ace/lib/ace/layer/gutter.js
2012-10-15 17:14:29 +04:00

221 lines
8.2 KiB
JavaScript

/* ***** 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 oop = require("../lib/oop");
var lang = require("../lib/lang");
var EventEmitter = require("../lib/event_emitter").EventEmitter;
var Gutter = function(parentEl) {
this.element = dom.createElement("div");
this.element.className = "ace_layer ace_gutter-layer";
parentEl.appendChild(this.element);
this.setShowFoldWidgets(this.$showFoldWidgets);
this.gutterWidth = 0;
this.$annotations = [];
this.$updateAnnotations = this.$updateAnnotations.bind(this);
};
(function() {
oop.implement(this, EventEmitter);
this.setSession = function(session) {
if (this.session)
this.session.removeEventListener("change", this.$updateAnnotations);
this.session = session;
session.on("change", this.$updateAnnotations);
};
this.addGutterDecoration = function(row, className){
if (window.console)
console.warn && console.warn("deprecated use session.addGutterDecoration");
this.session.addGutterDecoration(row, className);
};
this.removeGutterDecoration = function(row, className){
if (window.console)
console.warn && console.warn("deprecated use session.removeGutterDecoration");
this.session.removeGutterDecoration(row, className);
};
this.setAnnotations = function(annotations) {
// iterate over sparse array
this.$annotations = []
var rowInfo, row;
for (var i = 0; i < annotations.length; i++) {
var annotation = annotations[i];
var row = annotation.row;
var rowInfo = this.$annotations[row];
if (!rowInfo)
rowInfo = this.$annotations[row] = {text: []};
var annoText = annotation.text;
annoText = annoText ? lang.escapeHTML(annoText) : annotation.html || "";
if (rowInfo.text.indexOf(annoText) === -1)
rowInfo.text.push(annoText);
var type = annotation.type;
if (type == "error")
rowInfo.className = " ace_error";
else if (type == "warning" && rowInfo.className != " ace_error")
rowInfo.className = " ace_warning";
else if (type == "info" && (!rowInfo.className))
rowInfo.className = " ace_info";
}
};
this.$updateAnnotations = function (e) {
if (!this.$annotations.length)
return;
var delta = e.data;
var range = delta.range;
var firstRow = range.start.row;
var len = range.end.row - firstRow;
if (len === 0) {
// do nothing
} else if (delta.action == "removeText" || delta.action == "removeLines") {
this.$annotations.splice(firstRow, len + 1, null);
} else {
var args = Array(len + 1);
args.unshift(firstRow, 1);
this.$annotations.splice.apply(this.$annotations, args);
}
};
this.update = function(config) {
var emptyAnno = {className: ""};
var html = [];
var i = config.firstRow;
var lastRow = config.lastRow;
var fold = this.session.getNextFoldLine(i);
var foldStart = fold ? fold.start.row : Infinity;
var foldWidgets = this.$showFoldWidgets && this.session.foldWidgets;
var breakpoints = this.session.$breakpoints;
var decorations = this.session.$decorations;
var lastLineNumber = 0;
while (true) {
if(i > foldStart) {
i = fold.end.row + 1;
fold = this.session.getNextFoldLine(i, fold);
foldStart = fold ?fold.start.row :Infinity;
}
if(i > lastRow)
break;
var annotation = this.$annotations[i] || emptyAnno;
html.push(
"<div class='ace_gutter-cell ",
breakpoints[i] || "", decorations[i] || "", annotation.className,
"' style='height:", this.session.getRowLength(i) * config.lineHeight, "px;'>",
lastLineNumber = i + 1
);
if (foldWidgets) {
var c = foldWidgets[i];
// check if cached value is invalidated and we need to recompute
if (c == null)
c = foldWidgets[i] = this.session.getFoldWidget(i);
if (c)
html.push(
"<span class='ace_fold-widget ace_", c,
c == "start" && i == foldStart && i < fold.end.row ? " ace_closed" : " ace_open",
"' style='height:", config.lineHeight, "px",
"'></span>"
);
}
html.push("</div>");
i++;
}
this.element = dom.setInnerHtml(this.element, html.join(""));
this.element.style.height = config.minHeight + "px";
if (this.session.$useWrapMode)
lastLineNumber = this.session.getLength();
var gutterWidth = ("" + lastLineNumber).length * config.characterWidth;
var padding = this.$padding || this.$computePadding();
gutterWidth += padding.left + padding.right;
if (gutterWidth !== this.gutterWidth) {
this.gutterWidth = gutterWidth;
this.element.style.width = Math.ceil(this.gutterWidth) + "px";
this._emit("changeGutterWidth", gutterWidth);
}
};
this.$showFoldWidgets = true;
this.setShowFoldWidgets = function(show) {
if (show)
dom.addCssClass(this.element, "ace_folding-enabled");
else
dom.removeCssClass(this.element, "ace_folding-enabled");
this.$showFoldWidgets = show;
this.$padding = null;
};
this.getShowFoldWidgets = function() {
return this.$showFoldWidgets;
};
this.$computePadding = function() {
if (!this.element.firstChild)
return {left: 0, right: 0};
var style = dom.computedStyle(this.element.firstChild);
this.$padding = {}
this.$padding.left = parseInt(style.paddingLeft) + 1;
this.$padding.right = parseInt(style.paddingRight);
return this.$padding;
};
this.getRegion = function(point) {
var padding = this.$padding || this.$computePadding();
var rect = this.element.getBoundingClientRect();
if (point.x < padding.left + rect.left)
return "markers";
if (this.$showFoldWidgets && point.x > rect.right - padding.right)
return "foldWidgets";
};
}).call(Gutter.prototype);
exports.Gutter = Gutter;
});