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Rivertalk/lib/river_connect_web/components/ui/dropdown_menu.ex
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2026-02-12 17:10:03 -06:00

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Elixir

defmodule RiverConnectWeb.Components.UI.DropdownMenu do
@moduledoc """
Implementation of dropdown menu component for SaladUI framework.
Dropdown menus display a list of options when a trigger element is clicked.
They provide a way to select from multiple options while conserving screen space.
## Examples:
<.dropdown_menu id="user-menu">
<.dropdown_menu_trigger>
<.button variant="outline">Open Menu</.button>
</.dropdown_menu_trigger>
<.dropdown_menu_content>
<.dropdown_menu_label>My Account</.dropdown_menu_label>
<.dropdown_menu_separator />
<.dropdown_menu_group>
<.dropdown_menu_item on-select={JS.push("profile_selected")}>
Profile
<.dropdown_menu_shortcut>⌘P</.dropdown_menu_shortcut>
</.dropdown_menu_item>
<.dropdown_menu_item on-select={JS.push("settings_selected")}>
Settings
<.dropdown_menu_shortcut>⌘S</.dropdown_menu_shortcut>
</.dropdown_menu_item>
<.dropdown_menu_item disabled>
Disabled Option
</.dropdown_menu_item>
</.dropdown_menu_group>
<.dropdown_menu_separator />
<.dropdown_menu_item variant="destructive" on-select={JS.push("logout")}>
Log out
</.dropdown_menu_item>
</.dropdown_menu_content>
</.dropdown_menu>
## Example with checkbox items
<.dropdown_menu id="options-menu">
<.dropdown_menu_trigger>
<.button variant="outline">Options</.button>
</.dropdown_menu_trigger>
<.dropdown_menu_content>
<.dropdown_menu_checkbox_item
checked={@is_bold}
on-checked-change={JS.push("toggle_bold")}
>
Bold
</.dropdown_menu_checkbox_item>
<.dropdown_menu_checkbox_item
checked={@is_italic}
on-checked-change={JS.push("toggle_italic")}
>
Italic
</.dropdown_menu_checkbox_item>
</.dropdown_menu_content>
</.dropdown_menu>
"""
use RiverConnectWeb.Components.UI, :component
@doc """
The main dropdown menu component that manages state and positioning.
## Options
* `:id` - Required unique identifier for the dropdown menu.
* `:open` - Whether the dropdown is initially open. Defaults to `false`.
* `:use-portal` - Whether to render the dropdown in a portal. Defaults to `false`.
* `:portal-container` - CSS selector for the portal container. Defaults to `nil`.
* `:on-open` - Handler for dropdown menu open event.
* `:on-close` - Handler for dropdown menu close event.
* `:class` - Additional CSS classes.
"""
attr :id, :string, required: true, doc: "Unique identifier for the dropdown menu"
attr :open, :boolean, default: false, doc: "Whether the dropdown menu is initially open"
attr :"use-portal", :boolean, default: false, doc: "Whether to render the content in a portal"
attr :"portal-container", :string, default: nil, doc: "CSS selector for the portal container"
attr :"on-open", :any, default: nil, doc: "Handler for dropdown menu open event"
attr :"on-close", :any, default: nil, doc: "Handler for dropdown menu close event"
attr :class, :string, default: nil
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu(assigns) do
# Collect event mappings
event_map =
%{}
|> add_event_mapping(assigns, "opened", :"on-open")
|> add_event_mapping(assigns, "closed", :"on-close")
# Convert kebab-case attributes to snake_case for use in the template
assigns =
assigns
|> assign(:event_map, json(event_map))
|> assign(:initial_state, if(assigns.open, do: "open", else: "closed"))
|> assign(:use_portal, assigns[:"use-portal"])
|> assign(:portal_container, assigns[:"portal-container"])
|> assign(
:options,
json(%{
usePortal: assigns[:"use-portal"],
portalContainer: assigns[:"portal-container"],
animations: get_animation_config()
})
)
~H"""
<div
id={@id}
class={classes(["relative inline-block", @class])}
data-component="dropdown-menu"
data-state={@initial_state}
data-event-mappings={@event_map}
data-options={@options}
data-part="root"
phx-hook="SaladUI"
{@rest}
>
{render_slot(@inner_block)}
</div>
"""
end
@doc """
The trigger element that toggles the dropdown menu.
