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1 ;;!emacs
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2 ;;
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3 ;; FILE: hrmail.el
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4 ;; SUMMARY: Support for Hyperbole buttons in mail reader: Rmail.
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5 ;; USAGE: GNU Emacs Lisp Library
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6 ;; KEYWORDS: hypermedia, mail
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7 ;;
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8 ;; AUTHOR: Bob Weiner
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9 ;; ORG: Brown U.
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10 ;;
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11 ;; ORIG-DATE: 9-May-91 at 04:22:02
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12 ;; LAST-MOD: 14-Feb-97 at 11:38:57 by Bob Weiner
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13 ;;
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14 ;; This file is part of Hyperbole.
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15 ;; Available for use and distribution under the same terms as GNU Emacs.
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16 ;;
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17 ;; Copyright (C) 1991-1995, Free Software Foundation, Inc.
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18 ;; Developed with support from Motorola Inc.
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19 ;;
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20 ;; DESCRIPTION:
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21 ;;
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22 ;; Automatically configured for use in "hyperbole.el".
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23 ;; If hsite loading fails prior to initializing Hyperbole Rmail support,
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24 ;;
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24
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25 ;; {M-x Rmail-init RET}
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26 ;;
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27 ;; will do it.
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28 ;;
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29 ;; DESCRIP-END.
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30
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31 ;;; ************************************************************************
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32 ;;; Other required Elisp libraries
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33 ;;; ************************************************************************
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34
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35 (require 'hmail)
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36 (require 'hact)
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37 (load "hsmail")
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38 (require 'rmail)
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39 (load "rmailedit")
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40 (provide 'rmailedit)
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41
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42 ;;; ************************************************************************
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43 ;;; Public variables
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44 ;;; ************************************************************************
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45
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46 ;;; ************************************************************************
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47 ;;; Public functions
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48 ;;; ************************************************************************
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49
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50 (defun Rmail-init ()
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51 "Initializes Hyperbole support for Rmail mail reading."
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52 (interactive)
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53 (setq hmail:composer 'mail-mode
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54 hmail:lister 'rmail-summary-mode
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55 hmail:modifier 'rmail-edit-mode
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56 hmail:reader 'rmail-mode)
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57 (var:append 'rmail-show-message-hook '(hmail:msg-narrow))
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58 ;;
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59 ;;
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60 ;; Setup public abstract interface to Hyperbole defined mail
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61 ;; reader-specific functions used in "hmail.el".
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62 ;;
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63 (rmail:init)
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64 ;;
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65 ;; Setup private abstract interface to mail reader-specific functions
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66 ;; used in "hmail.el".
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67 ;;
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68 (fset 'rmail:get-new 'rmail-get-new-mail)
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69 (fset 'rmail:msg-forward 'rmail-forward)
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70 (fset 'rmail:summ-msg-to 'rmail-summary-goto-msg)
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71 (fset 'rmail:summ-new 'rmail-new-summary)
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72 (if (interactive-p)
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73 (message "Hyperbole RMAIL mail reader support initialized."))
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74 )
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75
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76 (defun Rmail-msg-hdrs-full (toggled)
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77 "If TOGGLED is non-nil, toggle full/hidden headers, else show full headers."
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78 (save-excursion
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79 (if (or toggled
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80 (let ((tog nil))
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81 (save-excursion
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82 (save-restriction
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83 (rmail-maybe-set-message-counters)
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84 (narrow-to-region (rmail-msgbeg rmail-current-message)
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85 (point-max))
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86 (let ((buffer-read-only nil))
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87 (goto-char (point-min))
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88 (forward-line 1)
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89 ;; Need to show full header
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90 (if (= (following-char) ?1)
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91 (setq tog t)))))
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92 tog))
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93 (progn (rmail-toggle-header)
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94 (setq toggled t)))
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95 toggled))
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96
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97 (defun Rmail-msg-narrow ()
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98 "Narrows mail reader buffer to current message.
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99 This includes Hyperbole button data."
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100 (let ((beg (rmail-msgbeg rmail-current-message))
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101 (end (rmail-msgend rmail-current-message)))
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102 (narrow-to-region beg end)))
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103
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104 (defun Rmail-msg-next () (rmail-next-undeleted-message 1))
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105
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106 (defun Rmail-msg-num ()
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107 "Returns number of Rmail message that point is within."
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108 (interactive)
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109 (let ((count 0) opoint)
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110 (save-excursion
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111 (while (and (not (eobp))
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112 (progn (setq opoint (point))
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113 (re-search-backward "^\^_" nil t)))
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114 (if (= opoint (point))
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115 (backward-char 1)
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116 (setq count (1+ count)))))
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117 count))
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118
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119 (defun Rmail-msg-prev () (rmail-previous-undeleted-message 1))
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120
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121 (defun Rmail-msg-to-p (mail-msg-id mail-file)
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122 "Sets current buffer to start of msg with MAIL-MSG-ID in MAIL-FILE.
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123 Returns t if successful, else nil."
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124 (if (not (file-readable-p mail-file))
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125 nil
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126 (let ((buf (get-file-buffer mail-file)))
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127 (cond (buf
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128 (switch-to-buffer buf)
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129 (or (eq major-mode 'rmail-mode)
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130 (rmail mail-file)))
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131 (t (rmail mail-file))))
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132 (widen)
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133 (goto-char 1)
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134 (if (re-search-forward (concat rmail:msg-hdr-prefix
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135 (regexp-quote mail-msg-id)) nil t)
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136 ;; Found matching msg
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137 (progn
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138 (setq buffer-read-only t)
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139 (rmail-show-message (Rmail-msg-num))
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140 t))))
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141
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142
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143 (defun Rmail-msg-widen ()
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144 "Widens buffer to full current message including Hyperbole button data."
