Implement a new core based on CodeMirror.
This commit is contained in:
parent
240e5f4e3d
commit
44ff4d3c1f
13 changed files with 679 additions and 425 deletions
227
Cargo.lock
generated
227
Cargo.lock
generated
|
@ -21,21 +21,41 @@ version = "0.4.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b585a98a234c46fc563103e9278c9391fde1f4e6850334da895d27edb9580f62"
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[[package]]
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name = "argh"
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||||
version = "0.1.3"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "ca1877e24cecacd700d469066e0160c4f8497cc5635367163f50c8beec820154"
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dependencies = [
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"argh_derive",
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"argh_shared",
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]
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[[package]]
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name = "argh_derive"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e742194e0f43fc932bcb801708c2b279d3ec8f527e3acda05a6a9f342c5ef764"
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dependencies = [
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"argh_shared",
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"heck",
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"proc-macro2 1.0.13",
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"quote 1.0.6",
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"syn 1.0.22",
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]
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[[package]]
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name = "argh_shared"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e1ba68f4276a778591e36a0c348a269888f3a177c8d2054969389e3b59611ff5"
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[[package]]
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name = "arrayref"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
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[[package]]
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name = "arrayvec"
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version = "0.4.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "cd9fd44efafa8690358b7408d253adf110036b88f55672a933f01d616ad9b1b9"
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dependencies = [
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"nodrop",
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]
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[[package]]
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name = "arrayvec"
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version = "0.5.1"
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@ -76,7 +96,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d8fb2d74254a3a0b5cac33ac9f8ed0e44aa50378d9dbb2e5d83bd21ed1dc2c8a"
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dependencies = [
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"arrayref",
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"arrayvec 0.5.1",
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"arrayvec",
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"constant_time_eq",
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]
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@ -140,11 +160,9 @@ dependencies = [
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[[package]]
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name = "filedescriptor"
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version = "0.7.1"
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source = "git+https://github.com/wez/wezterm#58686f925f0f4a0942452e8feb0ababd48ec936c"
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dependencies = [
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"anyhow",
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"libc",
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"thiserror",
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"winapi",
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]
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@ -165,15 +183,31 @@ dependencies = [
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"wasi",
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]
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[[package]]
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name = "heck"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
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dependencies = [
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"unicode-segmentation",
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]
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[[package]]
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name = "helix-core"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"ropey",
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"smallvec 1.4.0",
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]
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[[package]]
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name = "helix-term"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"argh",
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"helix-core",
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"termwiz",
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]
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@ -183,20 +217,6 @@ version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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[[package]]
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name = "lexical-core"
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version = "0.6.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f86d66d380c9c5a685aaac7a11818bdfa1f733198dfd9ec09c70b762cd12ad6f"
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dependencies = [
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"arrayvec 0.4.12",
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"bitflags",
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"cfg-if",
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"rustc_version",
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"ryu",
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"static_assertions",
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]
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[[package]]
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name = "libc"
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version = "0.2.70"
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@ -230,58 +250,16 @@ version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a64a92489e2744ce060c349162be1c5f33c6969234104dbd99ddb5feb08b8c15"
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[[package]]
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name = "nodrop"
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version = "0.1.14"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72ef4a56884ca558e5ddb05a1d1e7e1bfd9a68d9ed024c21704cc98872dae1bb"
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[[package]]
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name = "nom"
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version = "5.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0b471253da97532da4b61552249c521e01e736071f71c1a4f7ebbfbf0a06aad6"
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dependencies = [
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"lexical-core",
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"memchr",
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"version_check",
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]
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[[package]]
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name = "num"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b8536030f9fea7127f841b45bb6243b27255787fb4eb83958aa1ef9d2fdc0c36"
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dependencies = [
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"num-bigint",
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"num-complex",
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"num-integer",
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"num-iter",
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"num-rational",
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"num-traits",
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]
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[[package]]
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name = "num-bigint"
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version = "0.2.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "090c7f9998ee0ff65aa5b723e4009f7b217707f1fb5ea551329cc4d6231fb304"
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dependencies = [
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"autocfg",
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"num-integer",
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"num-traits",
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]
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[[package]]
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name = "num-complex"
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version = "0.2.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b6b19411a9719e753aff12e5187b74d60d3dc449ec3f4dc21e3989c3f554bc95"
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dependencies = [
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"autocfg",
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"num-traits",
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]
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[[package]]
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name = "num-derive"
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version = "0.2.5"
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@ -293,39 +271,6 @@ dependencies = [
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"syn 0.15.44",
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]
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[[package]]
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name = "num-integer"
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version = "0.1.42"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
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dependencies = [
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"autocfg",
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"num-traits",
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]
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[[package]]
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name = "num-iter"
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version = "0.1.40"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dfb0800a0291891dd9f4fe7bd9c19384f98f7fbe0cd0f39a2c6b88b9868bbc00"
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dependencies = [
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"autocfg",
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"num-integer",
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"num-traits",
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]
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[[package]]
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name = "num-rational"
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version = "0.2.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c000134b5dbf44adc5cb772486d335293351644b801551abe8f75c84cfa4aef"
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dependencies = [
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"autocfg",
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"num-bigint",
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"num-integer",
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"num-traits",
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]