## Options
* `:class` - Additional CSS classes.
* `:as` - The HTML tag to use for the trigger. Defaults to `"div"`.
"""
attr :class, :string, default: nil
attr :as, :any, default: "div"
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_trigger(assigns) do
~H"""
<.dynamic tag={@as} data-part="trigger" tab-index="0" class={classes(["", @class])} {@rest}>
{render_slot(@inner_block)}
</.dynamic>
"""
end
@doc """
The dropdown menu content that appears when triggered.
## Options
* `:side` - Placement of the dropdown menu relative to the trigger (top, right, bottom, left). Defaults to `"bottom"`.
* `:align` - Alignment of the dropdown menu (start, center, end). Defaults to `"start"`.
* `:side-offset` - Distance from the trigger in pixels. Defaults to `4`.
* `:align-offset` - Offset along the alignment axis. Defaults to `0`.
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :side, :string, values: ~w(top right bottom left), default: "bottom"
attr :align, :string, values: ~w(start center end), default: "start"
attr :"side-offset", :integer, default: 4, doc: "Distance from the trigger in pixels"
attr :"align-offset", :integer, default: 0, doc: "Offset along the alignment axis"
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_content(assigns) do
assigns =
assign(assigns, %{
side_offset: assigns[:"side-offset"],
align_offset: assigns[:"align-offset"]
})
~H"""
<div
data-part="positioner"
data-side={@side}
data-align={@align}
data-side-offset={@side_offset}
data-align-offset={@align_offset}
class="absolute z-50"
style="min-width: var(--salad-reference-width)"
hidden
>
<div
data-part="content"
class={
classes([
"z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md outline-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
@class
])
}
{@rest}
>
{render_slot(@inner_block)}
</div>
</div>
"""
end
@doc """
A group of related dropdown menu items.
## Options
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_group(assigns) do
~H"""
<div data-part="group" role="group" class={classes([@class])} {@rest}>
{render_slot(@inner_block)}
</div>
"""
end
@doc """
A label for a section in the dropdown menu.
## Options
* `:inset` - Whether to inset the label. Defaults to `false`.
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :inset, :boolean, default: false
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_label(assigns) do
~H"""
<div
data-part="label"
class={classes(["px-2 py-1.5 text-sm font-semibold", @inset && "pl-8", @class])}
{@rest}
>
{render_slot(@inner_block)}
</div>
"""
end
@doc """
An item in the dropdown menu.
## Options
* `:disabled` - Whether the item is disabled. Defaults to `false`.
* `:variant` - Visual style variant of the item (default or destructive).
* `:on-select` - Handler for item selection.
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :value, :string, default: nil
attr :variant, :string, values: ~w(default destructive), default: "default"
attr :disabled, :boolean, default: false
attr :"on-select", :any, default: nil, doc: "Handler for item selection"
attr :as, :any, default: "div"
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_item(assigns) do
# Collect event mappings
event_map =
add_event_mapping(%{}, assigns, "item-selected", :"on-select")
assigns =
assign(assigns, :event_map, json(event_map))
~H"""
<.dynamic
tag={@as}
data-part="item"
data-value={@value}
data-disabled={@disabled}
data-event-mappings={@event_map}
class={
classes([
"relative flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:size-4 [&_svg]:shrink-0 [&_svg]:mr-2",
@variant == "destructive" &&
"text-destructive focus:bg-destructive/10 focus:text-destructive dark:focus:bg-destructive/20",
@class
])
}
tabindex={if @disabled, do: "-1", else: "0"}
{@rest}
>
{render_slot(@inner_block)}
</.dynamic>
"""
end
@doc """
An item in the dropdown menu.
