2025-04-15 21:49:22 +03:00

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# druid.input API
> at /druid/extended/input.lua
Basic Druid text input component. Handles user text input via component with button and text.
### Setup
Create input component with druid: `input = druid:new_input(button_node_name, text_node_name, keyboard_type)`
### Notes
- Input component handles user text input. Input contains button and text components
- Button needed for selecting/unselecting input field
- Click outside of button to unselect input field
- On focus lost (game minimized) input field will be unselected
- You can setup max length of the text
- You can setup allowed characters. On add not allowed characters `on_input_wrong` will be called
## Functions
- [init](#init)
- [get_text_selected](#get_text_selected)
- [get_text_selected_replaced](#get_text_selected_replaced)
- [set_text](#set_text)
- [select](#select)
- [unselect](#unselect)
- [get_text](#get_text)
- [set_max_length](#set_max_length)
- [set_allowed_characters](#set_allowed_characters)
- [reset_changes](#reset_changes)
- [select_cursor](#select_cursor)
- [move_selection](#move_selection)
## Fields
- [on_input_select](#on_input_select)
- [on_input_unselect](#on_input_unselect)
- [on_input_text](#on_input_text)
- [on_input_empty](#on_input_empty)
- [on_input_full](#on_input_full)
- [on_input_wrong](#on_input_wrong)
- [on_select_cursor_change](#on_select_cursor_change)
- [style](#style)
- [druid](#druid)
- [text](#text)
- [is_selected](#is_selected)
- [value](#value)
- [previous_value](#previous_value)
- [current_value](#current_value)
- [marked_value](#marked_value)
- [is_empty](#is_empty)
- [text_width](#text_width)
- [market_text_width](#market_text_width)
- [total_width](#total_width)
- [cursor_index](#cursor_index)
- [start_index](#start_index)
- [end_index](#end_index)
- [max_length](#max_length)
- [allowed_characters](#allowed_characters)
- [keyboard_type](#keyboard_type)
- [button](#button)
- [marked_text_width](#marked_text_width)
### init
---
```lua
input:init(click_node, text_node, [keyboard_type])
```
- **Parameters:**
- `click_node` *(node)*: Node to enabled input component
- `text_node` *(druid.text|node)*: Text node what will be changed on user input. You can pass text component instead of text node name Text
- `[keyboard_type]` *(constant|nil)*: Gui keyboard type for input field
### get_text_selected
---
```lua
input:get_text_selected()
```
- **Returns:**
- `` *(string|unknown)*:
### get_text_selected_replaced
---
```lua
input:get_text_selected_replaced(text)
```
Replace selected text with new text
- **Parameters:**
- `text` *(string)*: The text to replace selected text
- **Returns:**
- `new_text` *(string)*: New input text
### set_text
---
```lua
input:set_text([input_text])
```
Set text for input field
- **Parameters:**
- `[input_text]` *(string?)*: The string to apply for input field, if nil - will be set to empty string
### select
---
```lua
input:select()
```
Select input field. It will show the keyboard and trigger on_select events
### unselect
---
```lua
input:unselect()
```
Remove selection from input. It will hide the keyboard and trigger on_unselect events
### get_text
---
```lua
input:get_text()
```
Return current input field text
- **Returns:**
- `text` *(string)*: The current input field text
### set_max_length
---
```lua
input:set_max_length(max_length)
```
Set maximum length for input field.
Pass nil to make input field unliminted (by default)
- **Parameters:**
- `max_length` *(number)*: Maximum length for input text field
- **Returns:**
- `self` *(druid.input)*: Current input instance
### set_allowed_characters
---
```lua
input:set_allowed_characters(characters)
```
Set allowed charaters for input field.
See: https://defold.com/ref/stable/string/
ex: [%a%d] for alpha and numeric
ex: [abcdef] to allow only these characters
ex: [^%s] to allow only non-space characters
- **Parameters:**
- `characters` *(string)*: Regular expression for validate user input
- **Returns:**
- `self` *(druid.input)*: Current input instance
### reset_changes
---
```lua
input:reset_changes()
```
Reset current input selection and return previous value
- **Returns:**
- `self` *(druid.input)*: Current input instance
### select_cursor
---
```lua
input:select_cursor([cursor_index], [start_index], [end_index])
```
Set cursor position in input field
- **Parameters:**
- `[cursor_index]` *(number|nil)*: Cursor index for cursor position, if nil - will be set to the end of the text
- `[start_index]` *(number|nil)*: Start index for cursor position, if nil - will be set to the end of the text
- `[end_index]` *(number|nil)*: End index for cursor position, if nil - will be set to the start_index
- **Returns:**
- `self` *(druid.input)*: Current input instance
### move_selection
---
```lua
input:move_selection(delta, is_add_to_selection, is_move_to_end)
```
Change cursor position by delta
- **Parameters:**
- `delta` *(number)*: side for cursor position, -1 for left, 1 for right
- `is_add_to_selection` *(boolean)*: (Shift key)
- `is_move_to_end` *(boolean)*: (Ctrl key)
- **Returns:**
- `self` *(druid.input)*: Current input instance
## Fields
<a name="on_input_select"></a>
- **on_input_select** (_event_): fun(self: druid.input, input: druid.input) The event triggered when the input field is selected
<a name="on_input_unselect"></a>
- **on_input_unselect** (_event_): fun(self: druid.input, text: string, input: druid.input) The event triggered when the input field is unselected
<a name="on_input_text"></a>
- **on_input_text** (_event_): fun(self: druid.input) The event triggered when the input field is changed
<a name="on_input_empty"></a>
- **on_input_empty** (_event_): fun(self: druid.input) The event triggered when the input field is empty
<a name="on_input_full"></a>
- **on_input_full** (_event_): fun(self: druid.input) The event triggered when the input field is full
<a name="on_input_wrong"></a>
- **on_input_wrong** (_event_): fun(self: druid.input) The event triggered when the input field is wrong
<a name="on_select_cursor_change"></a>
- **on_select_cursor_change** (_event_): fun(self: druid.input, cursor_index: number, start_index: number, end_index: number) The event triggered when the cursor index is changed
<a name="style"></a>
- **style** (_druid.input.style_): The style of the input component
<a name="druid"></a>
- **druid** (_druid.instance_): The Druid Factory used to create components
<a name="text"></a>
- **text** (_druid.text|node_): Basic Druid text component. Text components by default have the text size adjusting.
<a name="is_selected"></a>
- **is_selected** (_boolean_)
<a name="value"></a>
- **value** (_unknown_)
<a name="previous_value"></a>
- **previous_value** (_unknown_)
<a name="current_value"></a>
- **current_value** (_unknown_)
<a name="marked_value"></a>
- **marked_value** (_string_)
<a name="is_empty"></a>
- **is_empty** (_boolean_)
<a name="text_width"></a>
- **text_width** (_integer_)
<a name="market_text_width"></a>
- **market_text_width** (_integer_)
<a name="total_width"></a>
- **total_width** (_integer_)
<a name="cursor_index"></a>
- **cursor_index** (_integer_)
<a name="start_index"></a>
- **start_index** (_number_)
<a name="end_index"></a>
- **end_index** (_number_)
<a name="max_length"></a>
- **max_length** (_nil_)
<a name="allowed_characters"></a>
- **allowed_characters** (_nil_)
<a name="keyboard_type"></a>
- **keyboard_type** (_constant_)
<a name="button"></a>
- **button** (_druid.button_): Basic Druid input component. Handle input on node and provide different callbacks on touch events.
<a name="marked_text_width"></a>
- **marked_text_width** (_number_)