1047 lines
28 KiB
JavaScript
1047 lines
28 KiB
JavaScript
/* jslint node: true */
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'use strict';
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var View = require('./view.js').View;
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var miscUtil = require('./misc_util.js');
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var strUtil = require('./string_util.js');
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var ansi = require('./ansi_term.js');
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//var TextBuffer = require('./text_buffer.js').TextBuffer;
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var assert = require('assert');
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var _ = require('lodash');
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// :TODO: Determine CTRL-* keys for various things
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// See http://www.bbsdocumentary.com/library/PROGRAMS/GRAPHICS/ANSI/bansi.txt
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// http://wiki.synchro.net/howto:editor:slyedit#edit_mode
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// http://sublime-text-unofficial-documentation.readthedocs.org/en/latest/reference/keyboard_shortcuts_win.html
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/* Mystic
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[^B] Reformat Paragraph [^O] Show this help file
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[^I] Insert tab space [^Q] Enter quote mode
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[^K] Cut current line of text [^V] Toggle insert/overwrite
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[^U] Paste previously cut text [^Y] Delete current line
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BASIC MOVEMENT COMMANDS
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UP/^E LEFT/^S PGUP/^R HOME/^F
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DOWN/^X RIGHT/^D PGDN/^C END/^G
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*/
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//
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// Some other interesting implementations, resources, etc.
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//
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// Editors - BBS
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// * https://github.com/M-griffin/Enthral/blob/master/src/msg_fse.cpp
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//
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// Editors - Other
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// * http://joe-editor.sourceforge.net/
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// * http://www.jbox.dk/downloads/edit.c
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//
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//
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// To-Do
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//
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// * Page up/down just divide by and set top index
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// * Index pos % for emit scroll events
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// * Fix cursor when loading text
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// * Some of this shoudl be async'd where there is lots of processing (e.g. word wrap)
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var SPECIAL_KEY_MAP_DEFAULT = {
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lineFeed : [ 'return' ],
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exit : [ 'esc' ],
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backspace : [ 'backspace' ],
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del : [ 'del' ],
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tab : [ 'tab' ],
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up : [ 'up arrow' ],
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down : [ 'down arrow' ],
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end : [ 'end' ],
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home : [ 'home' ],
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left : [ 'left arrow' ],
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right : [ 'right arrow' ],
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clearLine : [ 'ctrl + y' ],
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pageUp : [ 'page up' ],
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pageDown : [ 'page down' ],
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insert : [ 'insert', 'ctrl + v' ],
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};
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exports.MultiLineEditTextView2 = MultiLineEditTextView2;
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function MultiLineEditTextView2(options) {
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if(!_.isBoolean(options.acceptsFocus)) {
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options.acceptsFocus = true;
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}
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if(!_.isBoolean(this.acceptsInput)) {
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options.acceptsInput = true;
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}
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if(!_.isObject(options.specialKeyMap)) {
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options.specialKeyMap = SPECIAL_KEY_MAP_DEFAULT;
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}
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View.call(this, options);
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var self = this;
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//
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// ANSI seems to want tabs to default to 8 characters. See the following:
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// * http://www.ansi-bbs.org/ansi-bbs2/control_chars/
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// * http://www.bbsdocumentary.com/library/PROGRAMS/GRAPHICS/ANSI/bansi.txt
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//
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// This seems overkill though, so let's default to 4 :)
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//
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this.tabWidth = _.isNumber(options.tabWidth) ? options.tabWidth : 4;
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this.textLines = [];
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this.topVisibleIndex = 0;
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//
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// cursorPos represents zero-based row, col positions
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// within the editor itself
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//
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this.cursorPos = { col : 0, row : 0 };
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this.getSGRFor = function(sgrFor) {
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return {
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text : self.getSGR(),
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}[sgrFor] || self.getSGR();
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};
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// :TODO: Most of the calls to this could be avoided via incrementRow(), decrementRow() that keeps track or such
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this.getTextLinesIndex = function(row) {
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if(!_.isNumber(row)) {
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row = self.cursorPos.row;
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}
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var index = self.topVisibleIndex + row;
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return index;
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};
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this.getRemainingLinesBelowRow = function(row) {
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if(!_.isNumber(row)) {
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row = self.cursorPos.row;
