enigma-bbs/core/text_view.js

205 lines
6.4 KiB
JavaScript
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/* jslint node: true */
'use strict';
// ENiGMA½
const View = require('./view.js').View;
const miscUtil = require('./misc_util.js');
const ansi = require('./ansi_term.js');
const padStr = require('./string_util.js').pad;
const stylizeString = require('./string_util.js').stylizeString;
const renderSubstr = require('./string_util.js').renderSubstr;
const renderStringLength = require('./string_util.js').renderStringLength;
const pipeToAnsi = require('./color_codes.js').pipeToAnsi;
const stripAllLineFeeds = require('./string_util.js').stripAllLineFeeds;
const getPredefinedMCIFormatObject =
require('./predefined_mci').getPredefinedMCIFormatObject;
const stringFormat = require('./string_format');
// deps
const util = require('util');
const _ = require('lodash');
exports.TextView = TextView;
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function TextView(options) {
if (options.dimens) {
options.dimens.height = 1; // force height of 1 for TextView's & sub classes
}
View.call(this, options);
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if (options.maxLength) {
this.maxLength = options.maxLength;
} else {
this.maxLength = this.client.term.termWidth - this.position.col;
}
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this.fillChar = renderSubstr(miscUtil.valueWithDefault(options.fillChar, ' '), 0, 1);
this.justify = options.justify || 'left';
this.resizable = miscUtil.valueWithDefault(options.resizable, true);
this.horizScroll = miscUtil.valueWithDefault(options.horizScroll, true);
if (_.isString(options.textOverflow)) {
this.textOverflow = options.textOverflow;
}
if (_.isString(options.textMaskChar) && 1 === options.textMaskChar.length) {
this.textMaskChar = options.textMaskChar;
}
this.drawText = function (s) {
//
// |<- this.maxLength
// ABCDEFGHIJK
// |ABCDEFG| ^_ this.text.length
// ^-- this.dimens.width
//
let renderLength = renderStringLength(s); // initial; may be adjusted below:
let textToDraw = _.isString(this.textMaskChar)
? new Array(renderLength + 1).join(this.textMaskChar)
: stylizeString(s, this.hasFocus ? this.focusTextStyle : this.textStyle);
renderLength = renderStringLength(textToDraw);
if (renderLength >= this.dimens.width) {
if (this.hasFocus) {
if (this.horizScroll) {
textToDraw = renderSubstr(
textToDraw,
renderLength - this.dimens.width,
renderLength
);
}
} else {
if (
this.textOverflow &&
this.dimens.width > this.textOverflow.length &&
renderLength - this.textOverflow.length >= this.textOverflow.length
) {
textToDraw =
renderSubstr(
textToDraw,
0,
this.dimens.width - this.textOverflow.length
) + this.textOverflow;
} else {
textToDraw = renderSubstr(textToDraw, 0, this.dimens.width);
}
}
}
const renderedFillChar = pipeToAnsi(this.fillChar);
this.client.term.write(
padStr(
textToDraw,
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this.dimens.width,
renderedFillChar, //this.fillChar,
this.justify,
this.hasFocus ? this.getFocusSGR() : this.getSGR(),
this.getStyleSGR(1) || this.getSGR(),
true // use render len
),
false // no converting CRLF needed
);
};
this.getEndOfTextColumn = function () {
var offset = Math.min(this.text.length, this.dimens.width);
return this.position.col + offset;
};
this.setText(options.text || '', false); // false=do not redraw now
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}
util.inherits(TextView, View);
TextView.prototype.redraw = function () {
//
// A lot of views will get an initial redraw() with empty text (''). We can short
// circuit this by NOT doing any of the work if this is the initial drawText
// and there is no actual text (e.g. save SGR's and processing)
//
if (!this.hasDrawnOnce) {
if (_.isUndefined(this.text)) {
return;
}
}
this.hasDrawnOnce = true;
TextView.super_.prototype.redraw.call(this);
if (_.isString(this.text)) {
this.drawText(this.text);
}
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};
TextView.prototype.setFocus = function (focused) {
TextView.super_.prototype.setFocus.call(this, focused);
this.redraw();
this.client.term.write(ansi.goto(this.position.row, this.getEndOfTextColumn()));
this.client.term.write(this.getFocusSGR());
};
TextView.prototype.getData = function () {
return this.text;
};
TextView.prototype.setText = function (text, redraw) {
redraw = _.isBoolean(redraw) ? redraw : true;
if (!_.isString(text)) {
// allow |text| to be numbers/etc.
text = text.toString();
}
const formatObj = getPredefinedMCIFormatObject(this.client, text);
if (formatObj) {
// expand before converting
text = stringFormat(text, formatObj);
}
this.text = pipeToAnsi(stripAllLineFeeds(text), this.client); // expand MCI/etc.
if (this.maxLength > 0) {
this.text = renderSubstr(this.text, 0, this.maxLength);
}
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// :TODO: it would be nice to be able to stylize strings with MCI and {special} MCI syntax, e.g. "|BN {UN!toUpper}"
this.text = stylizeString(
this.text,
this.hasFocus ? this.focusTextStyle : this.textStyle
);
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if (redraw) {
this.redraw();
}
};
TextView.prototype.clearText = function () {
this.setText('');
};
TextView.prototype.setPropertyValue = function (propName, value) {
switch (propName) {
case 'textMaskChar':
this.textMaskChar = value.substr(0, 1);
break;
case 'textOverflow':
this.textOverflow = value;
break;
case 'maxLength':
this.maxLength = parseInt(value, 10);
break;
case 'password':
if (true === value) {
this.textMaskChar = this.client.currentTheme.helpers.getPasswordChar();
}
break;
}
TextView.super_.prototype.setPropertyValue.call(this, propName, value);
};