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[[package]]
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name = "num-traits"
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version = "0.2.11"
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@ -510,6 +455,15 @@ version = "0.6.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
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[[package]]
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name = "ropey"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ba326a8508a4add47e7b260333aa2d896213a5f3572fde11ed6e9130241b7f71"
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dependencies = [
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"smallvec 0.6.13",
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]
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[[package]]
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name = "rust-argon2"
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version = "0.7.0"
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@ -522,21 +476,6 @@ dependencies = [
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"crossbeam-utils",
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]
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[[package]]
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name = "rustc_version"
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version = "0.2.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
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dependencies = [
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"semver",
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]
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[[package]]
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name = "ryu"
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version = "1.0.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
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[[package]]
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name = "semver"
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version = "0.9.0"
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@ -552,26 +491,6 @@ version = "0.7.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
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[[package]]
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name = "serde"
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version = "1.0.110"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
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dependencies = [
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"serde_derive",
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]
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[[package]]
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name = "serde_derive"
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version = "1.0.110"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
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dependencies = [
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"proc-macro2 1.0.13",
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"quote 1.0.6",
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"syn 1.0.22",
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]
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[[package]]
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name = "signal-hook"
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version = "0.1.15"
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@ -608,10 +527,10 @@ dependencies = [
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]
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[[package]]
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name = "static_assertions"
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version = "0.3.4"
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name = "smallvec"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7f3eb36b47e512f8f1c9e3d10c2c1965bc992bd9cdb024fa581e2194501c83d3"
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checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
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[[package]]
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name = "syn"
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@ -637,9 +556,9 @@ dependencies = [
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[[package]]
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name = "terminfo"
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version = "0.7.2"
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version = "0.7.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "12064715207074ac562f450722884f981268a916ce1eb21c5bda2c806c8fecfc"
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checksum = "76971977e6121664ec1b960d1313aacfa75642adc93b9d4d53b247bd4cb1747e"
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dependencies = [
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"dirs",
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"fnv",
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@ -660,7 +579,6 @@ dependencies = [
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[[package]]
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name = "termwiz"
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version = "0.9.0"
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source = "git+https://github.com/wez/wezterm#58686f925f0f4a0942452e8feb0ababd48ec936c"
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dependencies = [
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"anyhow",
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"base64 0.10.1",
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@ -672,15 +590,13 @@ dependencies = [
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"libc",
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"log",
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"memmem",
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"num",
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"num-derive",
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"num-traits",
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"ordered-float",
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"regex",
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"semver",
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"serde",
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"signal-hook",
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"smallvec",
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"smallvec 0.6.13",
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"terminfo",
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"termios",
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"unicode-segmentation",
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@ -690,26 +606,6 @@ dependencies = [
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"xi-unicode",
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]
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[[package]]
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name = "thiserror"
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version = "1.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5976891d6950b4f68477850b5b9e5aa64d955961466f9e174363f573e54e8ca7"
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dependencies = [
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"thiserror-impl",
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]
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[[package]]
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name = "thiserror-impl"
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version = "1.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ab81dbd1cd69cd2ce22ecfbdd3bdb73334ba25350649408cc6c085f46d89573d"
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dependencies = [
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"proc-macro2 1.0.13",
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"quote 1.0.6",
|
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"syn 1.0.22",
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]
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[[package]]
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name = "thread_local"
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version = "1.0.1"
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@ -758,7 +654,6 @@ checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
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[[package]]
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name = "vtparse"
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version = "0.2.2"
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source = "git+https://github.com/wez/wezterm#58686f925f0f4a0942452e8feb0ababd48ec936c"
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dependencies = [
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"utf8parse",
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]
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@ -78,3 +78,4 @@ conceal for markdown markers, etc
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codemirror uses offsets exclusively with Line being computed when necessary
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(with start/end extents)
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lines are temporarily cached in a lineCache
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@ -8,4 +8,6 @@ edition = "2018"
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[dependencies]
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ropey = "1.1.0"
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||||
anyhow = "1.0.31"
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smallvec = "1.4.0"
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# slab = "0.4.2"
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|
18
helix-core/src/buffer.rs
Normal file
18
helix-core/src/buffer.rs
Normal file
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@ -0,0 +1,18 @@
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use anyhow::Error;
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||||
use ropey::Rope;
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||||
use std::{env, fs::File, io::BufReader, path::PathBuf};
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||||
|
||||
pub struct Buffer {
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pub contents: Rope,
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||||
}
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impl Buffer {
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pub fn load(path: PathBuf) -> Result<Self, Error> {
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let current_dir = env::current_dir()?;
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|
||||
let contents = Rope::from_reader(BufReader::new(File::open(path)?))?;
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||||
|
||||
// TODO: create if not found
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||||
Ok(Buffer { contents })
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||||
}
|
||||
}
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|
@ -1,5 +1,13 @@
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|||
mod position;
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||||
mod range;
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||||
mod buffer;
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||||
mod selection;
|
||||
mod state;
|
||||
mod transaction;
|
||||
|
||||
use position::Position;
|
||||
use range::Range;
|
||||
pub use buffer::Buffer;
|
||||
|
||||
pub use selection::Range as SelectionRange;
|
||||
pub use selection::Selection;
|
||||
|
||||
pub use state::State;
|
||||
|
||||
pub use transaction::{Change, Transaction};
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||||
|
|
|
@ -1,27 +0,0 @@
|
|||
/// Represents a single point in a text buffer. Zero indexed.
