Implement structured desktop editing

apps/desktop/Cargo.toml

@@ -13,3 +13,7 @@ path = "src/main.rs"
 [dependencies]
 iced.workspace = true
 ironstorage.workspace = true
+zeroize.workspace = true
+
+[dev-dependencies]
+tempfile = "3"

apps/desktop/src/editor.rs

@@ -0,0 +1,154 @@
+//! Structured desktop editing state over storage-owned entry documents.
+
+use std::{collections::BTreeSet, fmt};
+
+use ironstorage::{
+    document::{
+        DocumentError, EntryDocument, EntryField, EntryFieldDraft, EntryFieldId, EntrySensitivity,
+    },
+    repository::SecretBytes,
+};
+
+pub struct EntryEditor {
+    document: EntryDocument,
+    revealed: BTreeSet<EntryFieldId>,
+    dirty: bool,
+}
+
+impl EntryEditor {
+    pub fn new(document: EntryDocument) -> Self {
+        Self {
+            document,
+            revealed: BTreeSet::new(),
+            dirty: false,
+        }
+    }
+
+    pub fn entry(&self) -> String {
+        self.document.path().to_string()
+    }
+
+    pub fn document(&self) -> &EntryDocument {
+        &self.document
+    }
+
+    pub fn fields(&self) -> &[EntryField] {
+        self.document.fields()
+    }
+
+    pub fn is_dirty(&self) -> bool {
+        self.dirty
+    }
+
+    pub fn is_revealed(&self, id: EntryFieldId) -> bool {
+        self.revealed.contains(&id)
+    }
+
+    pub fn toggle_reveal(&mut self, id: EntryFieldId) -> Result<(), DocumentError> {
+        let field = self
+            .document
+            .field(id)
+            .ok_or(DocumentError::UnknownField { id })?;
+        if field.metadata().sensitivity() != EntrySensitivity::Sensitive {
+            return Ok(());
+        }
+        if !self.revealed.remove(&id) {
+            self.revealed.insert(id);
+        }
+        Ok(())
+    }
+
+    pub fn update_raw(&mut self, id: EntryFieldId, value: &[u8]) -> Result<(), DocumentError> {
+        let unchanged = self
+            .document
+            .field(id)
+            .is_some_and(|field| field.contents().expose() == value);
+        if unchanged {
+            return Ok(());
+        }
+        self.document
+            .update(id, EntryFieldDraft::line(value.to_vec())?)?;
+        self.dirty = true;
+        Ok(())
+    }
+
+    pub fn add_after(&mut self, id: Option<EntryFieldId>) -> Result<(), DocumentError> {
+        let index = id
+            .and_then(|id| {
+                self.document
+                    .fields()
+                    .iter()
+                    .position(|field| field.id() == id)
+            })
+            .map_or(self.document.fields().len(), |index| index + 1);
+        self.document.add(index, EntryFieldDraft::blank())?;
+        self.dirty = true;
+        Ok(())
+    }
+
+    pub fn remove(&mut self, id: EntryFieldId) -> Result<(), DocumentError> {
+        self.document.remove(id)?;
+        self.revealed.remove(&id);
+        self.dirty = true;
+        Ok(())
+    }
+
+    pub fn move_up(&mut self, id: EntryFieldId) -> Result<(), DocumentError> {
+        let Some(index) = self
+            .document
+            .fields()
+            .iter()
+            .position(|field| field.id() == id)
+        else {
+            return Err(DocumentError::UnknownField { id });
+        };
+        if index > 0 {
+            self.document.reorder(id, index - 1)?;
+            self.dirty = true;
+        }
+        Ok(())
+    }
+
+    pub fn move_down(&mut self, id: EntryFieldId) -> Result<(), DocumentError> {
+        let Some(index) = self
+            .document
+            .fields()
+            .iter()
+            .position(|field| field.id() == id)
+        else {
+            return Err(DocumentError::UnknownField { id });
+        };
+        if index + 1 < self.document.fields().len() {
+            self.document.reorder(id, index + 1)?;
+            self.dirty = true;
+        }
+        Ok(())
+    }
+
+    pub fn replace_value(
+        &mut self,
+        id: EntryFieldId,
+        value: SecretBytes,
+    ) -> Result<(), DocumentError> {
+        self.document
+            .replace_field_value(id, value.expose().to_vec())?;
+        self.revealed.remove(&id);
+        self.dirty = true;
+        Ok(())
+    }
+
+    pub fn copy_value(&self, id: EntryFieldId) -> Result<SecretBytes, DocumentError> {
+        self.document.copy_field_value(id)
+    }
+}
+
+impl fmt::Debug for EntryEditor {
+    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
+        formatter
+            .debug_struct("EntryEditor")
+            .field("document", &self.document)
+            .field("revealed", &self.revealed)
+            .field("dirty", &self.dirty)
+            .finish()
+    }
+}