676 lines
21 KiB
Elixir
676 lines
21 KiB
Elixir
defmodule ExmrWeb.CoreComponents do
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@moduledoc """
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Provides core UI components.
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At first glance, this module may seem daunting, but its goal is to provide
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core building blocks for your application, such as modals, tables, and
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forms. The components consist mostly of markup and are well-documented
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with doc strings and declarative assigns. You may customize and style
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them in any way you want, based on your application growth and needs.
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The default components use Tailwind CSS, a utility-first CSS framework.
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See the [Tailwind CSS documentation](https://tailwindcss.com) to learn
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how to customize them or feel free to swap in another framework altogether.
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Icons are provided by [heroicons](https://heroicons.com). See `icon/1` for usage.
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"""
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use Phoenix.Component
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alias Phoenix.LiveView.JS
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use Gettext, backend: MyApp.Gettext
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@doc """
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Renders a modal.
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## Examples
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<.modal id="confirm-modal">
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This is a modal.
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</.modal>
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JS commands may be passed to the `:on_cancel` to configure
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the closing/cancel event, for example:
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<.modal id="confirm" on_cancel={JS.navigate(~p"/posts")}>
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This is another modal.
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</.modal>
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"""
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attr :id, :string, required: true
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attr :show, :boolean, default: false
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attr :on_cancel, JS, default: %JS{}
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slot :inner_block, required: true
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def modal(assigns) do
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~H"""
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<div
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id={@id}
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phx-mounted={@show && show_modal(@id)}
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phx-remove={hide_modal(@id)}
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data-cancel={JS.exec(@on_cancel, "phx-remove")}
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class="relative z-50 hidden"
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>
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<div id={"#{@id}-bg"} class="bg-zinc-50/90 fixed inset-0 transition-opacity" aria-hidden="true" />
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<div
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class="fixed inset-0 overflow-y-auto"
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aria-labelledby={"#{@id}-title"}
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aria-describedby={"#{@id}-description"}
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role="dialog"
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aria-modal="true"
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tabindex="0"
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>
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<div class="flex min-h-full items-center justify-center">
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<div class="w-full max-w-3xl p-4 sm:p-6 lg:py-8">
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<.focus_wrap
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id={"#{@id}-container"}
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phx-window-keydown={JS.exec("data-cancel", to: "##{@id}")}
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phx-key="escape"
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phx-click-away={JS.exec("data-cancel", to: "##{@id}")}
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class="shadow-zinc-700/10 ring-zinc-700/10 relative hidden rounded-2xl bg-white p-14 shadow-lg ring-1 transition"
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>
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<div class="absolute top-6 right-5">
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<button
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phx-click={JS.exec("data-cancel", to: "##{@id}")}
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type="button"
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class="-m-3 flex-none p-3 opacity-20 hover:opacity-40"
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aria-label={gettext("close")}
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>
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<.icon name="hero-x-mark-solid" class="h-5 w-5" />
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</button>
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</div>
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<div id={"#{@id}-content"}>
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<%= render_slot(@inner_block) %>
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</div>
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</.focus_wrap>
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</div>
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</div>
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</div>
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</div>
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"""
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end
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@doc """
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Renders flash notices.