|
||||
#[derive(Default, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
|
||||
pub struct Position {
|
||||
pub row: usize,
|
||||
pub col: usize,
|
||||
}
|
||||
|
||||
impl Position {
|
||||
pub fn new(row: usize, col: usize) -> Self {
|
||||
Self { row, col }
|
||||
}
|
||||
|
||||
pub fn is_zero(self) -> bool {
|
||||
self.row == 0 && self.col == 0
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_ordering() {
|
||||
// (0, 5) is less than (1, 0 w v f)
|
||||
assert!(Position::new(0, 5) < Position::new(1, 0));
|
||||
}
|
||||
}
|
|
@ -1,9 +0,0 @@
|
|||
use crate::Position;
|
||||
|
||||
#[derive(Clone, Copy, PartialEq, Eq)]
|
||||
pub struct Range {
|
||||
pub start: Position,
|
||||
pub end: Position,
|
||||
}
|
||||
|
||||
// range traversal iters
|
222
helix-core/src/selection.rs
Normal file
222
helix-core/src/selection.rs
Normal file
|
@ -0,0 +1,222 @@
|
|||
//! Selections are the primary editing construct. Even a single cursor is defined as an empty
|
||||
//! single selection range.
|
||||
//!
|
||||
//! All positioning is done via `char` offsets into the buffer.
|
||||
use smallvec::{smallvec, SmallVec};
|
||||
|
||||
#[inline]
|
||||
fn abs_difference(x: usize, y: usize) -> usize {
|
||||
if x < y {
|
||||
y - x
|
||||
} else {
|
||||
x - y
|
||||
}
|
||||
}
|
||||
|
||||
/// A single selection range. Anchor-inclusive, head-exclusive.
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||
pub struct Range {
|
||||
// TODO: optimize into u32
|
||||
/// The anchor of the range: the side that doesn't move when extending.
|
||||
pub anchor: usize,
|
||||
/// The head of the range, moved when extending.
|
||||
pub head: usize,
|
||||
}
|
||||
|
||||
impl Range {
|
||||
pub fn new(anchor: usize, head: usize) -> Self {
|
||||
Self { anchor, head }
|
||||
}
|
||||
|
||||
/// Start of the range.
|
||||
#[inline]
|
||||
pub fn from(&self) -> usize {
|
||||
std::cmp::min(self.anchor, self.head)
|
||||
}
|
||||
|
||||
/// End of the range.
|
||||
#[inline]
|
||||
pub fn to(&self) -> usize {
|
||||
std::cmp::max(self.anchor, self.head)
|
||||
}
|
||||
|
||||
/// `true` when head and anchor are at the same position.
|
||||
#[inline]
|
||||
pub fn is_empty(&self) -> bool {
|
||||
self.anchor == self.head
|
||||
}
|
||||
|
||||
/// Check two ranges for overlap.
|
||||
pub fn overlaps(&self, other: &Self) -> bool {
|
||||
// cursor overlap is checked differently
|
||||
if self.is_empty() {
|
||||
self.from() <= other.to()
|
||||
} else {
|
||||
self.from() < other.to()
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: map
|
||||
|
||||
/// Extend the range to cover at least `from` `to`.
|
||||
pub fn extend(&self, from: usize, to: usize) -> Self {
|
||||
if from <= self.anchor && to >= self.anchor {
|
||||
return Range {
|
||||
anchor: from,
|
||||
head: to,
|
||||
};
|
||||
}
|
||||
|
||||
Range {
|
||||
anchor: self.anchor,
|
||||
head: if abs_difference(from, self.anchor) > abs_difference(to, self.anchor) {
|
||||
from
|
||||
} else {
|
||||
to
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// groupAt
|
||||
}
|
||||
|
||||
/// A selection consists of one or more selection ranges.
|
||||
pub struct Selection {
|
||||
// TODO: decide how many ranges to inline SmallVec<[Range; 1]>
|
||||
ranges: Vec<Range>,
|
||||
primary_index: usize,
|
||||
}
|
||||
|
||||
impl Selection {
|
||||
// map
|
||||
// eq
|
||||
pub fn primary(&self) -> Range {
|
||||
self.ranges[self.primary_index]
|
||||
}
|
||||
|
||||
/// Ensure selection containing only the primary selection.
