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local ui = require('java.ui.utils')

local class = require('java-core.utils.class')

local JdtlsClient = require('java-core.ls.clients.jdtls-client')

local RefactorCommands = require('java-refactor.refactor')

local notify = require('java-core.utils.notify')

local List = require('java-core.utils.list')

local lsp_utils = require('java-core.utils.lsp')

---@class java-refactor.Action

---@field client vim.lsp.Client

---@field jdtls java-core.JdtlsClient

local Action = class()

---@param client vim.lsp.Client

function Action:_init(client)

self.client = client

self.jdtls = JdtlsClient(client)

self.refactor = RefactorCommands(client)

end

---@class java-refactor.RenameAction

---@field length number

---@field offset number

---@field uri string

---@param params java-refactor.RenameAction[]

function Action:rename(params)

for _, rename in ipairs(params) do

local buffer = vim.uri_to_bufnr(rename.uri)

local line

vim.api.nvim_buf_call(buffer, function()

line = vim.fn.byte2line(rename.offset)

end)

local start_char = rename.offset - vim.fn.line2byte(line) + 1

vim.api.nvim_win_set_cursor(0, { line, start_char })

vim.lsp.buf.rename(nil, {

name = 'jdtls',

bufnr = buffer,

})

end

---@param params nvim.CodeActionParamsResponse

function Action:generate_constructor(params)

local status = self.jdtls:java_check_constructors_status(params.params)

if not status or not status.constructors then

return

end

local selected_constructor = ui.select(

'Select super class constructor(s).',

status.constructors,

function(constructor)

return string.format('%s %s', constructor.name, table.concat(constructor.parameters, ', '))

end

)

if not selected_constructor then

return

end

local selected_fields = ui.multi_select('Select Fields:', status.fields, function(field)

return field.name

end)

local edit = self.jdtls:java_generate_constructor({

context = params.params,

constructors = { selected_constructor },

fields = selected_fields or {},

})

vim.lsp.util.apply_workspace_edit(edit, 'utf-8')

end

---@param params nvim.CodeActionParamsResponse

function Action:generate_to_string(params)

local status = self.jdtls:java_check_to_string_status(params.params)

if status.exists then

local prompt = string.format(

'Method "toString()" already exists in the Class %s. Do you want to replace the implementation?',

status.type

)

local choice = ui.select(prompt, { 'Replace', 'Cancel' })

if choice ~= 'Replace' then

return

end

local fields = ui.multi_select(

'Select the fields to include in the toString() method.',

status.fields,

function(field)

return field.name

end

)

if not fields then

return

end

local edit = self.jdtls:java_generate_to_string({

context = params.params,

fields = fields,

})

vim.lsp.util.apply_workspace_edit(edit, 'utf-8')

end

---@param params nvim.CodeActionParamsResponse

function Action:generate_hash_code_and_equals(params)

local status = self.jdtls:java_check_hash_code_equals_status(params.params)

if not status or not status.fields or #status.fields < 1 then

local message = string.format('The operation is not applicable to the type %s.', status.type)

notify.warn(message)

return

end

local regenerate = false

if status.existingMethods and #status.existingMethods > 0 then

local prompt = string.format(

'Methods %s already exists in the Class %s. Do you want to regenerate the implementation?',

'Regenerate',

'Cancel'

)

local choice = ui.select(prompt, { 'Regenerate', 'Cancel' })

if choice == 'Regenerate' then

regenerate = true

end

local fields = ui.multi_select(

'Select the fields to include in the hashCode() and equals() methods.',

status.fields,

function(field)

return field.name

end

)

if not fields or #fields < 1 then

return

end

local edit = self.jdtls:java_generate_hash_code_equals({

context = params.params,

fields = fields,

regenerate = regenerate,

})

vim.lsp.util.apply_workspace_edit(edit, 'utf-8')

end

---@param params nvim.CodeActionParamsResponse

function Action:generate_delegate_methods_prompt(params)

local status = self.jdtls:java_check_delegate_methods_status(params.params)

if not status or not status.delegateFields or #status.delegateFields < 1 then

notify.warn('All delegatable methods are already implemented.')

return

end

local selected_delegate_field = ui.select(

'Select target to generate delegates for.',

status.delegateFields,

function(field)

return field.field.name .. ': ' .. field.field.type

end

)

if not selected_delegate_field then

return

end

if #selected_delegate_field.delegateMethods < 1 then

notify.warn('All delegatable methods are already implemented.')

return

end

local selected_delegate_methods = ui.multi_select(

'Select methods to generate delegates for.',

selected_delegate_field.delegateMethods,

function(method)

return string.format(

'%s.%s(%s)',

selected_delegate_field.field.name,

method.name,

table.concat(method.parameters, ', ')

)

end

)

if not selected_delegate_methods or #selected_delegate_methods < 1 then

return

end

local delegate_entries = List:new(selected_delegate_methods):map(

---@param method jdtls.MethodBinding

function(method)

return {

field = selected_delegate_field.field,

delegateMethod = method,

}

end

)

local edit = self.jdtls:java_generate_delegate_methods({

context = params.params,

delegateEntries = delegate_entries,

})

vim.lsp.util.apply_workspace_edit(edit, 'utf-8')

end

---@param command lsp.Command

function Action:apply_refactoring_command(command)

local action_name = command.arguments[1] --[[@as jdtls.CodeActionCommand]]

local action_context = command.arguments[2] --[[@as lsp.CodeActionParams]]

local action_info = command.arguments[3] --[[@as lsp.LSPAny]]

self.refactor:refactor(action_name, action_context, action_info)

end

---comment

---@param is_full_compile boolean

---@return java-core.CompileWorkspaceStatus

function Action:build_workspace(is_full_compile)

return self.jdtls:java_build_workspace(is_full_compile, 0)

end

function Action:clean_workspace()

local client = lsp_utils.get_jdtls()

local data_path = lsp_utils.get_jdtls_cache_data_path(client.root_dir)

local prompt = string.format('Do you want to delete "%s"', data_path)

local choice = ui.select(prompt, { 'Yes', 'No' })

if choice ~= 'Yes' then

return

end

return vim.fn.delete(data_path, 'rf')

end

---@class java-refactor.ApplyRefactoringCommandParams

---@field bufnr number

---@field client_id number

---@field method string

---@field params lsp.CodeActionParams

---@field version number

---@param params nvim.CodeActionParamsResponse

function Action:override_methods_prompt(params)

local status = self.jdtls:list_overridable_methods(params.params)

if not status or not status.methods or #status.methods < 1 then

notify.warn('No methods to override.')

return

end

local selected_methods = ui.multi_select('Select methods to override.', status.methods, function(method)

return string.format('%s(%s)', method.name, table.concat(method.parameters, ', '))

end)

if not selected_methods or #selected_methods < 1 then

return

end

local edit = self.jdtls:add_overridable_methods(params.params, selected_methods)

vim.lsp.util.apply_workspace_edit(edit, 'utf-8')

end

---@param selections jdtls.ImportSelection[]

function Action:choose_imports(selections)

local selected_candidates = {}

for _, selection in ipairs(selections) do

local selected_candidate = ui.select_sync(

'Select methods to override.',

selection.candidates,

function(candidate, index)

return index .. ' ' .. candidate.fullyQualifiedName

end

)

table.insert(selected_candidates, selected_candidate)

end

return selected_candidates

end

return Action

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