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}
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return self.textLines.length - (self.topVisibleIndex + row) - 1;
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};
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this.getNextEndOfLineIndex = function(startIndex) {
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for(var i = startIndex; i < self.textLines.length; i++) {
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if(self.textLines[i].eol) {
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return i;
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}
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}
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return self.textLines.length;
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};
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this.redrawRows = function(startRow, endRow) {
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self.client.term.write(self.getSGRFor('text') + ansi.hideCursor());
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var startIndex = self.getTextLinesIndex(startRow);
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var endIndex = Math.min(self.getTextLinesIndex(endRow), self.textLines.length);
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var absPos = self.getAbsolutePosition(startRow, 0);
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for(var i = startIndex; i < endIndex; ++i) {
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self.client.term.write(ansi.goto(absPos.row++, absPos.col));
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self.client.term.write(self.getRenderText(i));
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}
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self.client.term.write(ansi.showCursor());
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return absPos.row - self.position.row; // row we ended on
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};
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this.eraseRows = function(startRow, endRow) {
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self.client.term.write(self.getSGRFor('text') + ansi.hideCursor());
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var absPos = self.getAbsolutePosition(startRow, 0);
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var absPosEnd = self.getAbsolutePosition(endRow, 0);
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var eraseFiller = new Array(self.dimens.width).join(' ');
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while(absPos.row < absPosEnd.row) {
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self.client.term.write(ansi.goto(absPos.row++, absPos.col));
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self.client.term.write(eraseFiller);
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}
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self.client.term.write(ansi.showCursor());
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};
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this.redrawVisibleArea = function() {
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assert(self.topVisibleIndex <= self.textLines.length);
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var lastRow = self.redrawRows(0, self.dimens.height);
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self.eraseRows(lastRow, self.dimens.height);
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/*
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// :TOOD: create eraseRows(startRow, endRow)
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if(lastRow < self.dimens.height) {
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var absPos = self.getAbsolutePosition(lastRow, 0);
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var empty = new Array(self.dimens.width).join(' ');
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while(lastRow++ < self.dimens.height) {
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self.client.term.write(ansi.goto(absPos.row++, absPos.col));
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self.client.term.write(empty);
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}
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}
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*/
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};
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this.getVisibleText = function(index) {
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if(!_.isNumber(index)) {
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index = self.getTextLinesIndex();
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}
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return self.textLines[index].text.replace(/\t/g, ' ');
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};
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this.getText = function(index) {
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if(!_.isNumber(index)) {
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index = self.getTextLinesIndex();
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}
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return self.textLines.length > index ? self.textLines[index].text : '';
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};
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this.getTextLength = function(index) {
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if(!_.isNumber(index)) {
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index = self.getTextLinesIndex();
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}
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return self.textLines.length > index ? self.textLines[index].text.length : 0;
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};
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this.getCharacter = function(index, col) {
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if(!_.isNumber(col)) {
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col = self.cursorPos.col;
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}
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return self.getText(index).charAt(col);
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};
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this.getTextEndOfLineColumn = function(index) {
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return Math.max(0, self.getTextLength(index));
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};
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this.getRenderText = function(index) {
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var text = self.getVisibleText(index);
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var remain = self.dimens.width - text.length;
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if(remain > 0) {
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text += new Array(remain).join(' ');
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}
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return text;
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};
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this.getTextLines = function(startIndex, endIndex) {
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var lines;
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if(startIndex === endIndex) {
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lines = [ self.textLines[startIndex] ];
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} else {
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lines = self.textLines.slice(startIndex, endIndex + 1); // "slice extracts up to but not including end."
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}
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return lines;
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};
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this.getOutputText = function(startIndex, endIndex, includeEol) {
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var lines = self.getTextLines(startIndex, endIndex);
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//
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// Convert lines to contiguous string -- all expanded
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// tabs put back to single '\t' characters.