|
||||
pub fn as_single(self) -> Self {
|
||||
if self.ranges.len() == 1 {
|
||||
self
|
||||
} else {
|
||||
Self {
|
||||
ranges: vec![self.ranges[self.primary_index]],
|
||||
primary_index: 0,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// add_range // push
|
||||
// replace_range
|
||||
|
||||
/// Constructs a selection holding a single range.
|
||||
pub fn single(anchor: usize, head: usize) -> Self {
|
||||
Self {
|
||||
ranges: vec![Range { anchor, head }],
|
||||
primary_index: 0,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn new(ranges: Vec<Range>, primary_index: usize) -> Self {
|
||||
fn normalize(mut ranges: Vec<Range>, primary_index: usize) -> Selection {
|
||||
let primary = ranges[primary_index];
|
||||
ranges.sort_unstable_by_key(|range| range.from());
|
||||
let mut primary_index = ranges.iter().position(|&range| range == primary).unwrap();
|
||||
|
||||
let mut result: Vec<Range> = Vec::new();
|
||||
|
||||
// TODO: we could do with one vec by removing elements as we mutate
|
||||
|
||||
for (i, range) in ranges.into_iter().enumerate() {
|
||||
// if previous value exists
|
||||
if let Some(prev) = result.last_mut() {
|
||||
// and we overlap it
|
||||
if range.overlaps(prev) {
|
||||
let from = prev.from();
|
||||
let to = std::cmp::max(range.to(), prev.to());
|
||||
|
||||
if i <= primary_index {
|
||||
primary_index -= 1
|
||||
}
|
||||
|
||||
// merge into previous
|
||||
if range.anchor > range.head {
|
||||
prev.anchor = to;
|
||||
prev.head = from;
|
||||
} else {
|
||||
prev.anchor = from;
|
||||
prev.head = to;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
result.push(range)
|
||||
}
|
||||
|
||||
Selection {
|
||||
ranges: result,
|
||||
primary_index,
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: only normalize if needed (any ranges out of order)
|
||||
normalize(ranges, primary_index)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: checkSelection -> check if valid for doc length
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_create_normalizes_and_merges() {
|
||||
let sel = Selection::new(
|
||||
vec![
|
||||
Range::new(10, 12),
|
||||
Range::new(6, 7),
|
||||
Range::new(4, 5),
|
||||
Range::new(3, 4),
|
||||
Range::new(0, 6),
|
||||
Range::new(7, 8),
|
||||
Range::new(9, 13),
|
||||
Range::new(13, 14),
|
||||
],
|
||||
0,
|
||||
);
|
||||
|
||||
let res = sel
|
||||
.ranges
|
||||
.into_iter()
|
||||
.map(|range| format!("{}/{}", range.anchor, range.head))
|
||||
.collect::<Vec<String>>()
|
||||
.join(",");
|
||||
|
||||
assert_eq!(res, "0/6,6/7,7/8,9/13,13/14");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_create_merges_adjacent_points() {
|
||||
let sel = Selection::new(
|
||||
vec![
|
||||
Range::new(10, 12),
|
||||
Range::new(12, 12),
|
||||
Range::new(12, 12),
|
||||
Range::new(10, 10),
|
||||
Range::new(8, 10),
|
||||
],
|
||||
0,
|
||||
);
|
||||
|
||||
let res = sel
|
||||
.ranges
|
||||
.into_iter()
|
||||
.map(|range| format!("{}/{}", range.anchor, range.head))
|
||||
.collect::<Vec<String>>()
|
||||
.join(",");
|
||||
|
||||
assert_eq!(res, "8/10,10/12");
|
||||
}
|
||||
}
|
38
helix-core/src/state.rs
Normal file
38
helix-core/src/state.rs
Normal file
|
@ -0,0 +1,38 @@
|
|||
use crate::{Buffer, Selection};
|
||||
|
||||
/// A state represents the current editor state of a single buffer.
|
||||
pub struct State {
|
||||
// TODO: maybe doc: ?
