48 lines
1.7 KiB
TypeScript
48 lines
1.7 KiB
TypeScript
module TK.SpaceTac.UI {
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/**
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* UI component to allow the user to enter a small text
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*/
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export class UITextInput {
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private container: UIButton
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private content: UIText
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private placeholder: UIText
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private maxlength: number
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constructor(builder: UIBuilder, background: string, x = 0, y = 0, maxlength: number, placeholder = "") {
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this.container = builder.button(background, x, y, () => {
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builder.view.inputs.grabKeyboard(this, key => this.processKey(key));
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}, undefined, undefined, { center: true });
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this.content = builder.in(this.container).text("", 0, 0, { center: true });
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this.placeholder = builder.in(this.container).text(placeholder, 0, 0, { center: true });
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this.placeholder.setAlpha(0.5);
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this.maxlength = maxlength;
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}
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/**
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* Process a key press
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*/
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processKey(key: string): void {
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if (key.length == 1 && this.content.text.length < this.maxlength) {
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this.setContent(this.content.text + key);
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} else if (key == "Backspace" && this.content.text.length > 0) {
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this.setContent(this.content.text.substr(0, this.content.text.length - 1));
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}
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}
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/**
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* Get current text content
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*/
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getContent(): string {
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return this.content.text;
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}
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/**
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* Set the current text content
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*/
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setContent(content: string): void {
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this.content.setText(content.slice(0, this.maxlength));
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this.placeholder.setVisible(!this.content.text);
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}
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}
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} |