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//
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var text = '';
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var re = new RegExp('\\t{1,' + (self.tabWidth) + '}', 'g');
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for(var i = 0; i < lines.length; ++i) {
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text += lines[i].text.replace(re, '\t');
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if(includeEol && lines[i].eol) {
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text += '\n';
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}
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}
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return text;
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};
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this.getContiguousText = function(startIndex, endIndex, includeEol) {
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var lines = self.getTextLines(startIndex, endIndex);
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var text = '';
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for(var i = 0; i < lines.length; ++i) {
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text += lines[i].text;
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if(includeEol && lines[i].eol) {
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text += '\n';
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}
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}
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return text;
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};
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this.replaceCharacterInText = function(c, index, col) {
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self.textLines[index].text = strUtil.replaceAt(
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self.textLines[index].text, col, c);
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};
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/*
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this.editTextAtPosition = function(editAction, text, index, col) {
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switch(editAction) {
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case 'insert' :
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self.insertCharactersInText(text, index, col);
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break;
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case 'deleteForward' :
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break;
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case 'deleteBack' :
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break;
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case 'replace' :
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break;
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}
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};
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*/
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this.updateTextWordWrap = function(index) {
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var nextEolIndex = self.getNextEndOfLineIndex(index);
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var wrapped = self.wordWrapSingleLine(self.getContiguousText(index, nextEolIndex), 'tabsIntact');
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var newLines = wrapped.wrapped;
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for(var i = 0; i < newLines.length; ++i) {
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newLines[i] = { text : newLines[i] };
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}
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newLines[newLines.length - 1].eol = true;
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Array.prototype.splice.apply(
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self.textLines,
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[ index, (nextEolIndex - index) + 1 ].concat(newLines));
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return wrapped.firstWrapRange;
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};
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this.removeCharactersFromText = function(index, col, operation, count) {
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if('right' === operation) {
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self.textLines[index].text =
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self.textLines[index].text.slice(col, count) +
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self.textLines[index].text.slice(col + count);
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self.cursorPos.col -= count;
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self.updateTextWordWrap(index);
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self.redrawRows(self.cursorPos.row, self.dimens.height);
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if(0 === self.textLines[index].text) {
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} else {
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self.redrawRows(self.cursorPos.row, self.dimens.height);
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}
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} else if ('back' === operation) {
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self.textLines[index].text =
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self.textLines[index].text.slice(0, col - (count - 1)) +
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self.textLines[index].text.slice(col + 1);
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self.cursorPos.col -= (count - 1);
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self.updateTextWordWrap(index);
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self.redrawRows(self.cursorPos.row, self.dimens.height);
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if(0 === self.cursorPos.col) {
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} else {
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self.moveClientCusorToCursorPos();
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}
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} else if('line' === operation) {
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//
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// Delete a visible line. Note that this is *not* the "physical" line, or
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// 1:n entries up to eol! This is to keep consistency with home/end, and
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// some other text editors such as nano. Sublime for example want to
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// treat all of these things using the physical approach, but this seems
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// a bit odd in this context.
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//
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var hadEol = self.textLines[index].eol;
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self.textLines.splice(index, 1);
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if(hadEol && self.textLines.length > index && !self.textLines[index].eol) {
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self.textLines[index].eol = true;
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}
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//
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// Create a empty edit buffer if necessary
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// :TODO: Make this a method
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if(self.textLines.length < 1) {
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self.textLines = [ { text : '', eol : true } ];
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}
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self.cursorPos.col = 0;
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var lastRow = self.redrawRows(self.cursorPos.row, self.dimens.height);
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self.eraseRows(lastRow, self.dimens.height);
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self.moveClientCusorToCursorPos();
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}
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};
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this.insertCharactersInText = function(c, index, col) {
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self.textLines[index].text = [
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self.textLines[index].text.slice(0, col),
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c,
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self.textLines[index].text.slice(col)
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].join('');
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//self.cursorPos.col++;
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self.cursorPos.col += c.length;
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var cursorOffset;
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var absPos;
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if(self.getText(index).length >= self.dimens.width) {
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//
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// Past available space -- word wrap from current point
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// to the next EOL. Update textLines with the newly
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// formatted array.
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//
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/*
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var nextEolIndex = self.getNextEndOfLineIndex(index);
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var wrapped = self.wordWrapSingleLine(self.getContiguousText(index, nextEolIndex), 'tabsIntact');
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var newLines = wrapped.wrapped;
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//
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// If our cursor was within the bounds of the last wrapped word
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// we'll want to adjust the cursor to the same relative position
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// on the next line.