|
||||
buffer: Buffer,
|
||||
selection: Selection,
|
||||
}
|
||||
|
||||
impl State {
|
||||
pub fn new(buffer: Buffer) -> Self {
|
||||
Self {
|
||||
buffer,
|
||||
selection: Selection::single(0, 0),
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: buf/selection accessors
|
||||
|
||||
// update/transact
|
||||
// replaceSelection (transaction that replaces selection)
|
||||
// changeByRange
|
||||
// changes
|
||||
// slice
|
||||
//
|
||||
// getters:
|
||||
// tabSize
|
||||
// indentUnit
|
||||
// languageDataAt()
|
||||
//
|
||||
// config:
|
||||
// indentation
|
||||
// tabSize
|
||||
// lineUnit
|
||||
// syntax
|
||||
// foldable
|
||||
// changeFilter/transactionFilter
|
||||
}
|
25
helix-core/src/transaction.rs
Normal file
25
helix-core/src/transaction.rs
Normal file
|
@ -0,0 +1,25 @@
|
|||
pub struct Change {
|
||||
from: usize,
|
||||
to: usize,
|
||||
insert: Option<String>,
|
||||
}
|
||||
|
||||
impl Change {
|
||||
pub fn new(from: usize, to: usize, insert: Option<String>) {
|
||||
// old_extent, new_extent, insert
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Transaction {}
|
||||
|
||||
// ChangeSpec = Change | ChangeSet | Vec<Change>
|
||||
// ChangeDesc as a ChangeSet without text: can't be applied, cheaper to store.
|
||||
// ChangeSet = ChangeDesc with Text
|
||||
pub struct ChangeSet {
|
||||
// basically Vec<ChangeDesc> where ChangeDesc = (current len, replacement len?)
|
||||
// (0, n>0) for insertion, (n>0, 0) for deletion, (>0, >0) for replacement
|
||||
sections: Vec<(usize, isize)>,
|
||||
}
|
||||
//
|
||||
// trait Transaction
|
||||
// trait StrictTransaction
|
|
@ -15,5 +15,8 @@ path = "src/main.rs"
|
|||
# path = "src/line.rs"
|
||||
|
||||
[dependencies]
|
||||
termwiz = { git = "https://github.com/wez/wezterm", features = ["widgets"] }
|
||||
# termwiz = { git = "https://github.com/wez/wezterm", features = ["widgets"] }
|
||||
termwiz = { path = "../../wezterm/termwiz", default-features = false, features = ["widgets"] }
|
||||
anyhow = "1.0.31"
|
||||
argh = "0.1.3"
|
||||
helix-core = { path = "../helix-core" }
|
||||
|
|
281
helix-term/src/editor.rs
Normal file
281
helix-term/src/editor.rs
Normal file
|
@ -0,0 +1,281 @@
|
|||
#![allow(unused)]
|
||||
use anyhow::Error;
|
||||
use termwiz::caps::Capabilities;
|
||||
use termwiz::cell::AttributeChange;
|
||||
use termwiz::color::{AnsiColor, ColorAttribute, RgbColor};
|
||||
use termwiz::input::*;
|
||||
use termwiz::surface::Change;
|
||||
use termwiz::terminal::{buffered::BufferedTerminal, SystemTerminal, Terminal};
|
||||
use termwiz::widgets::*;
|
||||
|
||||
use crate::Args;
|
||||
|
||||
use std::{env, path::PathBuf};
|
||||
|
||||
use helix_core::Buffer;
|
||||
|
||||
/// This is a widget for our application
|
||||
pub struct MainScreen {}
|
||||
|
||||
impl MainScreen {
|
||||
pub fn new() -> Self {
|
||||
Self {}
|
||||
}
|
||||
}
|
||||
|
||||
impl Widget for MainScreen {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
true // handled it all
|
||||
}
|
||||
|
||||
/// Draw ourselves into the surface provided by RenderArgs
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
// args.surface.add_change(Change::ClearScreen(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0x31, 0x1B, 0x92),
|
||||
// AnsiColor::Black.into(),
|
||||
// ),
|
||||
// ));
|
||||
// args.surface
|
||||
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0xB3, 0x88, 0xFF),
|
||||
// AnsiColor::Purple.into(),
|
||||
// ),
|
||||
// )));
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
let mut constraints = layout::Constraints::default();
|
||||
constraints.child_orientation = layout::ChildOrientation::Vertical;
|
||||
constraints
|
||||
}
|
||||
}
|
||||
|
||||
pub struct BufferComponent<'a> {
|
||||
text: String,
|
||||
buffer: &'a mut Buffer,
|
||||
|
||||
first_line: usize,
|
||||
}
|
||||
|
||||
impl<'a> BufferComponent<'a> {
|
||||
/// Initialize the widget with the input text
|
||||
pub fn new(buffer: &'a mut Buffer) -> Self {
|
||||
Self {
|
||||
buffer,
|
||||
text: String::new(),
|
||||
|
||||
first_line: 0,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> Widget for BufferComponent<'a> {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
match event {
|
||||
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Char('k'),
|
||||
..
|
||||
})) => {
|
||||
self.first_line = self.first_line.saturating_sub(1);
|
||||
}
|
||||
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Char('j'),
|
||||
..
|
||||
})) => {
|
||||
self.first_line = self.first_line.saturating_add(1);
|
||||
}
|
||||
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Enter,
|
||||
..
