📄 webprinter.jsc
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# language: JSVM2
/**
* @fileoverview js.io.WebPrinter class {@link http://jsvm.org/}
* @file WebPrinter.jsc
* @author Wan Changhua * @version 2.01, 10/23/05 * @since JSVM2.0
*/
package js.io;
import js.lang.BObject;
import js.lang.System;
import js.dom.Window;
/** * Create a new WebPrinter instance.
* Inherit from BObject
* @author Wan Changhua * @version 2.01, 10/23/05 * @extends BObject * @class js.io.WebPrinter is a class that is a Web Printer
* @constructor
* @requires Window * @throws NotSupportException if platform is not a browser * @return A new WebPrinter
* @see BObject js.lang.BObject is the base class for this */
class WebPrinter extends BObject ()
{
/*
* @private
*/
var ds = WebPrinter.defaultStyle;
/**
* The Output-Window.
* @private * @type Window */
this.outputWindow = new Window("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"><title>"
+ "Web Printer</title>"
+ "<script>var owner=null;function write(s){"
+ (System.isIeBrowser() ? "document.body.insertAdjacentHTML(\"beforeEnd\", s);" : "document.body.innerHTML+=s;")
+ "setTimeout(\"document.body.scrollTop=document.body.scrollHeight;\",10);}"
+ "function clear(){document.body.innerHTML=\"\";}"
+ "document.onkeydown=function(){if(event.keyCode==116||(event.ctrlKey&&event.keyCode==78))"
+ "{event.keyCode=0;event.returnValue = false;}}"
+ "</script></head><body style=\"" + ds.style + "\""
+ " scroll=\"auto\"></body></html>");
this.outputWindow.printer = this;
this.outputWindow.width = ds.width;
this.outputWindow.height = ds.height;
this.outputWindow.resizable = ds.resizable;
this.outputWindow.scrollbars = ds.scrollbars;
this.outputWindow.status = ds.status;
}
/** * WebPrinter default-style Object
* @type Object */
WebPrinter.defaultStyle =
{
style : "background-color:white;color:black;font-family:MS Sans Serif;font-size:12px;",
width : 640,
height : 480,
resizable : 1,
status : 0,
scrollbars : "yes"
};
/** * The content of this Output-Window. * @type String */
WebPrinter.prototype.prompt = "";
/** * Show Output-Window. * @see Window#show */
WebPrinter.prototype.showOutputWindow = function()
{
if (!this.outputWindow.isActive())
{
this.outputWindow.show();
if (this.prompt != "")
{
this.outputWindow.handle.write(this.prompt);
}
}
}
/** * Close Output-Window. * @see Window#close */
WebPrinter.prototype.closeOutputWindow = function()
{
this.outputWindow.close();
}
/** * Print string in Output-Window.
* @param {String} s The content to print * @see Window#write */
WebPrinter.prototype.write = function(s)
{
this.showOutputWindow();
this.outputWindow.handle.write(String(s));
}
/** * Print htmlEncoded-String in Output-Window.
* @param {String} s The content to print * @see Window#write */
WebPrinter.prototype.print = function(s)
{
s = encodeHTML(String(s));
this.write(s);
}
/** * Print htmlEncoded-String as a line in Output-Window.
* @param {String} s The content to print * @see #print */
WebPrinter.prototype.println = function(s)
{
this.print(s + "\r\n");
}
/** * Print an exception in Output-Window.
* @param {Error} ex The exception to print * @see #write */
WebPrinter.prototype.printError = function(ex)
{
this.write("<XMP style=\"color:red\">" + ex + "</XMP>");
}
/** * Print html in Output-Window.
* @param {String} s The html to print * @see #write */
WebPrinter.prototype.printHTML = function(s)
{
this.write(String(s));
}
/** * Clear Output-Window content
* @see Window#clear */
WebPrinter.prototype.clear = function()
{
if (this.outputWindow.isActive())
{
this.outputWindow.handle.clear();
}
}
/** * destroy
* @see Window#destroy */
WebPrinter.prototype.close = function()
{
this.outputWindow.close();
}
/** * Encode as HTML * @private * @type String */
var encodeHTML = function (s)
{
return s.replace(/&/g, "&")
.replace(/"/g, """)
.replace(/</g, "<")
.replace(/>/g, ">")
.replace(/\r\n/g, "<br />")
.replace(/\t/g, " ");
}⌨️ 快捷键说明
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