class.ilNumberInputGUI.php

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<?php

declare(strict_types=1);

class ilNumberInputGUI extends ilSubEnabledFormPropertyGUI
{
    protected ?float $value = null;
    protected int $maxlength = 200;
    protected int $size = 40;
    protected string $suffix = "";
    protected ?float $minvalue = null;
    protected bool $minvalueShouldBeGreater = false;
    protected bool $minvalue_visible = false;
    protected ?float $maxvalue = null;
    protected bool $maxvalueShouldBeLess = false;
    protected bool $maxvalue_visible = false;
    protected int $decimals = 0;
    protected bool $allow_decimals = false;
    protected bool $client_side_validation = false;

    public function __construct(
        string $a_title = "",
        string $a_postvar = ""
    ) {
        global $DIC;

        $this->lng = $DIC->language();
        parent::__construct($a_title, $a_postvar);
    }

    public function setSuffix(string $a_value): void
    {
        $this->suffix = $a_value;
    }

    public function getSuffix(): string
    {
        return $this->suffix;
    }

    public function setValue(?string $a_value): void
    {
        if ($a_value == "" || is_null($a_value)) {
            $this->value = null;
            return;
        }
        $this->value = (float) str_replace(',', '.', $a_value);

        // integer
        if (!$this->areDecimalsAllowed()) {
            $this->value = round($this->value);
        }
        // float
        elseif ($this->getDecimals() > 0) {
            // get rid of unwanted decimals
            $this->value = round($this->value, $this->getDecimals());

            // pad value to specified format
            $this->value = (float) number_format($this->value, $this->getDecimals(), ".", "");
        }
    }

    public function getValue(): ?float
    {
        return $this->value;
    }

    public function unserializeData(string $a_data): void
    {
        $data = unserialize($a_data);

        // BT 35716: table filters with numeric input fields should accept 0
        if ($data || $data === 0 || $data === 0. || $data === '0') {
            $this->setValue((string) $data);
        } else {
            $this->setValue(null);
        }
    }

    public function setMaxLength(int $a_maxlength): void
    {
        $this->maxlength = $a_maxlength;
    }

    public function getMaxLength(): int
    {
        return $this->maxlength;
    }

    // true if the minimum value should be greater than minvalue
    public function setMinvalueShouldBeGreater(bool $a_bool): void
    {
        $this->minvalueShouldBeGreater = $a_bool;
    }

    public function minvalueShouldBeGreater(): bool
    {
        return $this->minvalueShouldBeGreater;
    }

    //  true if the maximum value should be less than maxvalue
    public function setMaxvalueShouldBeLess(bool $a_bool): void
    {
        $this->maxvalueShouldBeLess = $a_bool;
    }

    public function maxvalueShouldBeLess(): bool
    {
        return $this->maxvalueShouldBeLess;
    }

    public function setSize(int $a_size): void
    {
        $this->size = $a_size;
    }

    public function setValueByArray(array $a_values): void
    {
        $this->setValue((string) ($a_values[$this->getPostVar()] ?? ""));
    }

    public function getSize(): int
    {
        return $this->size;
    }

    public function setMinValue(
        float $a_minvalue,
        bool $a_display_always = false
    ): void {
        $this->minvalue = $a_minvalue;
        $this->minvalue_visible = $a_display_always;
    }

    public function getMinValue(): ?float
    {
        return $this->minvalue;
    }

    public function setMaxValue(
        float $a_maxvalue,
        bool $a_display_always = false
    ): void {
        $this->maxvalue = $a_maxvalue;
        $this->maxvalue_visible = $a_display_always;
    }

    public function getMaxValue(): ?float
    {
        return $this->maxvalue;
    }

    public function setDecimals(int $a_decimals): void
    {
        $this->decimals = $a_decimals;
        if ($this->decimals) {
            $this->allowDecimals(true);
        }
    }

    public function getDecimals(): int
    {
        return $this->decimals;
    }

    public function allowDecimals(bool $a_value): void
    {
        $this->allow_decimals = $a_value;
    }

    public function areDecimalsAllowed(): bool
    {
        return $this->allow_decimals;
    }

    public function checkInput(): bool
    {
        $lng = $this->lng;