|
||||
})) => {
|
||||
self.text.push_str("\r\n");
|
||||
}
|
||||
WidgetEvent::Input(InputEvent::Paste(s)) => {
|
||||
self.text.push_str(&s);
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
|
||||
true // handled it all
|
||||
}
|
||||
|
||||
/// Draw ourselves into the surface provided by RenderArgs
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
args.surface
|
||||
.add_change(Change::ClearScreen(ColorAttribute::Default));
|
||||
|
||||
// args.surface
|
||||
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0x11, 0x00, 0xFF),
|
||||
// AnsiColor::Purple.into(),
|
||||
// ),
|
||||
// )));
|
||||
let (_width, height) = args.surface.dimensions();
|
||||
|
||||
for line in self.buffer.contents.lines_at(self.first_line).take(height) {
|
||||
args.surface
|
||||
.add_change(unsafe { String::from_utf8_unchecked(line.bytes().collect()) });
|
||||
args.surface.add_change("\r");
|
||||
}
|
||||
// args.surface
|
||||
// .add_change(format!("🤷 surface size is {:?}\r\n", dims));
|
||||
// args.surface.add_change(self.text.clone());
|
||||
|
||||
// Place the cursor at the end of the text.
|
||||
// A more advanced text editing widget would manage the
|
||||
// cursor position differently.
|
||||
*args.cursor = CursorShapeAndPosition {
|
||||
coords: args.surface.cursor_position().into(),
|
||||
shape: termwiz::surface::CursorShape::SteadyBar,
|
||||
..Default::default()
|
||||
};
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
let mut c = layout::Constraints::default();
|
||||
c.set_valign(layout::VerticalAlignment::Top);
|
||||
c
|
||||
}
|
||||
}
|
||||
|
||||
pub struct StatusLine {}
|
||||
|
||||
impl StatusLine {
|
||||
pub fn new() -> Self {
|
||||
StatusLine {}
|
||||
}
|
||||
}
|
||||
impl Widget for StatusLine {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
true
|
||||
}
|
||||
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
args.surface.add_change(Change::ClearScreen(
|
||||
ColorAttribute::TrueColorWithPaletteFallback(
|
||||
RgbColor::new(0xFF, 0xFF, 0xFF),
|
||||
AnsiColor::Black.into(),
|
||||
),
|
||||
));
|
||||
args.surface
|
||||
.add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
ColorAttribute::TrueColorWithPaletteFallback(
|
||||
RgbColor::new(0x00, 0x00, 0x00),
|
||||
AnsiColor::Black.into(),
|
||||
),
|
||||
)));
|
||||
|
||||
args.surface.add_change(" helix");
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
*layout::Constraints::default()
|
||||
.set_fixed_height(1)
|
||||
.set_valign(layout::VerticalAlignment::Bottom)
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Editor {
|
||||
terminal: BufferedTerminal<SystemTerminal>,
|
||||
|
||||
buffer: Option<Buffer>,
|
||||
}
|
||||
|
||||
impl Editor {
|
||||
pub fn new(mut args: Args) -> Result<Self, Error> {
|
||||
// Create a terminal
|
||||
let caps = Capabilities::new_from_env()?;
|
||||
let mut terminal = BufferedTerminal::new(SystemTerminal::new(caps)?)?;
|
||||
|
||||
let mut editor = Editor {
|
||||
terminal,
|
||||
buffer: None,
|
||||
};
|
||||
|
||||
if let Some(file) = args.files.pop() {
|
||||
editor.open(file)?;
|
||||
}
|
||||
|
||||
Ok(editor)
|
||||
}
|
||||
|
||||
pub fn open(&mut self, path: PathBuf) -> Result<(), Error> {
|
||||
let buffer = Buffer::load(path)?;
|
||||
self.buffer = Some(buffer);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn run(&mut self) -> Result<(), Error> {
|
||||
// Start with an empty string; typing into the app will
|
||||
// update this string.
|
||||
let mut typed_text = String::new();
|
||||
|
||||
{
|
||||
let buf = &mut self.terminal;
|
||||
// Put the terminal in raw mode + alternate screen
|
||||
buf.terminal().enter_alternate_screen()?;
|
||||
buf.terminal().set_raw_mode()?;
|
||||
|
||||
// Set up the UI
|
||||
let mut ui = Ui::new();
|
||||
|
||||
let root_id = ui.set_root(MainScreen::new());
|
||||
let buffer_id =
|
||||
ui.add_child(root_id, BufferComponent::new(self.buffer.as_mut().unwrap()));
|
||||
// let root_id = ui.set_root(Buffer::new(&mut typed_text));
|
||||
ui.add_child(root_id, StatusLine::new());
|
||||
ui.set_focus(buffer_id);
|
||||
|
||||
loop {
|
||||
ui.process_event_queue()?;
|
||||
|
||||
// After updating and processing all of the widgets, compose them
|
||||
// and render them to the screen.
|
||||
if ui.render_to_screen(buf)? {
|
||||
// We have more events to process immediately; don't block waiting
|
||||
// for input below, but jump to the top of the loop to re-run the
|
||||
// updates.
