shinyModals/GUIDE.html at main · drknowhow/shinyModals · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>shinyModals Complete Guide</title>
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</head>
<body>
    <div class="container">
        <h1>shinyModals Complete Guide</h1>
        <p class="subtitle">A comprehensive guide to using modern modal dialogs in Shiny</p>
        <div class="metadata">
            <strong>Version:</strong> 0.4.0 | <strong>Date:</strong> December 10, 2025
        </div>

        <div class="toc">
            <h2>Table of Contents</h2>
            <ul>
                <li><a href="#getting-started">Getting Started</a></li>
                <li><a href="#basic-usage">Basic Usage</a></li>
                <li><a href="#modal-components">Modal Components</a></li>
                <li><a href="#modal-features">Modal Features</a></li>
                <li><a href="#themes">Themes</a></li>
                <li><a href="#notifications">Notifications</a></li>
                <li><a href="#advanced-examples">Advanced Examples</a></li>
                <li><a href="#api-reference">API Reference</a></li>
            </ul>
        </div>

        <hr>

        <h2 id="getting-started">Getting Started</h2>

        <h3>Installation</h3>
        <pre><code># Install from local source
devtools::install_local("path/to/shinyModals")

# Or from GitHub (if published)
# devtools::install_github("username/shinyModals")</code></pre>

        <h3>Setup in Your App</h3>
        <p>Every Shiny app using shinyModals must call <code>use_shiny_modals()</code> once in the UI:</p>
        <pre><code>library(shiny)
library(shinyModals)

ui <- fluidPage(
  use_shiny_modals(),  # Initialize modals

  # Your app content here
  actionButton("show_modal", "Open Modal")
)

server <- function(input, output, session) {
  # Your server logic here
}

shinyApp(ui, server)</code></pre>

        <h2 id="basic-usage">Basic Usage</h2>

        <h3>Creating and Showing a Modal</h3>
        <pre><code>ui <- fluidPage(
  use_shiny_modals(),

  actionButton("show_modal", "Show Modal"),

  shiny_modal(
    id = "my_modal",
    header = modal_header("Welcome"),
    body = modal_body(p("This is a simple modal")),
    footer = modal_footer(
      actionButton("close_btn", "Close", class = "btn-primary")
    )
  )
)

server <- function(input, output, session) {
  observeEvent(input$show_modal, {
    show_modal("my_modal")
  })

  observeEvent(input$close_btn, {
    hide_modal("my_modal")
  })
}</code></pre>

        <h3>Modal Control Functions</h3>
        <pre><code># Show a modal
show_modal("my_modal")

# Hide a modal
hide_modal("my_modal")

# Toggle a modal (show if hidden, hide if shown)
toggle_modal("my_modal")

# Hide all open modals
hide_all_modals()</code></pre>

        <h2 id="modal-components">Modal Components</h2>

        <h3>Header Component</h3>
        <p>The header appears at the top of the modal. It typically contains a title and close button.</p>
        <pre><code>modal_header(
  title = "Modal Title",
  icon = icon("star"),        # Optional: add an icon
  close_button = TRUE         # Optional: show/hide close button (default: TRUE)
)</code></pre>

        <p><strong>Parameters:</strong></p>
        <ul>
            <li><code>title</code> (character): The header text</li>
            <li><code>icon</code> (shiny.tag, optional): An icon from Font Awesome using <code>icon()</code></li>
            <li><code>close_button</code> (logical): Whether to show the × button (default: TRUE)</li>
        </ul>

        <p><strong>Examples:</strong></p>
        <pre><code># Simple header
modal_header("Settings")

# Header with icon
modal_header("User Profile", icon = icon("user"))

# Header without close button
modal_header("Important", close_button = FALSE)</code></pre>

        <h3>Body Component</h3>
        <p>The body contains the main content of the modal. It can include any Shiny UI elements.</p>
        <pre><code>modal_body(
  h3("Content Title"),
  p("This is the main content of the modal."),
  textInput("name", "Enter your name"),
  # Any Shiny UI elements
)</code></pre>

