Refactor the PDF upload button to dynamically adjust its
appearance and behavior based on `_isPageReady` and
`_isPdfUploadInProgress` states. Add a spinner to indicate
upload progress and disable the `<InputFile>` component
during uploads or when the page is not ready.
Introduce `_isPdfUploadInProgress` state to prevent multiple
uploads and ensure consistent UI updates. Update the
`OnPdfFileSelectedAsync` method to handle this state,
including a `finally` block to reset it and trigger UI
updates.
Consolidate redundant code for disabled states and improve
conditional rendering for better maintainability. Enhance
visual feedback for loading states and make minor style
adjustments for consistency.
Introduced `_isPageReady` state to manage page readiness and conditionally render the PDF upload button. Disabled the upload functionality and added a loading spinner when the page is not ready. Updated `OnPdfFileSelectedAsync` to prevent uploads before readiness.
Modified the "No Document Loaded" section to use `_isPageReady` for conditional rendering. Added `SENDER_SAVE_EDIT_MIGRATION_PLAN.md` to the solution. Improved user experience with better feedback during loading states.
Replaced `DxPdfViewer` with a custom PDF rendering solution in `SenderPdfImageEditor` to improve flexibility and control. Added support for displaying placeholder messages and interactive signature fields. Introduced the `SenderPdfFieldOverlay` record to encapsulate field data.
Updated `SenderEditorPage` logic to manage page counts, image URLs, and field overlays. Added a method to estimate PDF page counts. Refactored field removal logic to use index-based operations.
Enhanced styling in `envelope-viewer.css` for improved layout and responsiveness. Updated localization files with new strings for page labels and placeholders. Adjusted JavaScript selectors in `envelope-editor.js` to support the new rendering approach.
Introduced a new `SenderEditorPage` with a modern UI for managing envelopes, uploading PDFs, and placing signature fields. Integrated `DevExpress.Blazor.PdfViewer` for PDF rendering and interaction.
Key features include:
- PDF upload, rendering, and validation.
- Signature field placement with normalized coordinates.
- Receiver management with validation and email suggestions.
- Envelope metadata handling (title, message).
- Save as draft and send functionality with validation.
- Edit mode for existing envelopes.
- Improved UX with dynamic elements and color-coded receivers.
- Localization support for multi-language UI.
Updated `_Imports.razor` to include necessary namespaces for DevExpress components and the new `PdfEditor` namespace.