|
||||
continue;
|
||||
}
|
||||
// Compute an optimized delta to apply to the terminal and display it
|
||||
buf.flush()?;
|
||||
|
||||
// Wait for user input
|
||||
match buf.terminal().poll_input(None) {
|
||||
Ok(Some(InputEvent::Resized { rows, cols })) => {
|
||||
// FIXME: this is working around a bug where we don't realize
|
||||
// that we should redraw everything on resize in BufferedTerminal.
|
||||
buf.add_change(Change::ClearScreen(Default::default()));
|
||||
buf.resize(cols, rows);
|
||||
}
|
||||
Ok(Some(input)) => match input {
|
||||
InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Escape,
|
||||
..
|
||||
}) => {
|
||||
// Quit the app when escape is pressed
|
||||
break;
|
||||
}
|
||||
input @ _ => {
|
||||
// Feed input into the Ui
|
||||
ui.queue_event(WidgetEvent::Input(input));
|
||||
}
|
||||
},
|
||||
Ok(None) => {}
|
||||
Err(e) => {
|
||||
print!("{:?}\r\n", e);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// After we've stopped the full screen raw terminal,
|
||||
// print out the final edited value of the input text.
|
||||
println!("The text you entered: {}", typed_text);
|
||||
Ok(())
|
||||
}
|
||||
}
|
|
@ -1,227 +1,24 @@
|
|||
//! This example shows how to make a basic widget that accumulates
|
||||
//! text input and renders it to the screen
|
||||
#![allow(unused)]
|
||||
mod editor;
|
||||
|
||||
use editor::Editor;
|
||||
|
||||
use argh::FromArgs;
|
||||
use std::{env, path::PathBuf};
|
||||
|
||||
use anyhow::Error;
|
||||
use termwiz::caps::Capabilities;
|
||||
use termwiz::cell::AttributeChange;
|
||||
use termwiz::color::{AnsiColor, ColorAttribute, RgbColor};
|
||||
use termwiz::input::*;
|
||||
use termwiz::surface::Change;
|
||||
use termwiz::terminal::buffered::BufferedTerminal;
|
||||
use termwiz::terminal::{new_terminal, Terminal};
|
||||
use termwiz::widgets::*;
|
||||
|
||||
/// This is a widget for our application
|
||||
struct MainScreen {}
|
||||
|
||||
impl MainScreen {
|
||||
pub fn new() -> Self {
|
||||
Self {}
|
||||
}
|
||||
}
|
||||
|
||||
impl Widget for MainScreen {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
true // handled it all
|
||||
}
|
||||
|
||||
/// Draw ourselves into the surface provided by RenderArgs
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
// args.surface.add_change(Change::ClearScreen(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0x31, 0x1B, 0x92),
|
||||
// AnsiColor::Black.into(),
|
||||
// ),
|
||||
// ));
|
||||
// args.surface
|
||||
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0xB3, 0x88, 0xFF),
|
||||
// AnsiColor::Purple.into(),
|
||||
// ),
|
||||
// )));
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
let mut constraints = layout::Constraints::default();
|
||||
constraints.child_orientation = layout::ChildOrientation::Vertical;
|
||||
constraints
|
||||
}
|
||||
}
|
||||
|
||||
struct Buffer<'a> {
|
||||
/// Holds the input text that we wish the widget to display
|
||||
text: &'a mut String,
|
||||
}
|
||||
|
||||
impl<'a> Buffer<'a> {
|
||||
/// Initialize the widget with the input text
|
||||
pub fn new(text: &'a mut String) -> Self {
|
||||
Self { text }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> Widget for Buffer<'a> {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
match event {
|
||||
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Char(c),
|
||||
..
|
||||
})) => self.text.push(*c),
|
||||
WidgetEvent::Input(InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Enter,
|
||||
..
|
||||
})) => {
|
||||
self.text.push_str("\r\n");
|
||||
}
|
||||
WidgetEvent::Input(InputEvent::Paste(s)) => {
|
||||
self.text.push_str(&s);
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
|
||||
true // handled it all
|
||||
}
|
||||
|
||||
/// Draw ourselves into the surface provided by RenderArgs
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
args.surface
|
||||
.add_change(Change::ClearScreen(ColorAttribute::Default));
|
||||
|
||||
// args.surface
|
||||
// .add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
// ColorAttribute::TrueColorWithPaletteFallback(
|
||||
// RgbColor::new(0x11, 0x00, 0xFF),
|
||||
// AnsiColor::Purple.into(),
|
||||
// ),
|
||||
// )));
|
||||
let dims = args.surface.dimensions();
|
||||
args.surface
|
||||
.add_change(format!("🤷 surface size is {:?}\r\n", dims));
|
||||
args.surface.add_change(self.text.clone());
|
||||
|
||||
// Place the cursor at the end of the text.
|
||||
// A more advanced text editing widget would manage the
|
||||
// cursor position differently.