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## Examples
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<.flash kind={:info} flash={@flash} />
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<.flash kind={:info} phx-mounted={show("#flash")}>Welcome Back!</.flash>
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"""
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attr :id, :string, doc: "the optional id of flash container"
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attr :flash, :map, default: %{}, doc: "the map of flash messages to display"
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attr :title, :string, default: nil
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attr :kind, :atom, values: [:info, :error], doc: "used for styling and flash lookup"
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attr :rest, :global, doc: "the arbitrary HTML attributes to add to the flash container"
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slot :inner_block, doc: "the optional inner block that renders the flash message"
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def flash(assigns) do
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assigns = assign_new(assigns, :id, fn -> "flash-#{assigns.kind}" end)
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~H"""
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<div
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:if={msg = render_slot(@inner_block) || Phoenix.Flash.get(@flash, @kind)}
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id={@id}
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phx-click={JS.push("lv:clear-flash", value: %{key: @kind}) |> hide("##{@id}")}
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role="alert"
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class={[
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"fixed top-2 right-2 mr-2 w-80 sm:w-96 z-50 rounded-lg p-3 ring-1",
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@kind == :info && "bg-emerald-50 text-emerald-800 ring-emerald-500 fill-cyan-900",
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@kind == :error && "bg-rose-50 text-rose-900 shadow-md ring-rose-500 fill-rose-900"
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]}
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{@rest}
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>
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<p :if={@title} class="flex items-center gap-1.5 text-sm font-semibold leading-6">
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<.icon :if={@kind == :info} name="hero-information-circle-mini" class="h-4 w-4" />
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<.icon :if={@kind == :error} name="hero-exclamation-circle-mini" class="h-4 w-4" />
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<%= @title %>
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</p>
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<p class="mt-2 text-sm leading-5"><%= msg %></p>
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<button type="button" class="group absolute top-1 right-1 p-2" aria-label={gettext("close")}>
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<.icon name="hero-x-mark-solid" class="h-5 w-5 opacity-40 group-hover:opacity-70" />
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</button>
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</div>
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"""
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end
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@doc """
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Shows the flash group with standard titles and content.
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## Examples
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<.flash_group flash={@flash} />
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"""
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attr :flash, :map, required: true, doc: "the map of flash messages"
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attr :id, :string, default: "flash-group", doc: "the optional id of flash container"
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def flash_group(assigns) do
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~H"""
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<div id={@id}>
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<.flash kind={:info} title={gettext("Success!")} flash={@flash} />
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<.flash kind={:error} title={gettext("Error!")} flash={@flash} />
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<.flash
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id="client-error"
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kind={:error}
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title={gettext("We can't find the internet")}
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phx-disconnected={show(".phx-client-error #client-error")}
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phx-connected={hide("#client-error")}
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hidden
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>
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<%= gettext("Attempting to reconnect") %>
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<.icon name="hero-arrow-path" class="ml-1 h-3 w-3 animate-spin" />
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</.flash>
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<.flash
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id="server-error"
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kind={:error}
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title={gettext("Something went wrong!")}
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phx-disconnected={show(".phx-server-error #server-error")}
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phx-connected={hide("#server-error")}
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hidden
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>
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<%= gettext("Hang in there while we get back on track") %>
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<.icon name="hero-arrow-path" class="ml-1 h-3 w-3 animate-spin" />
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</.flash>
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</div>
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"""
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end
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@doc """
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Renders a simple form.
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## Examples
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<.simple_form for={@form} phx-change="validate" phx-submit="save">
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<.input field={@form[:email]} label="Email"/>
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<.input field={@form[:username]} label="Username" />
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<:actions>
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<.button>Save</.button>
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</:actions>
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</.simple_form>
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"""
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attr :for, :any, required: true, doc: "the data structure for the form"
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attr :as, :any, default: nil, doc: "the server side parameter to collect all input under"
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attr :rest, :global,
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include: ~w(autocomplete name rel action enctype method novalidate target multipart),
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doc: "the arbitrary HTML attributes to apply to the form tag"
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slot :inner_block, required: true
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slot :actions, doc: "the slot for form actions, such as a submit button"
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def simple_form(assigns) do
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~H"""
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<.form :let={f} for={@for} as={@as} {@rest}>
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<div class="mt-10 space-y-8 bg-white">
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<%= render_slot(@inner_block, f) %>
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<div :for={action <- @actions} class="mt-2 flex items-center justify-between gap-6">
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<%= render_slot(action, f) %>
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</div>
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</div>
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</.form>
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"""
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end
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@doc """
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Renders a button.