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//
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//var lastCol = self.cursorPos.col - 1;
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var lastCol = self.cursorPos.col - c.length;
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if(lastCol >= wrapped.firstWrapRange.start && lastCol <= wrapped.firstWrapRange.end) {
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cursorOffset = self.cursorPos.col - wrapped.firstWrapRange.start;
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}
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for(var i = 0; i < newLines.length; ++i) {
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newLines[i] = { text : newLines[i] };
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}
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newLines[newLines.length - 1].eol = true;
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Array.prototype.splice.apply(
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self.textLines,
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[ index, (nextEolIndex - index) + 1 ].concat(newLines));
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*/
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//
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// Update word wrapping and |cursorOffset| if the cursor
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// was within the bounds of the wrapped text
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//
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var lastCol = self.cursorPos.col - c.length;
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var firstWrapRange = self.updateTextWordWrap(index);
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if(lastCol >= firstWrapRange.start && lastCol <= firstWrapRange.end) {
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cursorOffset = self.cursorPos.col - firstWrapRange.start;
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}
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// redraw from current row to end of visible area
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self.redrawRows(self.cursorPos.row, self.dimens.height);
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if(!_.isUndefined(cursorOffset)) {
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console.log('cursorOffset=' + cursorOffset)
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self.cursorBeginOfNextLine();
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self.cursorPos.col += cursorOffset;
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self.client.term.write(ansi.right(cursorOffset));
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} else {
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absPos = self.getAbsolutePosition(self.cursorPos.row, self.cursorPos.col);
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console.log('absPos=' + JSON.stringify(absPos))
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self.client.term.write(ansi.goto(absPos.row, absPos.col));
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}
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} else {
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//
|
||
// We must only redraw from col -> end of current visible line
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//
|
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absPos = self.getAbsolutePosition(self.cursorPos.row, self.cursorPos.col);
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self.client.term.write(
|
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ansi.hideCursor() +
|
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self.getSGRFor('text') +
|
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self.getRenderText(index).slice(self.cursorPos.col - c.length) +
|
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ansi.goto(absPos.row, absPos.col) +
|
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ansi.showCursor()
|
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);
|
||
}
|
||
};
|
||
|
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this.getRemainingTabWidth = function(col) {
|
||
if(!_.isNumber(col)) {
|
||
col = self.cursorPos.col;
|
||
}
|
||
return self.tabWidth - (col % self.tabWidth);
|
||
};
|
||
|
||
this.calculateTabStops = function() {
|
||
self.tabStops = [ 0 ];
|
||
var col = 0;
|
||
while(col < self.dimens.width) {
|
||
col += self.getRemainingTabWidth(col);
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self.tabStops.push(col);
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||
}
|
||
};
|
||
|
||
this.getNextTabStop = function(col) {
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||
var i = self.tabStops.length;
|
||
while(self.tabStops[--i] > col);
|
||
return self.tabStops[++i];
|
||
};
|
||
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this.getPrevTabStop = function(col) {
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var i = self.tabStops.length;
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||
while(self.tabStops[--i] >= col);
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return self.tabStops[i];
|
||
};
|
||
|
||
this.expandTab = function(col, expandChar) {
|
||
expandChar = expandChar || ' ';
|
||
return new Array(self.getRemainingTabWidth(col)).join(expandChar);
|
||
};
|
||
|
||
this.wordWrapSingleLine = function(s, tabHandling, width) {
|
||
tabHandling = tabHandling || 'expandTabs';
|
||
if(!_.isNumber(width)) {
|
||
width = self.dimens.width;
|
||
}
|
||
|
||
//
|
||
// Notes
|
||
// * Sublime Text 3 for example considers spaces after a word
|
||
// part of said word. For example, "word " would be wraped
|
||
// in it's entirity.
|
||
//
|
||
// * Tabs in Sublime Text 3 are also treated as a word, so, e.g.
|
||
// "\t" may resolve to " " and must fit within the space.
|
||
//
|
||
// * If a word is ultimately too long to fit, break it up until it does.
|
||
//
|
||
// RegExp below is JavaScript '\s' minus the '\t'
|
||
//
|
||
var re = new RegExp(
|
||
'\t|[ \f\n\r\v\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006' +
|
||
'\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000]', 'g');
|
||
var m;
|
||
var wordStart = 0;
|
||
var results = { wrapped : [ '' ] };
|
||
var i = 0;
|
||
var word;
|
||
|
||
function addWord() {
|
||
word.match(new RegExp('.{0,' + width + '}', 'g')).forEach(function wrd(w) {
|
||
if(results.wrapped[i].length + w.length >= width) {
|
||
if(0 === i) {
|
||
results.firstWrapRange = { start : wordStart, end : wordStart + w.length };
|
||
}
|
||
results.wrapped[++i] = w;
|
||
} else {
|
||
results.wrapped[i] += w;
|
||
}
|
||
});
|
||
}
|
||
|
||
while((m = re.exec(s)) !== null) {
|
||
word = s.substring(wordStart, re.lastIndex - 1);
|
||
|
||
switch(m[0].charAt(0)) {
|
||
case ' ' :
|
||
word += m[0];
|
||
break;
|
||
|
||
case '\t' :
|
||
//
|
||
// Expand tab given position
|
||
//
|
||
// Nice info here: http://c-for-dummies.com/blog/?p=424
|
||
//
|
||
if('expandTabs' === tabHandling) {
|
||
word += self.expandTab(results.wrapped[i].length + word.length, '\t') + '\t';
|
||
} else {
|
||
word += m[0];
|
||
}
|
||
break;
|
||
}
|
||
|
||
addWord();
|
||
wordStart = re.lastIndex + m[0].length - 1;
|
||
}
|
||
|
||
//
|
||
// Remainder
|
||
//
|
||
word = s.substring(wordStart);
|
||
addWord();
|
||
|
||
return results;
|
||
};
|
||
|
||
// :TODO: rename to insertRawText()
|
||
this.insertRawText = function(text, index, col) {
|
||
//
|
||
// Perform the following on |text|:
|
||
// * Normalize various line feed formats -> \n
|
||
// * Remove some control characters (e.g. \b)
|
||
// * Word wrap lines such that they fit in the visible workspace.