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145 (let ((start (point-min))
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146 (end (point-max)))
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147 (unwind-protect
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148 (save-excursion
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149 (widen)
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150 (if (re-search-forward "^\^_" nil t)
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151 (progn (forward-char -1)
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152 (setq end (point)))))
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153 (narrow-to-region start end))))
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154
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155 (defun Rmail-to ()
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156 "Sets current buffer to a mail reader buffer."
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157 (and (eq major-mode 'rmail-summary-mode) (set-buffer rmail-buffer)))
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158
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159 (fset 'Rmail-Summ-delete 'rmail-summary-delete-forward)
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160
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161 (fset 'Rmail-Summ-expunge 'rmail-summary-expunge)
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162
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163 (fset 'Rmail-Summ-goto 'rmail-summary-goto-msg)
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164
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165 (defun Rmail-Summ-to ()
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166 "Sets current buffer to a mail listing buffer."
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167 (and (eq major-mode 'rmail-mode) (set-buffer rmail-summary-buffer)))
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168
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169 (fset 'Rmail-Summ-undelete-all 'rmail-summary-undelete-many)
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170
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171 ;;; ************************************************************************
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172 ;;; Private functions
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173 ;;; ************************************************************************
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174
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175 ;;;
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176 ;;; Overlay version of this function from "rmailedit.el" to include any
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177 ;;; hidden Hyperbole button data when computing message length.
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178 (defun rmail-cease-edit ()
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179 "Finish editing message; switch back to Rmail proper."
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180 (interactive)
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181 ;; Make sure buffer ends with a newline.
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182 (save-excursion
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183 (Rmail-msg-widen)
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184 (goto-char (point-max))
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185 (if (/= (preceding-char) ?\n)
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186 (insert "\n"))
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187 ;; Adjust the marker that points to the end of this message.
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188 (set-marker (aref rmail-message-vector (1+ rmail-current-message))
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189 (point))
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190 (hmail:msg-narrow)
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191 )
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192 (let ((old rmail-old-text))
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193 ;; Update the mode line.
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194 (set-buffer-modified-p (buffer-modified-p))
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195 (rmail-mode-1)
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196 (if (and (= (length old) (- (point-max) (point-min)))
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197 (string= old (buffer-substring (point-min) (point-max))))
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198 ()
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199 (setq old nil)
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200 (rmail-set-attribute "edited" t)
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201 (if (boundp 'rmail-summary-vector)
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202 (progn
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203 (aset rmail-summary-vector (1- rmail-current-message) nil)
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204 (save-excursion
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205 (rmail-widen-to-current-msgbeg
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206 (function (lambda ()
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207 (forward-line 2)
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208 (if (looking-at "Summary-line: ")
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209 (let ((buffer-read-only nil))
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210 (delete-region (point)
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211 (progn (forward-line 1)
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212 (point))))))))
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213 (rmail-show-message))))))
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214 (setq buffer-read-only t))
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215
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216
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217 ;;; Overlay version of this function from "rmail.el" to include any
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218 ;;; Hyperbole button data.
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219 (defun rmail-forward (resend)
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220 "Forward the current message to another user.
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221 With prefix argument, \"resend\" the message instead of forwarding it;
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222 see the documentation of `rmail-resend'."
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223 (interactive "P")
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224 (if resend
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225 (call-interactively 'rmail-resend)
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226 (let ((forward-buffer (current-buffer))
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227 (subject (concat "["
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228 (let ((from (or (mail-fetch-field "From")
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229 (mail-fetch-field ">From"))))
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230 (if from
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231 (concat (mail-strip-quoted-names from) ": ")
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232 ""))
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233 (or (mail-fetch-field "Subject") "")
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234 "]")))
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235 (save-restriction
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236 (Rmail-msg-widen)
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237 ;; Turn off the usual actions for initializing the message body
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238 ;; because we want to get only the text from the failure message.
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239 (let (mail-signature mail-setup-hook)
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240 ;; If only one window, use it for the mail buffer.
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241 ;; Otherwise, use another window for the mail buffer
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242 ;; so that the Rmail buffer remains visible
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243 ;; and sending the mail will get back to it.
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244 (if (funcall (if (one-window-p t)
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245 (function mail)
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246 (function mail-other-window))
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247 nil nil subject nil nil nil
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248 (list (list (function (lambda (buf msgnum)
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249 (save-excursion
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250 (set-buffer buf)
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251 (rmail-set-attribute
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252 "forwarded" t msgnum))))
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253 (current-buffer)
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254 rmail-current-message)))
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255 (save-excursion
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256 (goto-char (point-max))
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257 (forward-line 1)
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258 (insert-buffer forward-buffer)
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259 (hmail:msg-narrow))))))))
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260
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261 ;;; Overlay version of 'rmail-get-new-mail' from "rmail.el" to highlight
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262 ;;; Hyperbole buttons when possible.
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263 ;;;
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264 (hypb:function-overload 'rmail-get-new-mail nil
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265 '(if (fboundp 'hproperty:but-create)
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266 (progn (widen) (hproperty:but-create)
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267 (rmail-show-message))))
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268
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269 ;;; Overlay version of 'rmail-new-summary' from "rmailsum.el" to
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270 ;;; highlight Hyperbole buttons when possible.
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271 ;;;
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272 (or (fboundp 'rmail-new-summary) (load "rmailsum"))
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273 (hypb:function-overload 'rmail-new-summary nil
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274 '(if (fboundp 'hproperty:but-create)
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275 (hproperty:but-create)))
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276
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277 ;;; ************************************************************************
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278 ;;; Private variables
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279 ;;; ************************************************************************
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280
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281 (provide 'hrmail)
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