        <p><strong>Features:</strong></p>
        <ul>
            <li>Overflow control (scrollable content)</li>
            <li>Flexible sizing</li>
            <li>Supports any Shiny input/output widgets</li>
        </ul>

        <h3>Footer Component</h3>
        <p>The footer typically contains action buttons.</p>
        <pre><code>modal_footer(
  actionButton("confirm", "Confirm", class = "btn-primary"),
  actionButton("cancel", "Cancel", class = "btn-secondary")
)</code></pre>

        <p><strong>Tips:</strong></p>
        <ul>
            <li>Use <code>class = "btn-primary"</code> for primary actions (green)</li>
            <li>Use <code>class = "btn-secondary"</code> for secondary actions (gray)</li>
            <li>Use <code>class = "btn-danger"</code> for destructive actions (red)</li>
            <li>Leave empty for no footer</li>
        </ul>

        <h2 id="modal-features">Modal Features</h2>

        <h3>Size Control</h3>
        <p>Control the width of your modal with preset sizes or custom values.</p>
        <pre><code># Using preset sizes
shiny_modal(
  id = "large_modal",
  header = modal_header("Large Modal"),
  body = modal_body("Content"),
  size = "l"  # Options: "xs", "s", "m", "l", "xl"
)

# Custom sizes
shiny_modal(
  id = "custom_modal",
  header = modal_header("Custom Size"),
  body = modal_body("Content"),
  size = "600px"  # Any CSS width value: px, %, vw, etc.
)</code></pre>

        <p><strong>Preset Sizes:</strong></p>
        <ul>
            <li><code>"xs"</code> - 300px (very small)</li>
            <li><code>"s"</code> - 450px (small)</li>
            <li><code>"m"</code> - 600px (medium, default)</li>
            <li><code>"l"</code> - 800px (large)</li>
            <li><code>"xl"</code> - 1000px (extra large)</li>
        </ul>

        <h3>Position Control</h3>
        <p>Display modals from different positions on the screen.</p>
        <pre><code>shiny_modal(
  id = "positioned_modal",
  header = modal_header("Title"),
  body = modal_body("Content"),
  position = "top"  # Options: "center", "left", "right", "top", "bottom"
)</code></pre>

        <p><strong>Positions:</strong></p>
        <ul>
            <li><code>"center"</code> - Center of screen (default)</li>
            <li><code>"top"</code> - Top of screen</li>
            <li><code>"bottom"</code> - Bottom of screen</li>
            <li><code>"left"</code> - Left side of screen</li>
            <li><code>"right"</code> - Right side of screen</li>
        </ul>

        <h3>Backdrop Effects</h3>
        <p>Control the background appearance when a modal is open.</p>
        <pre><code>shiny_modal(
  id = "modal_with_backdrop",
  header = modal_header("Title"),
  body = modal_body("Content"),
  backdrop_effect = "blur"  # Options: "fade", "blur", "none"
)</code></pre>

        <p><strong>Effects:</strong></p>
        <ul>
            <li><code>"fade"</code> - Darken the background (default)</li>
            <li><code>"blur"</code> - Blur the background (modern look)</li>
            <li><code>"none"</code> - No effect on background</li>
        </ul>

        <h3>Animations</h3>
        <p>Choose how the modal appears.</p>
        <pre><code>shiny_modal(
  id = "animated_modal",
  header = modal_header("Title"),
  body = modal_body("Content"),
  animation = "scale"  # Options: "fade", "scale", "slide"
)</code></pre>

        <p><strong>Animations:</strong></p>
        <ul>
            <li><code>"fade"</code> - Simple fade in</li>
            <li><code>"scale"</code> - Grow from center</li>
            <li><code>"slide"</code> - Slide up from bottom</li>
        </ul>

