* Start (mostly placeholder) for MultiLineEditTextView

core/multi_line_edit_text_view.js

@@ -0,0 +1,98 @@
+/* jslint node: true */
+'use strict';
+
+var View			= require('./view.js').View;
+var miscUtil		= require('./misc_util.js');
+var strUtil			= require('./string_util.js');
+var ansi			= require('./ansi_term.js');
+
+var assert			= require('assert');
+var _				= require('lodash');
+
+exports.MultiLineEditTextView	= MultiLineEditTextView;
+
+//
+//	Some resources & comparisons
+//	
+//	Enthral
+//		* https://github.com/M-griffin/Enthral/blob/master/src/msg_fse.cpp
+//	
+//	x84
+//		* https://github.com/jquast/x84/blob/master/x84/bbs/editor.py
+//
+//	
+
+function MultiLineEditTextView(options) {
+	View.call(this, options);
+
+	var self = this;
+
+	this.lines			= [];	//	a given line is text...until EOL
+	this.topLineIndex	= 0;
+
+	this.drawViewableText = function() {
+		//
+		//	v--- position.x/y
+		//	+-----------------------------------+ <--- x + width
+		//	|                                   |
+		//	|                                   |
+		//	|                                   |
+		//	+-----------------------------------+
+		//	^--- position.y + height
+		//
+		//	A given line in lines[] may need to take up 1:n physical lines
+		//	due to wrapping / available space.
+		//
+		var x = self.position.x;
+		var bottom = x + self.dimens.height;
+		var lines;
+		var idx = self.topLineIndex;
+
+		self.client.term.write(self.getSGR());
+
+		while(x < bottom) {
+			lines = self.getWordWrapLines(self.lines[idx]);
+			for(var y = 0; y < lines.length && x < bottom; ++y) {
+				self.client.term.write(ansi.goto(x, this.position.y));
+				self.client.term.write(lines[y]);
+				++x;
+			}
+		}
+
+	};
+
+	this.getWordWrapLines = function(line) {
+		//
+		//	Similar implementations:
+		//	* http://blog.macromates.com/2006/wrapping-text-with-regular-expressions/
+		//	* http://james.padolsey.com/snippets/wordwrap-for-javascript/
+		//	* http://phpjs.org/functions/wordwrap/
+		//	* https://github.com/jonschlinkert/word-wrap
+		//
+		/*
+		var re = new RegExp(
+			'(.{1,' + self.dimens.width + '}(\\s|$)|.{' + self.dimens.width + '}|.+$)', 
+			'g');
+		*/
+
+		var re = new RegExp('.{1,' + self.dimens.width + '}(\\s+|$)|\\S+?(\\s+|$)', 'g');
+
+		//return line.split(re);
+		return line.match(re) || [];
+	};
+}
+
+require('util').inherits(MultiLineEditTextView, View);
+
+MultiLineEditTextView.prototype.redraw = function() {
+	MultiLineEditTextView.super_.prototype.redraw.call(this);
+
+	this.drawViewableText();
+}
+
+MultiLineEditTextView.prototype.setText = function(text) {
+	//	:TODO: text.split(/\r\n|\n|\r/))
+	this.lines = text.split(/\r?\n/);
+}
+
+