        $val = trim($this->str($this->getPostVar()));
        if ($this->getRequired() && $val == "") {
            $this->setAlert($lng->txt("msg_input_is_required"));
            return false;
        }
        $val = str_replace(',', '.', $val);

        if ($val != "" && !is_numeric($val)) {
            $this->minvalue_visible = true;
            $this->maxvalue_visible = true;
            $this->setAlert($lng->txt("form_msg_numeric_value_required"));
            return false;
        }

        if ($this->minvalueShouldBeGreater()) {
            if ($val != "" && $this->getMinValue() !== null &&
                $val <= $this->getMinValue()) {
                $this->minvalue_visible = true;
                $this->setAlert($lng->txt("form_msg_value_too_low"));
                return false;
            }
        } else {
            if ($val != "" &&
                $this->getMinValue() !== null &&
                $val < $this->getMinValue()) {
                $this->minvalue_visible = true;
                $this->setAlert($lng->txt("form_msg_value_too_low"));
                return false;
            }
        }

        if ($this->maxvalueShouldBeLess()) {
            if ($val != "" &&
                $this->getMaxValue() !== null &&
                $val >= $this->getMaxValue()) {
                $this->maxvalue_visible = true;
                $this->setAlert($lng->txt("form_msg_value_too_high"));
                return false;
            }
        } else {
            if ($val != "" &&
                $this->getMaxValue() !== null &&
                $val > $this->getMaxValue()) {
                $this->maxvalue_visible = true;
                $this->setAlert($lng->txt("form_msg_value_too_high"));
                return false;
            }
        }

        return $this->checkSubItemsInput();
    }

    public function getInput(): ?float
    {
        $value = $this->str($this->getPostVar());
        if (trim($value) == "") {
            return null;
        }
        return (float) str_replace(',', '.', $value);
    }

    public function insert(ilTemplate $a_tpl): void
    {
        $html = $this->render();

        $a_tpl->setCurrentBlock("prop_generic");
        $a_tpl->setVariable("PROP_GENERIC", $html);
        $a_tpl->parseCurrentBlock();
    }

    public function render(): string
    {
        $lng = $this->lng;

        $tpl = new ilTemplate("tpl.prop_number.html", true, true, "Services/Form");

        if (strlen((string) $this->getValue())) {
            $tpl->setCurrentBlock("prop_number_propval");
            $tpl->setVariable("PROPERTY_VALUE", ilLegacyFormElementsUtil::prepareFormOutput((string) $this->getValue()));
            $tpl->parseCurrentBlock();
        }

        if ($this->getInfo() !== '') {
            $tpl->setCurrentBlock('described_by_description');
            $tpl->setVariable('DESCRIBED_BY_DESCRIPTION_FIELD_ID', $this->getFieldId());
            $tpl->parseCurrentBlock();
        }

        // constraints
        $constraints = "";
        $delim = "";
        if ($this->areDecimalsAllowed() && $this->getDecimals() > 0) {
            $constraints = $lng->txt("form_format") . ": ###." . str_repeat("#", $this->getDecimals());
            $delim = ", ";
        }
        if ($this->getMinValue() !== null && $this->minvalue_visible) {
            $constraints .= $delim . $lng->txt("form_min_value") . ": " . (($this->minvalueShouldBeGreater()) ? "&gt; " : "") . $this->getMinValue();
            $delim = ", ";
        }
        if ($this->getMaxValue() !== null && $this->maxvalue_visible) {
            $constraints .= $delim . $lng->txt("form_max_value") . ": " . (($this->maxvalueShouldBeLess()) ? "&lt; " : "") . $this->getMaxValue();
            $delim = ", ";
        }

        if ($constraints !== "") {
            $tpl->setCurrentBlock('described_by_constraint');
            $tpl->setVariable('DESCRIBED_BY_CONSTRAINT_FIELD_ID', $this->getFieldId());
            $tpl->parseCurrentBlock();
        }

        $tpl->setCurrentBlock("prop_number");

        $tpl->setVariable("POST_VAR", $this->getPostVar());
        $tpl->setVariable("ID", $this->getFieldId());
        $tpl->setVariable("SIZE", $this->getSize());
        $tpl->setVariable("MAXLENGTH", $this->getMaxLength());
        if (strlen($this->getSuffix())) {
            $tpl->setVariable("INPUT_SUFFIX", $this->getSuffix());
        }
        if ($this->getDisabled()) {
            $tpl->setVariable(
                "DISABLED",
                " disabled=\"disabled\""
            );
        }

        if ($this->client_side_validation) {
            $tpl->setVariable("JS_DECIMALS_ALLOWED", (int) $this->areDecimalsAllowed());
            $tpl->setVariable("JS_ID", $this->getFieldId());
        }

        if ($constraints !== '') {
            $tpl->setVariable("TXT_NUMBER_CONSTRAINTS", $constraints);
            $tpl->setVariable(
                "CONSTRAINT_FOR_ID",
                $this->getFieldId()
            );
        }

        if ($this->getRequired()) {
            $tpl->setVariable("REQUIRED", "required=\"required\"");
        }

        $tpl->parseCurrentBlock();

        return $tpl->get();
    }

    public function getPostValueForComparison(): ?float
    {
        return $this->getInput();
    }

    public function setClientSideValidation(bool $validate): void
    {
        $this->client_side_validation = $validate;
    }
}