        <h3>Overflow Control</h3>
        <p>Control how content behaves when it exceeds the modal height.</p>
        <pre><code>shiny_modal(
  id = "scrollable_modal",
  header = modal_header("Title"),
  body = modal_body(
    # Long content here
    p(paste(rep("Lorem ipsum dolor sit amet...", 50), collapse = "\n"))
  ),
  overflow = "auto"  # Options: "auto", "scroll", "hidden", "visible"
)</code></pre>

        <p><strong>Options:</strong></p>
        <ul>
            <li><code>"auto"</code> - Scrollbar appears only when needed (default)</li>
            <li><code>"scroll"</code> - Always show scrollbar</li>
            <li><code>"hidden"</code> - No scrollbar, content clips</li>
            <li><code>"visible"</code> - Content can overflow modal bounds</li>
        </ul>

        <h3>Draggable Modals</h3>
        <p>Allow users to drag the modal around the screen.</p>
        <pre><code>shiny_modal(
  id = "draggable_modal",
  header = modal_header("Drag me!"),
  body = modal_body("Click the header and drag"),
  draggable = TRUE
)</code></pre>

        <p><strong>Features:</strong></p>
        <ul>
            <li>Click and hold the header to drag</li>
            <li>Position resets when modal reopens</li>
            <li>Works with all other features</li>
        </ul>

        <h2 id="themes">Themes</h2>

        <h3>Preset Themes</h3>
        <p>Choose from 12 beautiful pre-designed themes:</p>
        <pre><code>shiny_modal(
  id = "themed_modal",
  header = modal_header("Themed Modal"),
  body = modal_body("This modal uses a preset theme"),
  theme = modal_theme_preset("ocean")
)</code></pre>

        <p><strong>Available Themes:</strong></p>
        <ol>
            <li><strong>default</strong> - Clean, minimal design</li>
            <li><strong>dark</strong> - Dark background with light text</li>
            <li><strong>ocean</strong> - Blue gradient, calm feel</li>
            <li><strong>sunset</strong> - Orange/red gradient, warm</li>
            <li><strong>forest</strong> - Green tones, natural look</li>
            <li><strong>minimal</strong> - Ultra-clean, white on white</li>
            <li><strong>neon</strong> - Bright colors, modern</li>
            <li><strong>corporate</strong> - Professional blue, business</li>
            <li><strong>warm</strong> - Amber/orange tones, inviting</li>
            <li><strong>cool</strong> - Cyan/blue tones, fresh</li>
            <li><strong>rose</strong> - Pink/rose tones, elegant</li>
            <li><strong>glass</strong> - Glassmorphism effect, transparent</li>
        </ol>

        <h3>Custom Themes</h3>
        <p>Create your own theme using CSS variables:</p>
        <pre><code>custom_theme <- modal_theme(
  header_bg = "#2c3e50",           # Header background color
  header_text = "white",            # Header text color
  body_bg = "#ecf0f1",             # Body background color
  body_text = "#2c3e50",           # Body text color
  border_color = "#34495e",        # Border color
  border_radius = "8px",           # Corner rounding
  shadow = "0 10px 30px rgba(0,0,0,0.3)"  # Box shadow
)

shiny_modal(
  id = "custom_modal",
  header = modal_header("Custom Theme"),
  body = modal_body("Your content"),
  theme = custom_theme
)</code></pre>

        <h2 id="notifications">Notifications</h2>

        <p>Notifications are pre-styled modals for common user messages.</p>

        <h3>Success Notification</h3>
        <pre><code>notification_success(
  id = "success_notif",
  title = "Success!",
  message = "Your changes have been saved.",
  button_text = "OK",
  glow = FALSE
)</code></pre>

        <h3>Error Notification</h3>
        <pre><code>notification_error(
  id = "error_notif",
  title = "Error",
  message = "Something went wrong. Please try again.",
  button_text = "Dismiss",
  glow = TRUE
)</code></pre>

