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marker.js
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marker.js
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/* ***** 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 Range = require("../range").Range;
var dom = require("../lib/dom");
var Marker = function(parentEl) {
this.element = dom.createElement("div");
this.element.className = "ace_layer ace_marker-layer";
parentEl.appendChild(this.element);
};
(function() {
this.$padding = 0;
this.setPadding = function(padding) {
this.$padding = padding;
};
this.setSession = function(session) {
this.session = session;
};
this.setMarkers = function(markers) {
this.markers = markers;
};
this.update = function(config) {
var config = config || this.config;
if (!config)
return;
this.config = config;
var html = [];
for (var key in this.markers) {
var marker = this.markers[key];
if (!marker.range) {
marker.update(html, this, this.session, config);
continue;
}
var range = marker.range.clipRows(config.firstRow, config.lastRow);
if (range.isEmpty()) continue;
range = range.toScreenRange(this.session);
if (marker.renderer) {
var top = this.$getTop(range.start.row, config);
var left = this.$padding + range.start.column * config.characterWidth;
marker.renderer(html, range, left, top, config);
} else if (marker.type == "fullLine") {
this.drawFullLineMarker(html, range, marker.clazz, config);
} else if (marker.type == "screenLine") {
this.drawScreenLineMarker(html, range, marker.clazz, config);
} else if (range.isMultiLine()) {
if (marker.type == "text")
this.drawTextMarker(html, range, marker.clazz, config);
else
this.drawMultiLineMarker(html, range, marker.clazz, config);
} else {
this.drawSingleLineMarker(html, range, marker.clazz + " ace_start", config);
}
}
this.element.innerHTML = html.join("");
};
this.$getTop = function(row, layerConfig) {
return (row - layerConfig.firstRowScreen) * layerConfig.lineHeight;
};
// Draws a marker, which spans a range of text on multiple lines
this.drawTextMarker = function(stringBuilder, range, clazz, layerConfig, extraStyle) {
// selection start
var row = range.start.row;
var lineRange = new Range(
row, range.start.column,
row, this.session.getScreenLastRowColumn(row)
);
this.drawSingleLineMarker(stringBuilder, lineRange, clazz + " ace_start", layerConfig, 1, extraStyle);
// selection end
row = range.end.row;
lineRange = new Range(row, 0, row, range.end.column);
this.drawSingleLineMarker(stringBuilder, lineRange, clazz, layerConfig, 0, extraStyle);
for (row = range.start.row + 1; row < range.end.row; row++) {
lineRange.start.row = row;
lineRange.end.row = row;
lineRange.end.column = this.session.getScreenLastRowColumn(row);
this.drawSingleLineMarker(stringBuilder, lineRange, clazz, layerConfig, 1, extraStyle);
}
};
// Draws a multi line marker, where lines span the full width
this.drawMultiLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
// from selection start to the end of the line
var padding = this.$padding;
var height = config.lineHeight;
var top = this.$getTop(range.start.row, config);
var left = padding + range.start.column * config.characterWidth;
extraStyle = extraStyle || "";
stringBuilder.push(
"<div class='", clazz, " ace_start' style='",
"height:", height, "px;",
"right:0;",
"top:", top, "px;",
"left:", left, "px;", extraStyle, "'></div>"
);
// from start of the last line to the selection end
top = this.$getTop(range.end.row, config);
var width = range.end.column * config.characterWidth;
stringBuilder.push(
"<div class='", clazz, "' style='",
"height:", height, "px;",
"width:", width, "px;",
"top:", top, "px;",
"left:", padding, "px;", extraStyle, "'></div>"
);
// all the complete lines
height = (range.end.row - range.start.row - 1) * config.lineHeight;
if (height < 0)
return;
top = this.$getTop(range.start.row + 1, config);
stringBuilder.push(
"<div class='", clazz, "' style='",
"height:", height, "px;",
"right:0;",
"top:", top, "px;",
"left:", padding, "px;", extraStyle, "'></div>"
);
};
// Draws a marker which covers part or whole width of a single screen line
this.drawSingleLineMarker = function(stringBuilder, range, clazz, config, extraLength, extraStyle) {
var height = config.lineHeight;
var width = (range.end.column + (extraLength || 0) - range.start.column) * config.characterWidth;
var top = this.$getTop(range.start.row, config);
var left = this.$padding + range.start.column * config.characterWidth;
stringBuilder.push(
"<div class='", clazz, "' style='",
"height:", height, "px;",
"width:", width, "px;",
"top:", top, "px;",
"left:", left, "px;", extraStyle || "", "'></div>"
);
};
this.drawFullLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
var top = this.$getTop(range.start.row, config);
var height = config.lineHeight;
if (range.start.row != range.end.row)
height += this.$getTop(range.end.row, config) - top;
stringBuilder.push(
"<div class='", clazz, "' style='",
"height:", height, "px;",
"top:", top, "px;",
"left:0;right:0;", extraStyle || "", "'></div>"
);
};
this.drawScreenLineMarker = function(stringBuilder, range, clazz, config, extraStyle) {
var top = this.$getTop(range.start.row, config);
var height = config.lineHeight;
stringBuilder.push(
"<div class='", clazz, "' style='",
"height:", height, "px;",
"top:", top, "px;",
"left:0;right:0;", extraStyle || "", "'></div>"
);
};
}).call(Marker.prototype);
exports.Marker = Marker;
});