enigma-bbs/core/edit_text_view.js

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/* jslint node: true */
'use strict';
// ENiGMA½
const TextView = require('./text_view.js').TextView;
const miscUtil = require('./misc_util.js');
const strUtil = require('./string_util.js');
const VIEW_SPECIAL_KEY_MAP_DEFAULT = require('./view').VIEW_SPECIAL_KEY_MAP_DEFAULT;
// deps
const _ = require('lodash');
exports.EditTextView = EditTextView;
const EDIT_TEXT_VIEW_KEY_MAP = Object.assign({}, VIEW_SPECIAL_KEY_MAP_DEFAULT, {
delete: ['delete', 'ctrl + d'], // https://www.tecmint.com/linux-command-line-bash-shortcut-keys/
});
function EditTextView(options) {
options.acceptsFocus = miscUtil.valueWithDefault(options.acceptsFocus, true);
options.acceptsInput = miscUtil.valueWithDefault(options.acceptsInput, true);
options.cursorStyle = miscUtil.valueWithDefault(options.cursorStyle, 'steady block');
options.resizable = false;
if (!_.isObject(options.specialKeyMap)) {
options.specialKeyMap = EDIT_TEXT_VIEW_KEY_MAP;
}
TextView.call(this, options);
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this.initDefaultWidth();
this.cursorPos = { row: 0, col: 0 };
this.clientBackspace = function () {
this.text = this.text.substr(0, this.text.length - 1);
if (this.text.length >= this.dimens.width) {
this.redraw();
} else {
this.cursorPos.col -= 1;
if (this.cursorPos.col >= 0) {
const fillCharSGR = this.getStyleSGR(1) || this.getSGR();
this.client.term.write(
`\b${fillCharSGR}${this.fillChar}\b${this.getFocusSGR()}`
);
}
}
};
}
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require('util').inherits(EditTextView, TextView);
EditTextView.prototype.onKeyPress = function (ch, key) {
if (key) {
if (this.isKeyMapped('backspace', key.name)) {
if (this.text.length > 0) {
this.clientBackspace();
}
return EditTextView.super_.prototype.onKeyPress.call(this, ch, key);
} else if (this.isKeyMapped('delete', key.name)) {
// Some (mostly older) terms send 'delete' for Backspace.
// if we're at the end of the line, go ahead and treat them the same
if (this.text.length > 0 && this.cursorPos.col === this.text.length) {
this.clientBackspace();
}
} else if (this.isKeyMapped('clearLine', key.name)) {
this.text = '';
this.cursorPos.col = 0;
this.setFocus(true); // resetting focus will redraw & adjust cursor
return EditTextView.super_.prototype.onKeyPress.call(this, ch, key);
}
}
if (ch && strUtil.isPrintable(ch)) {
if (this.text.length < this.maxLength) {
ch = strUtil.stylizeString(ch, this.textStyle);
this.text += ch;
if (this.text.length > this.dimens.width) {
// no shortcuts - redraw the view
this.redraw();
} else {
this.cursorPos.col += 1;
if (_.isString(this.textMaskChar)) {
if (this.textMaskChar.length > 0) {
this.client.term.write(this.textMaskChar);
}
} else {
this.client.term.write(ch);
}
}
}
}
EditTextView.super_.prototype.onKeyPress.call(this, ch, key);
};
EditTextView.prototype.setText = function (text) {
// draw & set |text|
EditTextView.super_.prototype.setText.call(this, text);
// adjust local cursor tracking
this.cursorPos = { row: 0, col: text.length };
};