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## Examples
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<.button>Send!</.button>
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<.button phx-click="go" class="ml-2">Send!</.button>
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"""
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attr :type, :string, default: nil
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attr :class, :string, default: nil
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attr :rest, :global, include: ~w(disabled form name value)
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slot :inner_block, required: true
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def button(assigns) do
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~H"""
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<button
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type={@type}
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class={[
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"phx-submit-loading:opacity-75 rounded-lg bg-zinc-900 hover:bg-zinc-700 py-2 px-3",
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"text-sm font-semibold leading-6 text-white active:text-white/80",
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@class
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]}
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{@rest}
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>
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<%= render_slot(@inner_block) %>
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</button>
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"""
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end
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@doc """
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Renders an input with label and error messages.
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A `Phoenix.HTML.FormField` may be passed as argument,
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which is used to retrieve the input name, id, and values.
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Otherwise all attributes may be passed explicitly.
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## Types
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This function accepts all HTML input types, considering that:
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* You may also set `type="select"` to render a `<select>` tag
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* `type="checkbox"` is used exclusively to render boolean values
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* For live file uploads, see `Phoenix.Component.live_file_input/1`
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See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input
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for more information. Unsupported types, such as hidden and radio,
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are best written directly in your templates.
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## Examples
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<.input field={@form[:email]} type="email" />
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<.input name="my-input" errors={["oh no!"]} />
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"""
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attr :id, :any, default: nil
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attr :name, :any
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attr :label, :string, default: nil
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attr :value, :any
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attr :type, :string,
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default: "text",
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values: ~w(checkbox color date datetime-local email file month number password
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range search select tel text textarea time url week)
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attr :field, Phoenix.HTML.FormField,
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doc: "a form field struct retrieved from the form, for example: @form[:email]"
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attr :errors, :list, default: []
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attr :checked, :boolean, doc: "the checked flag for checkbox inputs"
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attr :prompt, :string, default: nil, doc: "the prompt for select inputs"
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attr :options, :list, doc: "the options to pass to Phoenix.HTML.Form.options_for_select/2"
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attr :multiple, :boolean, default: false, doc: "the multiple flag for select inputs"
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attr :rest, :global,
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include: ~w(accept autocomplete capture cols disabled form list max maxlength min minlength
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multiple pattern placeholder readonly required rows size step)
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def input(%{field: %Phoenix.HTML.FormField{} = field} = assigns) do
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errors = if Phoenix.Component.used_input?(field), do: field.errors, else: []
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assigns
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|> assign(field: nil, id: assigns.id || field.id)
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|> assign(:errors, Enum.map(errors, &translate_error(&1)))
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|> assign_new(:name, fn -> if assigns.multiple, do: field.name <> "[]", else: field.name end)
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|> assign_new(:value, fn -> field.value end)
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|> input()
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end
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def input(%{type: "checkbox"} = assigns) do
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assigns =
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assign_new(assigns, :checked, fn ->
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Phoenix.HTML.Form.normalize_value("checkbox", assigns[:value])
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end)
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~H"""
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<div>
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<label class="flex items-center gap-4 text-sm leading-6 text-zinc-600">
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<input type="hidden" name={@name} value="false" disabled={@rest[:disabled]} />
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<input
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type="checkbox"
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id={@id}
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name={@name}
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value="true"
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checked={@checked}
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class="rounded border-zinc-300 text-zinc-900 focus:ring-0"
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{@rest}
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/>
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<%= @label %>
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</label>
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<.error :for={msg <- @errors}><%= msg %></.error>
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</div>
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"""
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end
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def input(%{type: "select"} = assigns) do
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~H"""
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<div>
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<.label for={@id}><%= @label %></.label>
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<select
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id={@id}
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name={@name}
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class="mt-2 block w-full rounded-md border border-gray-300 bg-white shadow-sm focus:border-zinc-400 focus:ring-0 sm:text-sm"
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multiple={@multiple}
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{@rest}
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>
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<option :if={@prompt} value=""><%= @prompt %></option>
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<%= Phoenix.HTML.Form.options_for_select(@options, @value) %>
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</select>
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<.error :for={msg <- @errors}><%= msg %></.error>
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</div>
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"""
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end
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def input(%{type: "textarea"} = assigns) do
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~H"""
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<div>
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<.label for={@id}><%= @label %></.label>
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<textarea
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id={@id}
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name={@name}
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class={[
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"mt-2 block w-full rounded-lg text-zinc-900 focus:ring-0 sm:text-sm sm:leading-6 min-h-[6rem]",
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@errors == [] && "border-zinc-300 focus:border-zinc-400",
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@errors != [] && "border-rose-400 focus:border-rose-400"
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]}
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{@rest}
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><%= Phoenix.HTML.Form.normalize_value("textarea", @value) %></textarea>
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<.error :for={msg <- @errors}><%= msg %></.error>
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</div>
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"""
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end
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# All other inputs text, datetime-local, url, password, etc. are handled here...