|
||||
*args.cursor = CursorShapeAndPosition {
|
||||
coords: args.surface.cursor_position().into(),
|
||||
shape: termwiz::surface::CursorShape::SteadyBar,
|
||||
..Default::default()
|
||||
};
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
let mut c = layout::Constraints::default();
|
||||
c.set_valign(layout::VerticalAlignment::Top);
|
||||
c
|
||||
}
|
||||
}
|
||||
|
||||
struct StatusLine {}
|
||||
|
||||
impl StatusLine {
|
||||
pub fn new() -> Self {
|
||||
StatusLine {}
|
||||
}
|
||||
}
|
||||
impl Widget for StatusLine {
|
||||
fn process_event(&mut self, event: &WidgetEvent, _args: &mut UpdateArgs) -> bool {
|
||||
true
|
||||
}
|
||||
|
||||
fn render(&mut self, args: &mut RenderArgs) {
|
||||
args.surface.add_change(Change::ClearScreen(
|
||||
ColorAttribute::TrueColorWithPaletteFallback(
|
||||
RgbColor::new(0xFF, 0xFF, 0xFF),
|
||||
AnsiColor::Black.into(),
|
||||
),
|
||||
));
|
||||
args.surface
|
||||
.add_change(Change::Attribute(AttributeChange::Foreground(
|
||||
ColorAttribute::TrueColorWithPaletteFallback(
|
||||
RgbColor::new(0x00, 0x00, 0x00),
|
||||
AnsiColor::Black.into(),
|
||||
),
|
||||
)));
|
||||
|
||||
args.surface.add_change(" helix");
|
||||
}
|
||||
|
||||
fn get_size_constraints(&self) -> layout::Constraints {
|
||||
*layout::Constraints::default()
|
||||
.set_fixed_height(1)
|
||||
.set_valign(layout::VerticalAlignment::Bottom)
|
||||
}
|
||||
#[derive(FromArgs)]
|
||||
/// A post-modern text editor.
|
||||
pub struct Args {
|
||||
#[argh(positional)]
|
||||
files: Vec<PathBuf>,
|
||||
}
|
||||
|
||||
fn main() -> Result<(), Error> {
|
||||
// Start with an empty string; typing into the app will
|
||||
// update this string.
|
||||
let mut typed_text = String::new();
|
||||
let args: Args = argh::from_env();
|
||||
let mut editor = Editor::new(args)?;
|
||||
|
||||
{
|
||||
// Create a terminal and put it into full screen raw mode
|
||||
let caps = Capabilities::new_from_env()?;
|
||||
let mut buf = BufferedTerminal::new(new_terminal(caps)?)?;
|
||||
buf.terminal().enter_alternate_screen()?;
|
||||
buf.terminal().set_raw_mode()?;
|
||||
|
||||
// Set up the UI
|
||||
let mut ui = Ui::new();
|
||||
|
||||
let root_id = ui.set_root(MainScreen::new());
|
||||
let buffer_id = ui.add_child(root_id, Buffer::new(&mut typed_text));
|
||||
// let root_id = ui.set_root(Buffer::new(&mut typed_text));
|
||||
ui.add_child(root_id, StatusLine::new());
|
||||
ui.set_focus(buffer_id);
|
||||
|
||||
loop {
|
||||
ui.process_event_queue()?;
|
||||
|
||||
// After updating and processing all of the widgets, compose them
|
||||
// and render them to the screen.
|
||||
if ui.render_to_screen(&mut buf)? {
|
||||
// We have more events to process immediately; don't block waiting
|
||||
// for input below, but jump to the top of the loop to re-run the
|
||||
// updates.
|
||||
continue;
|
||||
}
|
||||
// Compute an optimized delta to apply to the terminal and display it
|
||||
buf.flush()?;
|
||||
|
||||
// Wait for user input
|
||||
match buf.terminal().poll_input(None) {
|
||||
Ok(Some(InputEvent::Resized { rows, cols })) => {
|
||||
// FIXME: this is working around a bug where we don't realize
|
||||
// that we should redraw everything on resize in BufferedTerminal.
|
||||
buf.add_change(Change::ClearScreen(Default::default()));
|
||||
buf.resize(cols, rows);
|
||||
}
|
||||
Ok(Some(input)) => match input {
|
||||
InputEvent::Key(KeyEvent {
|
||||
key: KeyCode::Escape,
|
||||
..
|
||||
}) => {
|
||||
// Quit the app when escape is pressed
|
||||
break;
|
||||
}
|
||||
input @ _ => {
|
||||
// Feed input into the Ui
|
||||
ui.queue_event(WidgetEvent::Input(input));
|
||||
}
|
||||
},
|
||||
Ok(None) => {}
|
||||
Err(e) => {
|
||||
print!("{:?}\r\n", e);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// After we've stopped the full screen raw terminal,
|
||||
// print out the final edited value of the input text.
|
||||
println!("The text you entered: {}", typed_text);
|
||||
editor.run()?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
Loading…
Add table
Reference in a new issue