|
||
// Each actual line will then take 1:n elements in textLines[].
|
||
// * Each tab will be appropriately expanded and take 1:n \t
|
||
// characters. This allows us to know when we're in tab space
|
||
// when doing cursor movement/etc.
|
||
//
|
||
//
|
||
// Try to handle any possible newline that can be fed to us.
|
||
// See http://stackoverflow.com/questions/5034781/js-regex-to-split-by-line
|
||
//
|
||
// :TODO: support index/col insertion point
|
||
|
||
if(_.isNumber(index)) {
|
||
if(_.isNumber(col)) {
|
||
//
|
||
// Modify text to have information from index
|
||
// before and and after column
|
||
//
|
||
// :TODO: Need to clean this string (e.g. collapse tabs)
|
||
text = self.textLines
|
||
|
||
// :TODO: Remove original line @ index
|
||
}
|
||
} else {
|
||
index = self.textLines.length;
|
||
}
|
||
|
||
text = text
|
||
.replace(/\b/g, '')
|
||
.split(/\r\n|[\n\v\f\r\x85\u2028\u2029]/g);
|
||
|
||
var wrapped;
|
||
|
||
for(var i = 0; i < text.length; ++i) {
|
||
wrapped = self.wordWrapSingleLine(text[i], 'expandTabs', self.dimens.width).wrapped;
|
||
|
||
for(var j = 0; j < wrapped.length - 1; ++j) {
|
||
self.textLines.splice(index++, 0, { text : wrapped[j] } );
|
||
}
|
||
self.textLines.splice(index++, 0, { text : wrapped[wrapped.length - 1], eol : true });
|
||
}
|
||
};
|
||
|
||
this.getAbsolutePosition = function(row, col) {
|
||
return {
|
||
row : self.position.row + row,
|
||
col : self.position.col + col,
|
||
};
|
||
};
|
||
|
||
this.moveClientCusorToCursorPos = function() {
|
||
var absPos = self.getAbsolutePosition(self.cursorPos.row, self.cursorPos.col);
|
||
self.client.term.write(ansi.goto(absPos.row, absPos.col));
|
||
};
|
||
|
||
|
||
this.keyPressCharacter = function(c) {
|
||
var index = self.getTextLinesIndex();
|
||
|
||
//
|
||
// :TODO: stuff that needs to happen
|
||
// * Break up into smaller methods
|
||
// * Even in overtype mode, word wrapping must apply if past bounds
|
||
// * A lot of this can be used for backspacing also
|
||
// * See how Sublime treats tabs in *non* overtype mode... just overwrite them?
|
||
//
|
||
//
|
||
|
||
if(self.overtypeMode) {
|
||
// :TODO: special handing for insert over eol mark?
