ngx-ui-hero
Version:
Simple, fast and reliable utilities for Angular.
81 lines • 13.2 kB
JavaScript
export class InputManager {
constructor(htmlInputElement) {
this.htmlInputElement = htmlInputElement;
}
setCursorAt(position) {
if (this.htmlInputElement.setSelectionRange) {
this.htmlInputElement.focus();
this.htmlInputElement.setSelectionRange(position, position);
}
else if (this.htmlInputElement.createTextRange) {
let textRange = this.htmlInputElement.createTextRange();
textRange.collapse(true);
textRange.moveEnd("character", position);
textRange.moveStart("character", position);
textRange.select();
}
}
updateValueAndCursor(newRawValue, oldLength, selectionStart) {
this.rawValue = newRawValue;
let newLength = newRawValue.length;
selectionStart = selectionStart - (oldLength - newLength);
this.setCursorAt(selectionStart);
}
get canInputMoreNumbers() {
let haventReachedMaxLength = !(this.rawValue.length >= this.htmlInputElement.maxLength && this.htmlInputElement.maxLength >= 0);
let selectionStart = this.inputSelection.selectionStart;
let selectionEnd = this.inputSelection.selectionEnd;
let haveNumberSelected = (selectionStart != selectionEnd && this.htmlInputElement.value.substring(selectionStart, selectionEnd).match(/\d/)) ? true : false;
let startWithZero = (this.htmlInputElement.value.substring(0, 1) == "0");
return haventReachedMaxLength || haveNumberSelected || startWithZero;
}
get inputSelection() {
let selectionStart = 0;
let selectionEnd = 0;
if (typeof this.htmlInputElement.selectionStart == "number" && typeof this.htmlInputElement.selectionEnd == "number") {
selectionStart = this.htmlInputElement.selectionStart;
selectionEnd = this.htmlInputElement.selectionEnd;
}
else {
let range = document.getSelection().anchorNode;
if (range && range.firstChild == this.htmlInputElement) {
let lenght = this.htmlInputElement.value.length;
let normalizedValue = this.htmlInputElement.value.replace(/\r\n/g, "\n");
let startRange = this.htmlInputElement.createTextRange();
let endRange = this.htmlInputElement.createTextRange();
endRange.collapse(false);
if (startRange.compareEndPoints("StartToEnd", endRange) > -1) {
selectionStart = selectionEnd = lenght;
}
else {
selectionStart = -startRange.moveStart("character", -lenght);
selectionStart += normalizedValue.slice(0, selectionStart).split("\n").length - 1;
if (startRange.compareEndPoints("EndToEnd", endRange) > -1) {
selectionEnd = lenght;
}
else {
selectionEnd = -startRange.moveEnd("character", -lenght);
selectionEnd += normalizedValue.slice(0, selectionEnd).split("\n").length - 1;
}
}
}
}
return {
selectionStart: selectionStart,
selectionEnd: selectionEnd
};
}
get rawValue() {
return this.htmlInputElement && this.htmlInputElement.value;
}
set rawValue(value) {
this._storedRawValue = value;
if (this.htmlInputElement) {
this.htmlInputElement.value = value;
}
}
get storedRawValue() {
return this._storedRawValue;
}
}
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true : false;\n        let startWithZero = (this.htmlInputElement.value.substring(0, 1) == \"0\");\n        return haventReachedMaxLength || haveNumberSelected || startWithZero;\n    }\n\n    get inputSelection(): any {\n        let selectionStart = 0;\n        let selectionEnd = 0;\n\n        if (typeof this.htmlInputElement.selectionStart == \"number\" && typeof this.htmlInputElement.selectionEnd == \"number\") {\n            selectionStart = this.htmlInputElement.selectionStart;\n            selectionEnd = this.htmlInputElement.selectionEnd;\n        } else {\n            let range = document.getSelection().anchorNode;\n\n            if (range && range.firstChild == this.htmlInputElement) {\n                let lenght = this.htmlInputElement.value.length;\n                let normalizedValue = this.htmlInputElement.value.replace(/\\r\\n/g, \"\\n\");\n                let startRange = this.htmlInputElement.createTextRange();\n                let endRange = this.htmlInputElement.createTextRange();\n                endRange.collapse(false);\n\n                if (startRange.compareEndPoints(\"StartToEnd\", endRange) > -1) {\n                    selectionStart = selectionEnd = lenght;\n                } else {\n                    selectionStart = -startRange.moveStart(\"character\", -lenght);\n                    selectionStart += normalizedValue.slice(0, selectionStart).split(\"\\n\").length - 1;\n\n                    if (startRange.compareEndPoints(\"EndToEnd\", endRange) > -1) {\n                        selectionEnd = lenght;\n                    } else {\n                        selectionEnd = -startRange.moveEnd(\"character\", -lenght);\n                        selectionEnd += normalizedValue.slice(0, selectionEnd).split(\"\\n\").length - 1;\n                    }\n                }\n            }\n        }\n\n        return {\n            selectionStart: selectionStart,\n            selectionEnd: selectionEnd\n        };\n    }\n\n    get rawValue(): string {\n        return this.htmlInputElement && this.htmlInputElement.value;\n    }\n\n    set rawValue(value: string) {\n        this._storedRawValue = value;\n\n        if (this.htmlInputElement) {\n            this.htmlInputElement.value = value;\n        }\n    }\n\n    get storedRawValue(): string {\n        return this._storedRawValue;\n    }\n}"]}