## Options
* `:disabled` - Whether the item is disabled. Defaults to `false`.
* `:variant` - Visual style variant of the item (default or destructive).
* `:on-select` - Handler for item selection.
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :value, :string, default: nil
attr :variant, :string, values: ~w(default destructive), default: "default"
attr :disabled, :boolean, default: false
attr :rest, :global, include: ~w(href method)
slot :inner_block, required: true
def dropdown_menu_link_item(assigns) do
# Collect event mappings
~H"""
<.link
data-part="item"
data-value={@value}
data-disabled={@disabled}
class={
classes([
"relative flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:size-4 [&_svg]:shrink-0 [&_svg]:mr-2",
@variant == "destructive" &&
"text-destructive focus:bg-destructive/10 focus:text-destructive dark:focus:bg-destructive/20",
@class
])
}
tabindex={if @disabled, do: "-1", else: "0"}
{@rest}
>
{render_slot(@inner_block)}
</.link>
"""
end
@doc """
A checkbox item in the dropdown menu that can be toggled on/off.
## Options
* `:checked` - Whether the item is initially checked. Defaults to `false`.
* `:disabled` - Whether the item is disabled. Defaults to `false`.
* `:on-checked-change` - Handler for when checked state changes.
* `:on-select` - Handler for item selection.
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :value, :string, default: nil
attr :checked, :boolean, default: false
attr :disabled, :boolean, default: false
attr :"on-select", :any, default: nil, doc: "Handler for item selected event"
attr :"on-checked-change", :any, default: nil, doc: "Handler for when checked state changes"
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_checkbox_item(assigns) do
# Collect event mappings
event_map =
%{}
|> add_event_mapping(assigns, "checked-changed", :"on-checked-change")
|> add_event_mapping(assigns, "item-selected", :"on-select")
assigns =
assign(assigns, :event_map, json(event_map))
~H"""
<div
data-part="checkbox-item"
data-value={@value}
data-disabled={@disabled}
data-checked={@checked}
data-state={(@checked && "checked") || "unchecked"}
data-event-mappings={@event_map}
class={
classes([
"relative flex cursor-default select-none items-center rounded-sm py-1.5 pr-2 pl-8 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
@class
])
}
tabindex={if @disabled, do: "-1", else: "0"}
{@rest}
>
<span class="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
<span
data-part="item-indicator"
data-state={(@checked && "checked") || "unchecked"}
hidden={!@checked}
>
<svg
xmlns="http://www.w3.org/2000/svg"
width="24"
height="24"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
stroke-width="2"
stroke-linecap="round"
stroke-linejoin="round"
class="h-4 w-4"
>
<path d="M20 6 9 17l-5-5"></path>
</svg>
</span>
</span>
{render_slot(@inner_block)}
</div>
"""
end
@doc """
A separator for visually dividing sections of the dropdown menu.
## Options
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :rest, :global
slot :inner_block, required: false
def dropdown_menu_separator(assigns) do
~H"""
<div
data-part="separator"
role="separator"
class={classes(["-mx-1 my-1 h-px bg-muted", @class])}
{@rest}
>
{render_slot(@inner_block)}
</div>
"""
end
@doc """
A keyboard shortcut hint displayed in a dropdown menu item.
## Options
* `:class` - Additional CSS classes.
"""
attr :class, :string, default: nil
attr :rest, :global
slot :inner_block, required: true
def dropdown_menu_shortcut(assigns) do
~H"""
<span
data-part="shortcut"
class={classes(["ml-auto text-xs tracking-widest opacity-60", @class])}
{@rest}
>
{render_slot(@inner_block)}
</span>
"""
end
defp get_animation_config do
%{
"open_to_closed" => %{
duration: 130,
target_part: "content"
}
}
end
end