|
||
self.replaceCharacterInText(c, index, self.cursorPos.col);
|
||
self.cursorPos.col++;
|
||
self.client.term.write(c);
|
||
} else {
|
||
self.insertCharactersInText(c, index, self.cursorPos.col);
|
||
|
||
/*if(self.cursorPos.col >= self.dimens.width) {
|
||
console.log('next line')
|
||
self.cursorBeginOfNextLine();
|
||
//self.client.term.write(ansi.right(cursorOffset))
|
||
}*/
|
||
}
|
||
|
||
};
|
||
|
||
this.keyPressUp = function() {
|
||
if(self.cursorPos.row > 0) {
|
||
self.cursorPos.row--;
|
||
self.client.term.write(ansi.up());
|
||
|
||
if(!self.adjustCursorToNextTab('up')) {
|
||
self.adjustCursorIfPastEndOfLine(false);
|
||
}
|
||
} else {
|
||
self.scrollDocumentDown();
|
||
self.adjustCursorIfPastEndOfLine(true);
|
||
}
|
||
};
|
||
|
||
this.keyPressDown = function() {
|
||
var lastVisibleRow = Math.min(self.dimens.height, self.textLines.length) - 1;
|
||
if(self.cursorPos.row < lastVisibleRow) {
|
||
self.cursorPos.row++;
|
||
self.client.term.write(ansi.down());
|
||
|
||
if(!self.adjustCursorToNextTab('down')) {
|
||
self.adjustCursorIfPastEndOfLine(false);
|
||
}
|
||
} else {
|
||
self.scrollDocumentUp();
|
||
self.adjustCursorIfPastEndOfLine(true);
|
||
}
|
||
};
|
||
|
||
this.keyPressLeft = function() {
|
||
if(self.cursorPos.col > 0) {
|
||
var prevChar = self.getCharacter();
|
||
|
||
self.cursorPos.col--;
|
||
self.client.term.write(ansi.left());
|
||
|
||
if('\t' === prevChar) {
|
||
self.adjustCursorToNextTab('left');
|
||
}
|
||
} else {
|
||
self.cursorEndOfPreviousLine();
|
||
}
|
||
};
|
||
|
||
this.keyPressRight = function() {
|
||
var eolColumn = self.getTextEndOfLineColumn();
|
||
if(self.cursorPos.col < eolColumn) {
|
||
var prevChar = self.getCharacter();
|
||
|
||
self.cursorPos.col++;
|
||
self.client.term.write(ansi.right());
|
||
|
||
if('\t' === prevChar) {
|
||
self.adjustCursorToNextTab('right');
|
||
}
|
||
} else {
|
||
self.cursorBeginOfNextLine();
|
||
}
|
||
};
|
||
|
||
this.keyPressHome = function() {
|
||
var firstNonWhitespace = self.getVisibleText().search(/\S/);
|
||
if(-1 !== firstNonWhitespace) {
|
||
self.cursorPos.col = firstNonWhitespace;
|
||
} else {
|
||
self.cursorPos.col = 0;
|
||
}
|
||
console.log('"' + self.getVisibleText() + '"')
|
||
self.moveClientCusorToCursorPos();
|
||
};
|
||
|
||
this.keyPressEnd = function() {
|
||
self.cursorPos.col = self.getTextEndOfLineColumn();
|
||
self.moveClientCusorToCursorPos();
|
||
};
|
||
|
||
this.keyPressPageUp = function() {
|
||
|
||
};
|
||
|
||
this.keyPressPageDown = function() {
|
||
|
||
};
|
||
|
||
this.keyPressLineFeed = function() {
|
||
//
|
||
// Break up text from cursor position, redraw, and update cursor
|
||
// position to start of next line
|
||
//
|
||
var index = self.getTextLinesIndex();
|
||
var nextEolIndex = self.getNextEndOfLineIndex(index);
|
||
var text = self.getContiguousText(index, nextEolIndex);
|
||
var newLines = self.wordWrapSingleLine(text.slice(self.cursorPos.col), 'tabsIntact').wrapped;
|
||
|
||
newLines.unshift( { text : text.slice(0, self.cursorPos.col), eol : true } );
|
||
for(var i = 1; i < newLines.length; ++i) {
|
||
newLines[i] = { text : newLines[i] };
|
||
}
|
||
newLines[newLines.length - 1].eol = true;
|
||
|
||
Array.prototype.splice.apply(
|
||
self.textLines,
|
||
[ index, (nextEolIndex - index) + 1 ].concat(newLines));
|
||
|
||
// redraw from current row to end of visible area
|
||
self.redrawRows(self.cursorPos.row, self.dimens.height);
|
||
self.cursorBeginOfNextLine();
|
||
};
|
||
|
||
this.keyPressInsert = function() {
|
||
// :TODO: emit event
|
||
self.overtypeMode = !self.overtypeMode;
|
||
};
|
||
|
||
this.keyPressTab = function() {
|
||
var index = self.getTextLinesIndex();
|
||
self.insertCharactersInText(self.expandTab(self.cursorPos.col, '\t') + '\t', index, self.cursorPos.col);
|
||
};
|
||
|
||
this.keyPressBackspace = function() {
|
||
if(self.cursorPos.col > 1) {
|
||
//
|
||
// Don't want to delete character at cursor, but rather the character
|
||
// to the left of the cursor!