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def input(assigns) do
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~H"""
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<div>
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<.label for={@id}><%= @label %></.label>
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<input
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type={@type}
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name={@name}
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id={@id}
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value={Phoenix.HTML.Form.normalize_value(@type, @value)}
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class={[
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"mt-2 block w-full rounded-lg text-zinc-900 focus:ring-0 sm:text-sm sm:leading-6",
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@errors == [] && "border-zinc-300 focus:border-zinc-400",
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@errors != [] && "border-rose-400 focus:border-rose-400"
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]}
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{@rest}
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/>
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<.error :for={msg <- @errors}><%= msg %></.error>
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</div>
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"""
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end
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@doc """
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Renders a label.
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"""
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attr :for, :string, default: nil
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slot :inner_block, required: true
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def label(assigns) do
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~H"""
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<label for={@for} class="block text-sm font-semibold leading-6 text-zinc-800">
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<%= render_slot(@inner_block) %>
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</label>
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"""
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end
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@doc """
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Generates a generic error message.
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"""
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slot :inner_block, required: true
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def error(assigns) do
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~H"""
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<p class="mt-3 flex gap-3 text-sm leading-6 text-rose-600">
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<.icon name="hero-exclamation-circle-mini" class="mt-0.5 h-5 w-5 flex-none" />
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<%= render_slot(@inner_block) %>
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</p>
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"""
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end
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@doc """
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Renders a header with title.
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"""
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attr :class, :string, default: nil
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slot :inner_block, required: true
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slot :subtitle
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slot :actions
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def header(assigns) do
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~H"""
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<header class={[@actions != [] && "flex items-center justify-between gap-6", @class]}>
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<div>
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<h1 class="text-lg font-semibold leading-8 text-zinc-800">
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<%= render_slot(@inner_block) %>
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</h1>
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<p :if={@subtitle != []} class="mt-2 text-sm leading-6 text-zinc-600">
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<%= render_slot(@subtitle) %>
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</p>
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</div>
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<div class="flex-none"><%= render_slot(@actions) %></div>
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</header>
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"""
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end
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@doc ~S"""
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Renders a table with generic styling.