        <h3>Warning Notification</h3>
        <pre><code>notification_warning(
  id = "warning_notif",
  title = "Warning",
  message = "This action will delete 5 items. Continue?",
  button_text = "I understand"
)</code></pre>

        <h3>Info Notification</h3>
        <pre><code>notification_info(
  id = "info_notif",
  title = "Information",
  message = "New features are available. Update your app.",
  button_text = "Learn More",
  auto_dismiss = TRUE
)</code></pre>

        <h3>Confirmation Notification</h3>
        <pre><code>notification_confirm(
  id = "confirm_notif",
  title = "Delete Item?",
  message = "Are you sure? This cannot be undone.",
  confirm_text = "Yes, Delete",
  cancel_text = "No, Cancel",
  glow = TRUE
)

# In server:
observeEvent(input$confirm_notif_confirm, {
  # Handle confirmation
  showNotification("Item deleted!", type = "message")
  hide_modal("confirm_notif")
})

observeEvent(input$confirm_notif_cancel, {
  hide_modal("confirm_notif")
})</code></pre>

        <h3>Custom Buttons</h3>
        <pre><code>notification_success(
  id = "custom_buttons_notif",
  title = "Success!",
  message = "What would you like to do next?",
  buttons = list(
    actionButton("btn_home", "Go Home", class = "btn-primary"),
    actionButton("btn_edit", "Edit Item", class = "btn-info"),
    actionButton("btn_close", "Close", class = "btn-secondary")
  )
)

# In server:
observeEvent(input$btn_home, { hide_modal("custom_buttons_notif") })
observeEvent(input$btn_edit, { hide_modal("custom_buttons_notif") })</code></pre>

        <h2 id="advanced-examples">Advanced Examples</h2>

        <h3>Modal with Input Validation</h3>
        <pre><code>ui <- fluidPage(
  use_shiny_modals(),
  actionButton("show_form", "Show Form"),
  shiny_modal(
    id = "form_modal",
    header = modal_header("User Form"),
    body = modal_body(
      textInput("username", "Username"),
      textInput("email", "Email"),
      textOutput("validation_message")
    ),
    footer = modal_footer(
      actionButton("submit_form", "Submit", class = "btn-primary"),
      actionButton("cancel_form", "Cancel", class = "btn-secondary")
    ),
    theme = modal_theme_preset("ocean")
  )
)

server <- function(input, output, session) {
  observeEvent(input$show_form, {
    show_modal("form_modal")
  })

  observeEvent(input$submit_form, {
    if (input$username == "") {
      output$validation_message <- renderText("Please enter username")
      return()
    }

    if (!grepl("^[^@]+@[^@]+$", input$email)) {
      output$validation_message <- renderText("Invalid email format")
      return()
    }

    showNotification("Form submitted!", type = "message")
    hide_modal("form_modal")
  })
}</code></pre>

        <h3>Nested Modals (Stacking)</h3>
        <pre><code>ui <- fluidPage(
  use_shiny_modals(),
  actionButton("open_1", "Open Modal 1"),

  shiny_modal(id = "modal_1", ...),
  shiny_modal(id = "modal_2", ...),
  shiny_modal(id = "modal_3", ...)
)

server <- function(input, output, session) {
  observeEvent(input$open_1, { show_modal("modal_1") })
  observeEvent(input$open_2, { show_modal("modal_2") })
  observeEvent(input$open_3, { show_modal("modal_3") })
}</code></pre>

        <h3>Confirmation Workflow</h3>
        <pre><code>notification_confirm(
  id = "delete_confirm",
  title = "Delete Item?",
  message = "This action cannot be undone.",
  confirm_text = "Yes, Delete",
  cancel_text = "No, Keep It",
  glow = TRUE
)

