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The elements for the custome Web pages
Representative HTML elements for making the custom Web page are provided as AutoConnectElements.
- AutoConnectButton: Labeled action button
- AutoConnectCheckbox: Labeled checkbox
- AutoConnectElement: General tag
- AutoConnectInput: Labeled text input box
- AutoConnectRadio: Labeled radio button
- AutoConnectSelect: Selection list
- AutoConnectSubmit: Submit button
- AutoConnectText: Style attributed text
Each element has a common attribute and its own attributes.
Layout on custom Web page
You can specify the direction to arrange the radio buttons as AutoConnectRadio vertically or horizontally. The checkbox as AutoConnectCheckbox is not divided in a line by each element. In order to arrange vertically, it is necessary to clearly indicate the <br> tag. Other elements are arranged vertically in the order of addition to AutoConnectAux. This basic layout depends on the CSS of the AutoConnect menu so it can not be changed drastically.
AutoConnectElement - A basic class of elements
AutoConnectElement is a base class for other element classes and has common attributes for all elements. It can also be used as a variant of each element. The following items are attributes that AutoConnectElement has and are common to other elements.
name
Every element has a name. Name is the String data type. To access its element in the sketches you can identify by the name. Its method is useful for loading elements in JSON. In the load function of AutoConnectElement(s) described later, these objects are not created in advance by sketches. Therefore, access to the attribute of that element by name as follows:
AutoConnectAux customPage("Custom page", "/custom_page");
const char ELEMENT_TEXT[] PROGMEM = R"(
{
"name": "text1",
"type": "ACText",
"value": "Hello, world"
}
)";
customPage.loadElement(ELEMENT_TEXT);
AutoConnectText& text1 = customPage.getElement<AutoConnectText>("text1");
text1.style = "text-align:center;color:#2f4f4f;"
The above example accesses the text1 element which loaded from JSON using AutoConnectAux's getElement function by name and sets the style attribute.
value
Value is the source of the HTML code generated with the element and its data type is String. Characteristics of Value vary depending on the element. The value of AutoConnectElement is native HTML code. A string of value is output as HTML as it is.
type
Type indicates the type of the element and represented as the ACElement_t enumeration type in the sketch. Since AutoConnectElement also acts as a variant of other elements, it can be applied to handle elements collectively. At that time, the type can be referred to by the typeOf() function. The following example changes the font color of all AutoConnectText elements of a custom web page to gray.
AutoConnectAux customPage;
AutoConnectElementVT& elements = customPage.getElements();
for (AutoConnectElement& elm : elememts) {
if (elm.typeOf() == AC_Text) {
AutoConnectText& text = reinterpret_cast<AutoConnectText&>(elm);
text.style = "color:gray;";
}
}
The enumerators for ACElement_t are as follows:
- AutoConnetButton: AC_Button
- AutoConnectCheckbox: AC_Checkbox
- AutoConnectElement: AC_Element
- AutoConnectInput: AC_Input
- AutoConnectRadio: AC_Radio
- AutoConnectSelect: AC_Select
- AutoConnectSubmit: AC_Submit
- AutoConnectText: AC_Text
- Uninitialized element: AC_Unknown