|
||
//
|
||
self.cursorPos.col -= 1;
|
||
|
||
var index = self.getTextLinesIndex();
|
||
var count;
|
||
|
||
if('\t' === self.getCharacter(index, self.cursorPos.col)) {
|
||
console.log('backspace tab')
|
||
// :TODO: This isn't right... need to find how many up to count to actually remove
|
||
// up to prev backspace position, but stop on any non '\t'
|
||
|
||
var col = self.cursorPos.col;
|
||
var prevTabStop = self.getPrevTabStop(self.cursorPos.col);
|
||
while(col >= prevTabStop) {
|
||
if('\t' !== self.getCharacter(index, col)) {
|
||
break;
|
||
}
|
||
--col;
|
||
}
|
||
|
||
count = (self.cursorPos.col - col);
|
||
|
||
console.log('count=' + count)
|
||
|
||
//count = (self.cursorPos.col - self.getPrevTabStop(self.cursorPos.col));
|
||
} else {
|
||
count = 1;
|
||
}
|
||
|
||
self.removeCharactersFromText(
|
||
index,
|
||
self.cursorPos.col,
|
||
'back',
|
||
count);
|
||
}
|
||
};
|
||
|
||
this.keyPressDel = function() {
|
||
self.removeCharactersFromText(
|
||
self.getTextLinesIndex(),
|
||
self.cursorPos.col,
|
||
'right',
|
||
1);
|
||
};
|
||
|
||
this.keyPressClearLine = function() {
|
||
if(self.textLines.length > 0) {
|
||
self.removeCharactersFromText(
|
||
self.getTextLinesIndex(),
|
||
0,
|
||
'line');
|
||
}
|
||
};
|
||
|
||
this.adjustCursorIfPastEndOfLine = function(forceUpdate) {
|
||
var eolColumn = self.getTextEndOfLineColumn();
|
||
if(self.cursorPos.col > eolColumn) {
|
||
self.cursorPos.col = eolColumn;
|
||
forceUpdate = true;
|
||
}
|
||
|
||
if(forceUpdate) {
|
||
self.moveClientCusorToCursorPos();
|
||
}
|
||
};
|
||
|
||
this.adjustCursorToNextTab = function(direction) {
|
||
if('\t' === self.getCharacter()) {
|
||
var move;
|
||
switch(direction) {
|
||
//
|
||
// Next tabstop to the right
|
||
//
|
||
case 'right' :
|
||
move = self.getNextTabStop(self.cursorPos.col) - self.cursorPos.col;
|
||
self.cursorPos.col += move;
|
||
self.client.term.write(ansi.right(move));
|
||
break;
|
||
|
||
//
|
||
// Next tabstop to the left
|
||
//
|
||
case 'left' :
|
||
move = self.cursorPos.col - self.getPrevTabStop(self.cursorPos.col);
|
||
self.cursorPos.col -= move;
|
||
self.client.term.write(ansi.left(move));
|
||
break;
|
||
|
||
case 'up' :
|
||
case 'down' :
|
||
//
|
||
// Jump to the tabstop nearest the cursor
|
||
//
|
||
var newCol = self.tabStops.reduce(function r(prev, curr) {
|
||
return (Math.abs(curr - self.cursorPos.col) < Math.abs(prev - self.cursorPos.col) ? curr : prev);
|
||
});
|
||
|
||
if(newCol > self.cursorPos.col) {
|
||
move = newCol - self.cursorPos.col;
|
||
self.cursorPos.col += move;
|
||
self.client.term.write(ansi.right(move));
|
||
} else if(newCol < self.cursorPos.col) {
|
||
move = self.cursorPos.col - newCol;
|
||
self.cursorPos.col -= move;
|
||
self.client.term.write(ansi.left(move));
|
||
}
|
||
break;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
return false; // did not fall on a tab
|
||
};
|
||
|
||
this.cursorStartOfDocument = function() {
|
||
self.topVisibleIndex = 0;
|
||
self.cursorPos = { row : 0, col : 0 };
|
||
|
||
self.redraw();
|
||
self.moveClientCusorToCursorPos();
|
||
};
|
||
|
||
this.cursorEndOfDocument = function() {
|
||
self.topVisibleIndex = Math.max(self.textLines.length - self.dimens.height, 0);
|
||
self.cursorPos.row = (self.textLines.length - self.topVisibleIndex) - 1;
|
||
self.cursorPos.col = self.getTextEndOfLineColumn();
|
||
|
||
self.redraw();
|
||
self.moveClientCusorToCursorPos();
|
||
};
|
||
|
||
this.cursorBeginOfNextLine = function() {
|
||
// e.g. when scrolling right past eol
|
||
var linesBelow = self.getRemainingLinesBelowRow();