# Server handlers:
observeEvent(input$delete_confirm_confirm, {
  # Perform deletion
  output$status <- renderText("Item deleted!")
  hide_modal("delete_confirm")
})

observeEvent(input$delete_confirm_cancel, {
  output$status <- renderText("Deletion cancelled")
  hide_modal("delete_confirm")
})</code></pre>

        <h2 id="api-reference">API Reference</h2>

        <h3>Core Functions</h3>

        <h4>use_shiny_modals()</h4>
        <p>Initialize modal system (required once per app)</p>
        <pre><code>use_shiny_modals()</code></pre>

        <h4>shiny_modal()</h4>
        <p>Create a custom modal</p>
        <pre><code>shiny_modal(
  id,                                # character, required
  header = NULL,                     # modal_header()
  body = NULL,                       # modal_body()
  footer = NULL,                     # modal_footer()
  size = "m",                        # "xs", "s", "m", "l", "xl", or custom CSS width
  position = "center",               # "center", "left", "right", "top", "bottom"
  backdrop_effect = "fade",          # "fade", "blur", "none"
  animation = "fade",                # "fade", "scale", "slide"
  overflow = "auto",                 # "auto", "scroll", "hidden", "visible"
  draggable = FALSE,                 # logical
  close_on_backdrop_click = TRUE,    # logical
  theme = NULL                       # modal_theme() or modal_theme_preset()
)</code></pre>

        <h4>Modal Control</h4>
        <pre><code>show_modal(id)           # Display a modal
hide_modal(id)           # Hide a modal
toggle_modal(id)         # Toggle modal visibility
hide_all_modals()        # Hide all open modals</code></pre>

        <h3>Notification Functions</h3>

        <pre><code>notification_success(id, title, message, button_text="OK", auto_dismiss=FALSE, position="center", glow=FALSE, buttons=NULL)

notification_error(id, title, message, button_text="OK", auto_dismiss=FALSE, position="center", glow=FALSE, buttons=NULL)

notification_warning(id, title, message, button_text="OK", auto_dismiss=FALSE, position="center", glow=FALSE, buttons=NULL)

notification_info(id, title, message, button_text="OK", auto_dismiss=FALSE, position="center", glow=FALSE, buttons=NULL)

notification_confirm(id, title, message, confirm_text="Confirm", cancel_text="Cancel", position="center", glow=FALSE, buttons=NULL)</code></pre>

        <h3>Theme Functions</h3>

        <pre><code>modal_theme(header_bg=NULL, header_text=NULL, body_bg=NULL, body_text=NULL, border_color=NULL, border_radius=NULL, shadow=NULL)

modal_theme_preset(name)  # one of 12 theme names</code></pre>

        <hr>

        <h2>Tips & Best Practices</h2>

        <ul>
            <li><strong>Always Initialize:</strong> Call <code>use_shiny_modals()</code> once in your UI</li>
            <li><strong>Unique IDs:</strong> Each modal must have a unique <code>id</code></li>
            <li><strong>Button Classes:</strong> Use <code>.btn-primary</code>, <code>.btn-secondary</code>, <code>.btn-danger</code></li>
            <li><strong>Auto-dismiss:</strong> Use for non-critical information only</li>
            <li><strong>Glow Effect:</strong> Reserve for important alerts and confirmations</li>
            <li><strong>Preset Themes:</strong> Start with presets, customize with <code>modal_theme()</code></li>
            <li><strong>Nested Modals:</strong> Z-index managed automatically</li>
            <li><strong>Accessibility:</strong> All modals close with ESC key</li>
            <li><strong>Responsive:</strong> Works on desktop and mobile</li>
        </ul>

        <h2>Demo Application</h2>

        <p>Run the demo to see all features in action:</p>
        <pre><code>source(system.file("examples", "demo_app.R", package = "shinyModals"))</code></pre>

        <footer>
            <p><strong>shinyModals v0.4.0</strong> | Generated December 10, 2025</p>
            <p>A modern modal dialog system for Shiny applications</p>
        </footer>
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