refactor: tables V2 (#749)

* refactor: move to new data table implementation

* more work towards refactor

* move disk and temp over, fix longstanding bug with disk and temp if removing the last value and selected

* work towards porting over CPU

work towards porting over CPU

fix typo

partially port over cpu, fix some potentially inefficient concat_string calls

more work towards cpu widget migration

some refactoring

* sortable data

sortable data

more refactoring

some sort refactoring

more refactoringgggg

column refactoring

renaming and reorganizing

more refactoring regarding column logic

add sort arrows again

* move over sort menu

* port over process

port over process

precommit

temp

temp two, remember to squash

work

fix broken ltr calculation and CPU hiding

add back row styling

temp

fix a bunch of issues, get proc working

more fixes around click

fix frozen issues

* fix dd process killing

* revert some of the persistent config changes from #257

* fix colouring for trees

* fix missing entries in tree

* keep columns if there is no data

* add and remove tests

* Fix ellipsis

1 files changed, 274 insertions, 0 deletions

diff --git a/src/app/widgets/process_table/proc_widget_data.rs b/src/app/widgets/process_table/proc_widget_data.rs
new file mode 100644
index 00000000..4957c87f
--- /dev/null
+++ b/src/app/widgets/process_table/proc_widget_data.rs
@@ -0,0 +1,274 @@
+use std::{
+    cmp::{max, Ordering},
+    fmt::Display,
+};
+
+use concat_string::concat_string;
+use tui::{text::Text, widgets::Row};
+
+use crate::{
+    app::data_harvester::processes::ProcessHarvest,
+    canvas::Painter,
+    components::data_table::{DataTableColumn, DataToCell},
+    data_conversion::{binary_byte_string, dec_bytes_per_second_string, dec_bytes_string},
+    utils::gen_util::truncate_text,
+    Pid,
+};
+
+use super::proc_widget_column::ProcColumn;
+
+#[derive(Clone)]
+enum IdType {
+    Name(String),
+    Command(String),
+}
+
+#[derive(Clone)]
+pub struct Id {
+    id_type: IdType,
+    prefix: Option<String>,
+}
+
+impl Id {
+    /// Returns the ID as a lowercase [`String`], with no prefix. This is primarily useful for
+    /// cases like sorting where we treat everything as the same case (e.g. `Discord` comes before
+    /// `dkms`).
+    pub fn to_lowercase(&self) -> String {
+        match &self.id_type {
+            IdType::Name(name) => name.to_lowercase(),
+            IdType::Command(cmd) => cmd.to_lowercase(),
+        }
+    }
+
+    /// Return the ID as a borrowed [`str`] with no prefix.
+    pub fn as_str(&self) -> &str {
+        match &self.id_type {
+            IdType::Name(name) => name.as_str(),
+            IdType::Command(cmd) => cmd.as_str(),
+        }
+    }
+
+    /// Returns the ID as a [`String`] with prefix.
+    pub fn to_prefixed_string(&self) -> String {
+        if let Some(prefix) = &self.prefix {
+            concat_string!(
+                prefix,
+                match &self.id_type {
+                    IdType::Name(name) => name,
+                    IdType::Command(cmd) => cmd,
+                }
+            )
+        } else {
+            match &self.id_type {
+                IdType::Name(name) => name.to_string(),
+                IdType::Command(cmd) => cmd.to_string(),
+            }
+        }
+    }
+}
+
+impl Display for Id {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(self.as_str())
+    }
+}
+
+// TODO: Can reduce this to 32 bytes.
+#[derive(PartialEq, Clone)]
+pub enum MemUsage {
+    Percent(f64),
+    Bytes(u64),
+}
+
+impl PartialOrd for MemUsage {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        match (self, other) {
+            (MemUsage::Percent(a), MemUsage::Percent(b)) => a.partial_cmp(b),
+            (MemUsage::Bytes(a), MemUsage::Bytes(b)) => a.partial_cmp(b),
+            _ => unreachable!(),
+        }
+    }
+}
+
+impl Display for MemUsage {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            MemUsage::Percent(percent) => f.write_fmt(format_args!("{:.1}%", percent)),
+            MemUsage::Bytes(bytes) => f.write_str(&binary_byte_string(*bytes)),
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct ProcWidgetData {
+    pub pid: Pid,
+    pub ppid: Option<Pid>,
+    pub id: Id,
+    pub cpu_usage_percent: f64,
+    pub mem_usage: MemUsage,
+    pub rps: u64,
+    pub wps: u64,
+    pub total_read: u64,
+    pub total_write: u64,
+    pub process_state: String,
+    pub process_char: char,
+    #[cfg(target_family = "unix")]
+    pub user: String,
+    pub num_similar: u64,
+    pub disabled: bool,
+}
+
+impl ProcWidgetData {
+    pub fn from_data(process: &ProcessHarvest, is_command: bool, is_mem_percent: bool) -> Self {
+        let id = Id {
+            id_type: if is_command {
+                IdType::Command(process.command.clone())
+            } else {
+                IdType::Name(process.name.clone())
+            },
+            prefix: None,
+        };
+
+        let mem_usage = if is_mem_percent {
+            MemUsage::Percent(process.mem_usage_percent)
+        } else {
+            MemUsage::Bytes(process.mem_usage_bytes)
+        };
+
+        Self {