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## Examples
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<.table id="users" rows={@users}>
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<:col :let={user} label="id"><%= user.id %></:col>
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<:col :let={user} label="username"><%= user.username %></:col>
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</.table>
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"""
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attr :id, :string, required: true
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attr :rows, :list, required: true
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attr :row_id, :any, default: nil, doc: "the function for generating the row id"
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attr :row_click, :any, default: nil, doc: "the function for handling phx-click on each row"
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attr :row_item, :any,
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default: &Function.identity/1,
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doc: "the function for mapping each row before calling the :col and :action slots"
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slot :col, required: true do
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attr :label, :string
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end
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slot :action, doc: "the slot for showing user actions in the last table column"
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def table(assigns) do
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assigns =
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with %{rows: %Phoenix.LiveView.LiveStream{}} <- assigns do
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assign(assigns, row_id: assigns.row_id || fn {id, _item} -> id end)
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end
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~H"""
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<div class="overflow-y-auto px-4 sm:overflow-visible sm:px-0">
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<table class="w-[40rem] mt-11 sm:w-full">
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<thead class="text-sm text-left leading-6 text-zinc-500">
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<tr>
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<th :for={col <- @col} class="p-0 pb-4 pr-6 font-normal"><%= col[:label] %></th>
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<th :if={@action != []} class="relative p-0 pb-4">
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<span class="sr-only"><%= gettext("Actions") %></span>
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</th>
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</tr>
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</thead>
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<tbody
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id={@id}
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phx-update={match?(%Phoenix.LiveView.LiveStream{}, @rows) && "stream"}
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class="relative divide-y divide-zinc-100 border-t border-zinc-200 text-sm leading-6 text-zinc-700"
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>
|
||
<tr :for={row <- @rows} id={@row_id && @row_id.(row)} class="group hover:bg-zinc-50">
|
||
<td
|
||
:for={{col, i} <- Enum.with_index(@col)}
|
||
phx-click={@row_click && @row_click.(row)}
|
||
class={["relative p-0", @row_click && "hover:cursor-pointer"]}
|
||
>
|
||
<div class="block py-4 pr-6">
|
||
<span class="absolute -inset-y-px right-0 -left-4 group-hover:bg-zinc-50 sm:rounded-l-xl" />
|
||
<span class={["relative", i == 0 && "font-semibold text-zinc-900"]}>
|
||
<%= render_slot(col, @row_item.(row)) %>
|
||
</span>
|
||
</div>
|
||
</td>
|
||
<td :if={@action != []} class="relative w-14 p-0">
|
||
<div class="relative whitespace-nowrap py-4 text-right text-sm font-medium">
|
||
<span class="absolute -inset-y-px -right-4 left-0 group-hover:bg-zinc-50 sm:rounded-r-xl" />
|
||
<span
|
||
:for={action <- @action}
|
||
class="relative ml-4 font-semibold leading-6 text-zinc-900 hover:text-zinc-700"
|
||
>
|
||
<%= render_slot(action, @row_item.(row)) %>
|
||
</span>
|
||
</div>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
"""
|
||
end
|
||
|
||
@doc """
|
||
Renders a data list.
|
||
|
||
## Examples
|
||
|
||
<.list>
|
||
<:item title="Title"><%= @post.title %></:item>
|
||
<:item title="Views"><%= @post.views %></:item>
|
||
</.list>
|
||
"""
|
||
slot :item, required: true do
|
||
attr :title, :string, required: true
|
||
end
|
||
|
||
def list(assigns) do
|
||
~H"""
|
||
<div class="mt-14">
|
||
<dl class="-my-4 divide-y divide-zinc-100">
|
||
<div :for={item <- @item} class="flex gap-4 py-4 text-sm leading-6 sm:gap-8">
|
||
<dt class="w-1/4 flex-none text-zinc-500"><%= item.title %></dt>
|
||
<dd class="text-zinc-700"><%= render_slot(item) %></dd>
|
||
</div>
|
||
</dl>
|
||
</div>
|
||
"""
|
||
end
|
||
|
||
@doc """
|
||
Renders a back navigation link.
|
||
|
||
## Examples
|
||
|
||
<.back navigate={~p"/posts"}>Back to posts</.back>
|
||
"""
|
||
attr :navigate, :any, required: true
|
||
slot :inner_block, required: true
|
||
|
||
def back(assigns) do
|
||
~H"""
|
||
<div class="mt-16">
|
||
<.link
|
||
navigate={@navigate}
|
||
class="text-sm font-semibold leading-6 text-zinc-900 hover:text-zinc-700"
|
||
>
|
||
<.icon name="hero-arrow-left-solid" class="h-3 w-3" />
|
||
<%= render_slot(@inner_block) %>
|
||
</.link>
|
||
</div>
|
||
"""
|
||
end
|
||
|
||
@doc """
|
||
Renders a [Heroicon](https://heroicons.com).
