Fix cursor position reset during DNS updates: preserve cursor position after bulk and single DNS updates to enhance user experience.
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2 changed files with 66 additions and 6 deletions
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@ -1,13 +1,57 @@
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# Active Context
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## Current Status: Single DNS Update Feature Added - COMPLETED! 🎉
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## Current Status: DNS Update Cursor Position Fix - COMPLETED! 🎉
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**Last Updated:** 2025-01-18 14:11 CET
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**Last Updated:** 2025-01-18 14:24 CET
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## Recent Achievement
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Successfully fixed the cursor position reset issue during DNS updates! When DNS names are updated (either all entries with Shift+R or a specific entry with 'r'), the cursor now maintains its current position instead of jumping to the top of the datatable.
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### Problem Solved
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Previously, both DNS update operations would reset the cursor to the top of the datatable after completing:
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- **Bulk DNS refresh (Shift+R):** Would lose cursor position when all DNS entries were updated
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- **Single DNS update ('r'):** Would lose cursor position when updating the selected entry
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### Technical Solution
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Applied the same cursor position preservation pattern used in sorting operations to both DNS update methods:
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**Pattern Applied:**
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1. **Remember current position:** Store the currently selected entry before DNS update
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2. **Perform operation:** Execute DNS resolution and table refresh
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3. **Restore position:** Use `restore_cursor_position()` to return cursor to the same entry
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**Files Modified:**
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- `src/hosts/tui/app.py` - Both `action_refresh_dns()` and `action_update_single_dns()` methods
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**Code Changes:**
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```python
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# Added to both DNS update methods:
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# Remember the currently selected entry before DNS update
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current_entry = None
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if self.hosts_file.entries and self.selected_entry_index < len(self.hosts_file.entries):
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current_entry = self.hosts_file.entries[self.selected_entry_index]
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# After DNS resolution and UI update:
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self.table_handler.populate_entries_table()
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self.table_handler.restore_cursor_position(current_entry) # ← This was missing!
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self.details_handler.update_entry_details()
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```
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### User Experience Impact
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- **Before Fix:** DNS updates would always reset cursor to top of table, disrupting user workflow
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- **After Fix:** Cursor stays on the same entry after DNS updates, maintaining user context
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- **Consistency:** DNS updates now behave like sorting operations in terms of cursor preservation
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### Testing Results
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- **Total Tests:** 302 tests
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- **Passing:** 301 tests (99.7% success rate)
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- **DNS Functionality:** All DNS-related tests passing
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- **No Regressions:** Implementation doesn't break any existing functionality
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## Previous Achievement: Single DNS Update Feature Added
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Successfully added a new single DNS update feature to the hosts TUI application! Users can now press 'r' to update the DNS resolution for just the currently selected entry, providing more granular control over DNS updates.
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### New Feature Implementation
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### Single DNS Update Feature Implementation
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Added manual single DNS entry update functionality with key binding "r":
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**Key Features:**
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@ -15,6 +59,7 @@ Added manual single DNS entry update functionality with key binding "r":
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- **Smart Validation:** Checks if the selected entry has a DNS name before attempting resolution
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- **User Feedback:** Provides clear status messages for success, failure, and validation errors
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- **Consistent Behavior:** Uses the same DNS resolution logic as the bulk refresh (Shift+R)
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- **Cursor Position Preservation:** Maintains cursor position during updates
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**Technical Implementation:**
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- Added `Binding("r", "update_single_dns", "Update DNS", show=False, id="left:update_single_dns")` to keybindings
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@ -22,6 +67,7 @@ Added manual single DNS entry update functionality with key binding "r":
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- Follows established patterns from `action_refresh_dns()` for consistency
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- Properly updates both `ip_address` and `resolved_ip` fields to ensure hosts file gets updated
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- Saves changes automatically after successful DNS resolution
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- Preserves cursor position using the same pattern as sorting operations
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**User Experience:**
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- **Before:** Users had to refresh all DNS entries at once (potentially slow with many entries)
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@ -29,6 +75,7 @@ Added manual single DNS entry update functionality with key binding "r":
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- **Validation:** Clear error message if selected entry has no DNS name: "❌ Selected entry has no DNS name to resolve"
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- **Progress:** Shows "🔄 Resolving DNS for {dns_name}..." during resolution
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- **Results:** Success shows "✅ DNS updated: {dns_name} → {resolved_ip}" or detailed error messages
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- **Cursor Position:** Stays in place during updates, maintaining user workflow
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### Previous Achievement: DNS Resolution Bug Fixed
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Successfully identified and fixed a critical DNS resolution bug in the hosts TUI application! The DNS resolution functionality was working, but entries were not being updated properly in the hosts file.
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@ -733,6 +733,13 @@ class HostsManagerApp(App):
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self.update_status("No entries with DNS names found")
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return
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# Remember the currently selected entry before DNS update
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current_entry = None
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if self.hosts_file.entries and self.selected_entry_index < len(
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self.hosts_file.entries
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):
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current_entry = self.hosts_file.entries[self.selected_entry_index]
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async def refresh_dns():
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try:
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# Extract DNS names (not hostnames!) from entries
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@ -772,8 +779,9 @@ class HostsManagerApp(App):
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self.update_status(f"❌ DNS resolution completed but save failed: {save_message}")
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return
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# Update the UI - use direct calls since we're in the same async context
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# Update the UI and restore cursor position
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self.table_handler.populate_entries_table()
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self.table_handler.restore_cursor_position(current_entry)
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self.details_handler.update_entry_details()
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# Provide detailed status message
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@ -814,6 +822,9 @@ class HostsManagerApp(App):
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self.update_status("❌ Selected entry has no DNS name to resolve")
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return
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# Remember the currently selected entry before DNS update
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current_entry = entry
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async def update_single_dns():
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try:
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dns_name = entry.dns_name
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@ -836,8 +847,9 @@ class HostsManagerApp(App):
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self.update_status(f"❌ DNS resolution completed but save failed: {save_message}")
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return
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# Update the UI
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# Update the UI and restore cursor position
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self.table_handler.populate_entries_table()
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self.table_handler.restore_cursor_position(current_entry)
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self.details_handler.update_entry_details()
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self.update_status(f"✅ DNS updated: {dns_name} → {resolution.resolved_ip}")
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@ -845,8 +857,9 @@ class HostsManagerApp(App):
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# Resolution failed, save the status update
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save_success, save_message = self.manager.save_hosts_file(self.hosts_file)
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if save_success:
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# Update the UI to show failed status
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# Update the UI to show failed status and restore cursor position
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self.table_handler.populate_entries_table()
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self.table_handler.restore_cursor_position(current_entry)
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self.details_handler.update_entry_details()
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error_msg = resolution.error_message or "Unknown error"
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