInterval || !this.isVisible) {
this.$stopCssAnimation();
return;
}
if (this.smoothBlinking) {
setTimeout(function(){
dom.addCssClass(this.element, "ace_smooth-blinking");
}.bind(this));
}
if (dom.HAS_CSS_ANIMATION) {
this.$startCssAnimation();
} else {
var blink = function(){
this.timeoutId = setTimeout(function() {
update(false);
}, 0.6 * this.blinkInterval);
}.bind(this);
this.intervalId = setInterval(function() {
update(true);
blink();
}, this.blinkInterval);
blink();
}
};
this.getPixelPosition = function(position, onScreen) {
if (!this.config || !this.session)
return {left : 0, top : 0};
if (!position)
position = this.session.selection.getCursor();
var pos = this.session.documentToScreenPosition(position);
var cursorLeft = this.$padding + (this.session.$bidiHandler.isBidiRow(pos.row, position.row)
? this.session.$bidiHandler.getPosLeft(pos.column)
: pos.column * this.config.characterWidth);
var cursorTop = (pos.row - (onScreen ? this.config.firstRowScreen : 0)) *
this.config.lineHeight;
return {left : cursorLeft, top : cursorTop};
};
this.isCursorInView = function(pixelPos, config) {
return pixelPos.top >= 0 && pixelPos.top < config.maxHeight;
};
this.update = function(config) {
this.config = config;
var selections = this.session.$selectionMarkers;
var i = 0, cursorIndex = 0;
if (selections === undefined || selections.length === 0){
selections = [{cursor: null}];
}
for (var i = 0, n = selections.length; i < n; i++) {
var pixelPos = this.getPixelPosition(selections[i].cursor, true);
if ((pixelPos.top > config.height + config.offset ||
pixelPos.top < 0) && i > 1) {
continue;
}
var element = this.cursors[cursorIndex++] || this.addCursor();
var style = element.style;
if (!this.drawCursor) {
if (!this.isCursorInView(pixelPos, config)) {
dom.setStyle(style, "display", "none");
} else {
dom.setStyle(style, "display", "block");
dom.translate(element, pixelPos.left, pixelPos.top);
dom.setStyle(style, "width", Math.round(config.characterWidth) + "px");
dom.setStyle(style, "height", config.lineHeight + "px");
}
} else {
this.drawCursor(element, pixelPos, config, selections[i], this.session);
}
}
while (this.cursors.length > cursorIndex)
this.removeCursor();
var overwrite = this.session.getOverwrite();
this.$setOverwrite(overwrite);
// cache for textarea and gutter highlight
this.$pixelPos = pixelPos;
this.restartTimer();
};
this.drawCursor = null;
this.$setOverwrite = function(overwrite) {
if (overwrite != this.overwrite) {
this.overwrite = overwrite;
if (overwrite)
dom.addCssClass(this.element, "ace_overwrite-cursors");
else
dom.removeCssClass(this.element, "ace_overwrite-cursors");
}
};
this.destroy = function() {
clearInterval(this.intervalId);
clearTimeout(this.timeoutId);
};
}).call(Cursor.prototype);
exports.Cursor = Cursor;
});