|
||
|
||
Heroicons come in three styles – outline, solid, and mini.
|
||
By default, the outline style is used, but solid and mini may
|
||
be applied by using the `-solid` and `-mini` suffix.
|
||
|
||
You can customize the size and colors of the icons by setting
|
||
width, height, and background color classes.
|
||
|
||
Icons are extracted from the `deps/heroicons` directory and bundled within
|
||
your compiled app.css by the plugin in your `assets/tailwind.config.js`.
|
||
|
||
## Examples
|
||
|
||
<.icon name="hero-x-mark-solid" />
|
||
<.icon name="hero-arrow-path" class="ml-1 w-3 h-3 animate-spin" />
|
||
"""
|
||
attr :name, :string, required: true
|
||
attr :class, :string, default: nil
|
||
|
||
def icon(%{name: "hero-" <> _} = assigns) do
|
||
~H"""
|
||
<span class={[@name, @class]} />
|
||
"""
|
||
end
|
||
|
||
## JS Commands
|
||
|
||
def show(js \\ %JS{}, selector) do
|
||
JS.show(js,
|
||
to: selector,
|
||
time: 300,
|
||
transition:
|
||
{"transition-all transform ease-out duration-300",
|
||
"opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95",
|
||
"opacity-100 translate-y-0 sm:scale-100"}
|
||
)
|
||
end
|
||
|
||
def hide(js \\ %JS{}, selector) do
|
||
JS.hide(js,
|
||
to: selector,
|
||
time: 200,
|
||
transition:
|
||
{"transition-all transform ease-in duration-200",
|
||
"opacity-100 translate-y-0 sm:scale-100",
|
||
"opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"}
|
||
)
|
||
end
|
||
|
||
def show_modal(js \\ %JS{}, id) when is_binary(id) do
|
||
js
|
||
|> JS.show(to: "##{id}")
|
||
|> JS.show(
|
||
to: "##{id}-bg",
|
||
time: 300,
|
||
transition: {"transition-all transform ease-out duration-300", "opacity-0", "opacity-100"}
|
||
)
|
||
|> show("##{id}-container")
|
||
|> JS.add_class("overflow-hidden", to: "body")
|
||
|> JS.focus_first(to: "##{id}-content")
|
||
end
|
||
|
||
def hide_modal(js \\ %JS{}, id) do
|
||
js
|
||
|> JS.hide(
|
||
to: "##{id}-bg",
|
||
transition: {"transition-all transform ease-in duration-200", "opacity-100", "opacity-0"}
|
||
)
|
||
|> hide("##{id}-container")
|
||
|> JS.hide(to: "##{id}", transition: {"block", "block", "hidden"})
|
||
|> JS.remove_class("overflow-hidden", to: "body")
|
||
|> JS.pop_focus()
|
||
end
|
||
|
||
@doc """
|
||
Translates an error message using gettext.
|
||
"""
|
||
def translate_error({msg, opts}) do
|
||
# When using gettext, we typically pass the strings we want
|
||
# to translate as a static argument:
|
||
#
|
||
# # Translate the number of files with plural rules
|
||
# dngettext("errors", "1 file", "%{count} files", count)
|
||
#
|
||
# However the error messages in our forms and APIs are generated
|
||
# dynamically, so we need to translate them by calling Gettext
|
||
# with our gettext backend as first argument. Translations are
|
||
# available in the errors.po file (as we use the "errors" domain).
|
||
if count = opts[:count] do
|
||
Gettext.dngettext(ExmrWeb.Gettext, "errors", msg, msg, count, opts)
|
||
else
|
||
Gettext.dgettext(ExmrWeb.Gettext, "errors", msg, opts)
|
||
end
|
||
end
|
||
|
||
@doc """
|
||
Translates the errors for a field from a keyword list of errors.
|
||
"""
|
||
def translate_errors(errors, field) when is_list(errors) do
|
||
for {^field, {msg, opts}} <- errors, do: translate_error({msg, opts})
|
||
end
|
||
end
|