+            pid: process.pid,
+            ppid: process.parent_pid,
+            id,
+            cpu_usage_percent: process.cpu_usage_percent,
+            mem_usage,
+            rps: process.read_bytes_per_sec,
+            wps: process.write_bytes_per_sec,
+            total_read: process.total_read_bytes,
+            total_write: process.total_write_bytes,
+            process_state: process.process_state.0.clone(),
+            process_char: process.process_state.1,
+            #[cfg(target_family = "unix")]
+            user: process.user.to_string(),
+            num_similar: 1,
+            disabled: false,
+        }
+    }
+
+    pub fn num_similar(mut self, num_similar: u64) -> Self {
+        self.num_similar = num_similar;
+        self
+    }
+
+    pub fn disabled(mut self, disabled: bool) -> Self {
+        self.disabled = disabled;
+        self
+    }
+
+    pub fn prefix(mut self, prefix: Option<String>) -> Self {
+        self.id.prefix = prefix;
+        self
+    }
+
+    pub fn add(&mut self, other: &Self) {
+        self.cpu_usage_percent += other.cpu_usage_percent;
+        self.mem_usage = match (&self.mem_usage, &other.mem_usage) {
+            (MemUsage::Percent(a), MemUsage::Percent(b)) => MemUsage::Percent(a + b),
+            (MemUsage::Bytes(a), MemUsage::Bytes(b)) => MemUsage::Bytes(a + b),
+            (MemUsage::Percent(_), MemUsage::Bytes(_))
+            | (MemUsage::Bytes(_), MemUsage::Percent(_)) => {
+                unreachable!("trying to add together two different memory usage types!")
+            }
+        };
+        self.rps += other.rps;
+        self.wps += other.wps;
+        self.total_read += other.total_read;
+        self.total_write += other.total_write;
+    }
+
+    fn to_string(&self, column: &ProcColumn) -> String {
+        match column {
+            ProcColumn::CpuPercent => format!("{:.1}%", self.cpu_usage_percent),
+            ProcColumn::MemoryVal | ProcColumn::MemoryPercent => self.mem_usage.to_string(),
+            ProcColumn::Pid => self.pid.to_string(),
+            ProcColumn::Count => self.num_similar.to_string(),
+            ProcColumn::Name | ProcColumn::Command => self.id.to_prefixed_string(),
+            ProcColumn::ReadPerSecond => dec_bytes_per_second_string(self.rps),
+            ProcColumn::WritePerSecond => dec_bytes_per_second_string(self.wps),
+            ProcColumn::TotalRead => dec_bytes_string(self.total_read),
+            ProcColumn::TotalWrite => dec_bytes_string(self.total_write),
+            ProcColumn::State => self.process_char.to_string(),
+            ProcColumn::User => {
+                #[cfg(target_family = "unix")]
+                {
+                    self.user.clone()
+                }
+                #[cfg(not(target_family = "unix"))]
+                {
+                    "".to_string()
+                }
+            }
+        }
+    }
+}
+
+impl DataToCell<ProcColumn> for ProcWidgetData {
+    fn to_cell<'a>(&'a self, column: &ProcColumn, calculated_width: u16) -> Option<Text<'a>> {
+        Some(truncate_text(
+            &match column {
+                ProcColumn::CpuPercent => {
+                    format!("{:.1}%", self.cpu_usage_percent)
+                }
+                ProcColumn::MemoryVal | ProcColumn::MemoryPercent => self.mem_usage.to_string(),
+                ProcColumn::Pid => self.pid.to_string(),
+                ProcColumn::Count => self.num_similar.to_string(),
+                ProcColumn::Name | ProcColumn::Command => self.id.to_prefixed_string(),
+                ProcColumn::ReadPerSecond => dec_bytes_per_second_string(self.rps),
+                ProcColumn::WritePerSecond => dec_bytes_per_second_string(self.wps),
+                ProcColumn::TotalRead => dec_bytes_string(self.total_read),
+                ProcColumn::TotalWrite => dec_bytes_string(self.total_write),
+                ProcColumn::State => {
+                    if calculated_width < 8 {
+                        self.process_char.to_string()
+                    } else {
+                        self.process_state.clone()
+                    }
+                }
+                ProcColumn::User => {
+                    #[cfg(target_family = "unix")]
+                    {
+                        self.user.clone()
+                    }
+                    #[cfg(not(target_family = "unix"))]
+                    {
+                        "".to_string()
+                    }
+                }
+            },
+            calculated_width,
+        ))
+    }
+
+    #[inline(always)]
+    fn style_row<'a>(&self, row: Row<'a>, painter: &Painter) -> Row<'a> {
+        if self.disabled {
+            row.style(painter.colours.disabled_text_style)
+        } else {
+            row
+        }
+    }
+
+    fn column_widths<C: DataTableColumn<ProcColumn>>(data: &[Self], columns: &[C]) -> Vec<u16>
+    where
+        Self: Sized,
+    {
+        let mut widths = vec![0; columns.len()];
+
+        for d in data {
+            for (w, c) in widths.iter_mut().zip(columns) {
+                *w = max(*w, d.to_string(c.inner()).len() as u16);
+            }
+        }
+
+        widths
+    }
+}