defmodule Phoenix.WebComponent.Pagination do
@moduledoc """
Render pagination.
"""
use Phoenix.WebComponent, :html
@doc """
Generates a pagination.
## Examples
<.wc_pagination page_num={5} page_size={15} total={100} update_event="update-page"/>
"""
@doc type: :component
attr(:id, :any,
default: false,
doc: """
html attribute id
"""
)
attr(:class, :any,
default: "",
doc: """
html attribute class
"""
)
attr(:page_size, :integer,
default: 10,
doc: """
items shows per page
"""
)
attr(:page_num, :integer,
default: 1,
doc: """
page num
"""
)
attr(:total, :integer,
default: 0,
doc: """
total items count
"""
)
attr(:update_event, :string,
default: "update_current_page",
doc: """
Phoenix live event name for page status update.
"""
)
def wc_pagination(assigns) do
max_page =
if assigns.total > 0 do
(assigns.total / assigns.page_size) |> ceil
else
1
end
page_num = assigns.page_num
pages =
cond do
max_page == 1 ->
[1]
max_page < 7 ->
1..max_page |> Enum.map(& &1)
page_num < 3 ->
[1, 2, 3] ++ ["..."] ++ [max_page - 2, max_page - 1, max_page]
page_num == 3 ->
[1, 2, 3, 4] ++ ["..."] ++ [max_page - 2, max_page - 1, max_page]
page_num > 3 && page_num < max_page - 2 ->
[1] ++ ["...", page_num - 1, page_num, page_num + 1, "..."] ++ [max_page]
page_num == max_page - 2 ->
[1, 2, 3] ++ ["...", max_page - 3, max_page - 2, max_page - 1, max_page]
page_num > max_page - 2 ->
[1, 2, 3] ++ ["...", max_page - 2, max_page - 1, max_page]
end
assigns =
assigns
|> assign(:max_page, max_page)
|> assign(:pages, pages)
~H"""
<div
id={@id}
class={[
"flex items-center justify-end",
"border-t border-gray-200",
"bg-white px-4 py-3",
@class
]}
>
<div class="flex flex-row items-center mx-8">
<div class="inline-flex flex-row items-center mx-8">
<p class="inline-flex flex-row items-center text-medium text-gray-700">
<span class="mr-1 after:content-[':']">Total</span>
<span class="font-medium"><%= @total %></span>
</p>
</div>
<div>
<nav class="isolate inline-flex -space-x-px rounded-md shadow-sm" aria-label="Pagination">
<span
phx-click={if @page_num == 1, do: false, else: @update_event}
phx-value-current={if @page_num == 1, do: nil, else: @page_num - 1}
disabled={if @page_num == 1, do: true, else: false}
class={[
"relative inline-flex items-center",
"rounded-l-md border border-gray-300",
"bg-white hover:bg-gray-50 px-2 py-2",
"text-sm font-medium text-gray-500 focus:z-20",
if(@page_num == 1, do: "", else: "cursor-pointer"),
]}>
<span class="sr-only">Previous</span>
<!-- Heroicon name: mini/chevron-left -->
<svg class="h-5 w-5" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
<path fill-rule="evenodd" d="M12.79 5.23a.75.75 0 01-.02 1.06L8.832 10l3.938 3.71a.75.75 0 11-1.04 1.08l-4.5-4.25a.75.75 0 010-1.08l4.5-4.25a.75.75 0 011.06.02z" clip-rule="evenodd" />
</svg>
</span>
<!-- Current: "z-10 bg-indigo-50 border-indigo-500 text-indigo-600", Default: "bg-white border-gray-300 text-gray-500 hover:bg-gray-50" -->
<%= for p <- @pages do %>
<%= if is_binary(p) do %>
<span
class={[
"relative inline-flex items-center",
"border border-gray-300",
"bg-white hover:bg-gray-50",
"px-4 py-2",
"text-sm font-medium text-gray-500 focus:z-20",
]}
><%= p %></span>
<% else %>
<span
phx-click={@update_event} phx-value-current={p}
aria-current={if p == @page_num, do: "page", else: false }
class={[
"relative inline-flex items-center",
"border border-gray-300",
"bg-white hover:bg-gray-50 px-4 py-2",
"text-sm font-medium text-gray-500 focus:z-20",
if(p == @page_num, do: "z-10 bg-indigo-50 border-indigo-500 text-indigo-600", else: "cursor-pointer"),
]}
><%= p %></span>
<% end %>
<% end %>
<span
phx-click={if @page_num == @max_page, do: false, else: @update_event}
phx-value-current={if @page_num == @max_page, do: nil, else: @page_num + 1}
disabled={if @page_num == @max_page, do: true, else: false}
class={[
"inline-flex items-center",
"relative px-2 py-2",
"border border-gray-300 rounded-r-md",
"bg-white hover:bg-gray-50",
"text-sm font-medium text-gray-500 focus:z-20",
if(@page_num == @max_page, do: "", else: "cursor-pointer"),
]}>
<span class="sr-only">Next</span>
<!-- Heroicon name: mini/chevron-right -->
<svg class="h-5 w-5" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
<path fill-rule="evenodd" d="M7.21 14.77a.75.75 0 01.02-1.06L11.168 10 7.23 6.29a.75.75 0 111.04-1.08l4.5 4.25a.75.75 0 010 1.08l-4.5 4.25a.75.75 0 01-1.06-.02z" clip-rule="evenodd" />
</svg>
</span>
</nav>
</div>
</div>
</div>
"""
end
end