|
||
|
||
if(linesBelow > 0) {
|
||
var lastVisibleRow = Math.min(self.dimens.height, self.textLines.length) - 1;
|
||
if(self.cursorPos.row < lastVisibleRow) {
|
||
self.cursorPos.row++;
|
||
} else {
|
||
self.scrollDocumentUp();
|
||
}
|
||
self.keyPressHome(); // same as pressing 'home'
|
||
}
|
||
};
|
||
|
||
this.cursorEndOfPreviousLine = function() {
|
||
// e.g. when scrolling left past start of line
|
||
var moveToEnd;
|
||
if(self.cursorPos.row > 0) {
|
||
self.cursorPos.row--;
|
||
moveToEnd = true;
|
||
} else if(self.topVisibleIndex > 0) {
|
||
self.scrollDocumentDown();
|
||
moveToEnd = true;
|
||
}
|
||
|
||
if(moveToEnd) {
|
||
self.keyPressEnd(); // same as pressing 'end'
|
||
}
|
||
};
|
||
|
||
/*
|
||
this.cusorEndOfNextLine = function() {
|
||
var linesBelow = self.getRemainingLinesBelowRow();
|
||
|
||
if(linesBelow > 0) {
|
||
var lastVisibleRow = Math.min(self.dimens.height, self.textLines.length) - 1;
|
||
if(self.cursorPos.row < lastVisibleRow) {
|
||
self.cursorPos.row++;
|
||
} else {
|
||
self.scrollDocumentUp();
|
||
}
|
||
self.keyPressEnd(); // same as pressing 'end'
|
||
}
|
||
};
|
||
*/
|
||
|
||
this.scrollDocumentUp = function() {
|
||
//
|
||
// Note: We scroll *up* when the cursor goes *down* beyond
|
||
// the visible area!
|
||
//
|
||
var linesBelow = self.getRemainingLinesBelowRow();
|
||
if(linesBelow > 0) {
|
||
self.topVisibleIndex++;
|
||
self.redraw();
|
||
}
|
||
};
|
||
|
||
this.scrollDocumentDown = function() {
|
||
//
|
||
// Note: We scroll *down* when the cursor goes *up* beyond
|
||
// the visible area!
|
||
//
|
||
if(self.topVisibleIndex > 0) {
|
||
self.topVisibleIndex--;
|
||
self.redraw();
|
||
}
|
||
};
|
||
|
||
}
|
||
|
||
require('util').inherits(MultiLineEditTextView2, View);
|
||
|
||
MultiLineEditTextView2.prototype.setWidth = function(width) {
|
||
MultiLineEditTextView2.super_.prototype.setWidth.call(this, width);
|
||
|
||
this.calculateTabStops();
|
||
};
|
||
|
||
MultiLineEditTextView2.prototype.redraw = function() {
|
||
MultiLineEditTextView2.super_.prototype.redraw.call(this);
|
||
|
||
this.redrawVisibleArea();
|
||
};
|
||
|
||
MultiLineEditTextView2.prototype.setFocus = function(focused) {
|
||
this.client.term.write(this.getSGRFor('text'));
|
||
|
||
MultiLineEditTextView2.super_.prototype.setFocus.call(this, focused);
|
||
};
|
||
|
||
MultiLineEditTextView2.prototype.setText = function(text) {
|
||
this.textLines = [ { text : '', eol : true } ];
|
||
//text = "Tab:\r\n\tA\tB\tC\tD\tE\tF\tG\r\n reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeally long word!!!";
|
||
text = require('fs').readFileSync('/home/bashby/Downloads/test_text.txt', { encoding : 'utf-8'});
|
||
|
||
//this.insertRawText(text);//, 0, 0);
|
||
this.cursorEndOfDocument();
|
||
console.log(this.textLines)
|
||
|
||
|
||
};
|
||
|
||
var HANDLED_SPECIAL_KEYS = [
|
||
'up', 'down', 'left', 'right',
|
||
'home', 'end',
|
||
'pageUp', 'pageDown',
|
||
'lineFeed',
|
||
'insert',
|
||
'tab',
|
||
'backspace', 'del',
|
||
'clearLine',
|
||
];
|
||
|
||
MultiLineEditTextView2.prototype.onKeyPress = function(ch, key) {
|
||
var self = this;
|
||
var handled;
|
||
|
||
if(key) {
|
||
HANDLED_SPECIAL_KEYS.forEach(function aKey(specialKey) {
|
||
if(self.isSpecialKeyMapped(specialKey, key.name)) {
|
||
self[_.camelCase('keyPress ' + specialKey)]();
|
||
handled = true;
|
||
}
|
||
});
|
||
}
|
||
|
||
if(ch && strUtil.isPrintable(ch)) {
|
||
this.keyPressCharacter(ch);
|
||
}
|
||
|
||
if(!handled) {
|
||
MultiLineEditTextView2.super_.prototype.onKeyPress.call(this, ch, key);
|
||
}
|
||
};
|